Keeping your Gradle builds in top shape Nelson Osacky

Me • Previously Android Engineer • Large projects • SoundCloud • Square • Small startups • Gradle Plugin Maintainer • Fladle - Easily Scale Instrumentation Tests on Firebase https://github.com/runningcode/fladle • Gradle Doctor - Actionable Insights for your build https://github.com/runningcode/gradle-doctor Lead Solutions Engineer

I see a lot of builds from 10 person teams to 1000+ Android, Gradle and Maven

• Optimize and understand builds • Increase build stability • Preach Developer Productivity

• Improve Gradle ecosystem • Fix issues in open source plugin affecting customers

• Meet with Google and Jetbrains to help prioritize issues impacting customers

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Android Development Feature Development Tech Debt (There are other things too)

Tech Debt Refactoring Improving builds

Slow builds are Tech Debt And it always pays off

Cost of Builds 60s waste * 50 builds / day * 50 devs 
 = 42 hours lost / day

Cost of Builds 60s waste * 50 builds / day * 50 devs 
 = 42 hours lost / day not including lost focus https://gradle.com/roi-calculator

Fast Builds Matter

Cost of Builds 60s waste * 50 builds / day * 50 devs 
 = 42 hours lost / day hire 5 new people without paying them! no recruiting https://gradle.com/roi-calculator

Slow builds are Tech Debt And it always pays off And is easy to justify working on it

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https://gradle.com/enterprise/trial/

How many have seen or used a Build Scan?

How many are Gradle Enterprise customers?

https://gradle.com/enterprise-customers/oss-projects/ Gradle Enterprise OSS Projects

Quick Demo https://ge.androidx.dev/scans

What is build caching? https://docs.gradle.org/current/userguide/build_cache.html

JavaCompile task Source Files Compiler Args Dependencies Class files any task can be made cacheable

Cache key Source Files Compiler Args Dependencies

Cache key Source Files Compiler Args Dependencies Build cache Class files

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Build Validation Scripts

Build Validation Scripts 1. Verify up-to-date checking (incremental build) 2. Verify local cacheability 3. Verify cache relocateability 4. Verify CI to CI cache relocateability 5. Verify CI to Local machine cache relocateability

Build Validation Scripts 01-validate-incremental-building.sh 02-validate-local-build-caching-same-location.sh 03-validate-local-build-caching-different-locations.sh 04-validate-remote-build-caching-ci-ci.sh 05-validate-remote-build-caching-ci-local.sh

•Interactive mode with -i ./01-validate-incremental-building.sh -i •Command line invocation Build Validation Scripts

./01-validate-incremental-building.sh 1. Disable build caching completely 2. Run the build with a typical task invocation including the 'clean' task 3. Run the build with the same task invocation but without the 'clean' task 4. Determine which tasks are still executed in the second run and why 5. Assess which of the executed tasks are worth improving 6. Fix identified tasks Step 1-3 are automated. 4-6 are manual.

./01-validate-incremental-building.sh 2. ./gradlew clean assemble --no-build-cache 3. ./gradlew assemble --no-build-cache

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/timeline? outcome=SUCCESS,FAILED&sort=longest Task inputs comparison: https://ge.solutions-team.gradle.com/c/yj6btgctdvif6/qocthanshmjdm/task-inputs Command Line Invocation ----------------------- ./01-validate-incremental-building.sh -r https://github.com/gradle/android-cache-fix-gradle-plugin -t assemble Once you have addressed the issues surfaced in build scans and pushed the changes to your Git repository, you can rerun the experiment and start over the cycle of run → measure → improve → run.

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

Tag a build // via build.gradle buildScan.tag("exp1-gradle") // via command line system property -Dscan.tag.exp1-gradle

./01-validate-incremental-building.sh exp1-gradle

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh 6296b790

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

.data/01-validate-incremental-building/20220531T194920-6296b790 ├── first-build_gradle-build-scan-quickstart │ ├── README.md │ ├── build │ │ ├── classes │ │ │ └── java │ │ │ └── main │ │ │ └── example │ │ │ └── Example.class │ │ └── libs │ │ └── gradle-build-scan-quickstart.jar │ ├── build.gradle │ ├── gradle │ │ └── wrapper │ │ ├── gradle-wrapper.jar │ │ └── gradle-wrapper.properties │ ├── gradlew │ ├── gradlew.bat │ ├── settings.gradle │ └── src │ ├── main │ │ └── java │ │ └── example │ │ └── Example.java │ └── test │ └── java │ └── example │ └── ExampleTest.java ├── second-build_gradle-build-scan-quickstart │ ├── README.md │ ├── build │ │ ├── classes │ │ │ └── java │ │ │ └── main │ │ │ └── example │ │ │ └── Example.class │ │ ├── libs > tree .data/01-validate-incremental-building/20220531T194920-6296b790

> tree .data/01-validate-incremental-building/20220531T194920-6296b790 .data/01-validate-incremental-building/20220531T194920-6296b790 ├── first-build_gradle-build-scan-quickstart │ ├── README.md │ ├── build │ │ ├── classes │ │ │ └── java │ │ │ └── main │ │ │ └── example │ │ │ └── Example.class │ │ └── libs │ │ └── gradle-build-scan-quickstart.jar │ ├── build.gradle │ ├── gradle │ │ └── wrapper │ │ ├── gradle-wrapper.jar │ │ └── gradle-wrapper.properties │ ├── gradlew │ ├── gradlew.bat │ ├── settings.gradle │ └── src │ ├── main │ │ └── java │ │ └── example │ │ └── Example.java │ └── test │ └── java │ └── example │ └── ExampleTest.java ├── second-build_gradle-build-scan-quickstart │ ├── README.md │ ├── build │ │ ├── classes │ │ │ └── java │ │ │ └── main │ │ │ └── example │ │ │ └── Example.class │ │ ├── libs

> tree .data/01-validate-incremental-building/20220531T194920-6296b790 .data/01-validate-incremental-building/20220531T194920-6296b790 ├── first-build_gradle-build-scan-quickstart │ ├── README.md │ ├── build │ │ ├── classes │ │ │ └── java │ │ │ └── main │ │ │ └── example │ │ │ └── Example.class │ │ └── libs │ │ └── gradle-build-scan-quickstart.jar │ ├── build.gradle │ ├── gradle │ │ └── wrapper │ │ ├── gradle-wrapper.jar │ │ └── gradle-wrapper.properties │ ├── gradlew │ ├── gradlew.bat │ ├── settings.gradle │ └── src │ ├── main │ │ └── java │ │ └── example │ │ └── Example.java │ └── test │ └── java │ └── example │ └── ExampleTest.java ├── second-build_gradle-build-scan-quickstart │ ├── README.md │ ├── build │ │ ├── classes │ │ │ └── java │ │ │ └── main │ │ │ └── example │ │ │ └── Example.class │ │ ├── libs

> tree .data/01-validate-incremental-building/20220531T194920-6296b790 .data/01-validate-incremental-building/20220531T194920-6296b790 ├── first-build_gradle-build-scan-quickstart │ ├── README.md │ ├── build │ │ ├── classes │ │ │ └── java │ │ │ └── main │ │ │ └── example │ │ │ └── Example.class │ │ └── libs │ │ └── gradle-build-scan-quickstart.jar │ ├── build.gradle │ ├── gradle │ │ └── wrapper │ │ ├── gradle-wrapper.jar │ │ └── gradle-wrapper.properties │ ├── gradlew │ ├── gradlew.bat │ ├── settings.gradle │ └── src │ ├── main │ │ └── java │ │ └── example │ │ └── Example.java │ └── test │ └── java │ └── example │ └── ExampleTest.java ├── second-build_gradle-build-scan-quickstart │ ├── README.md │ ├── build │ │ ├── classes │ │ │ └── java │ │ │ └── main │ │ │ └── example │ │ │ └── Example.class │ │ ├── libs

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/timeline? outcome=SUCCESS,FAILED&sort=longest Task inputs comparison: https://ge.solutions-team.gradle.com/c/yj6btgctdvif6/qocthanshmjdm/task-inputs Command Line Invocation ----------------------- ./01-validate-incremental-building.sh -r https://github.com/gradle/android-cache-fix-gradle-plugin -t assemble Once you have addressed the issues surfaced in build scans and pushed the changes to your Git repository, you can rerun the experiment and start over the cycle of run → measure → improve → run.

./01-validate-incremental-building.sh Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ timeline?outcome=SUCCESS,FAILED&sort=longest Task inputs comparison: https://ge.solutions-team.gradle.com/c/yj6btgctdvif6/ qocthanshmjdm/task-inputs

./01-validate-incremental-building.sh Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ timeline?outcome=SUCCESS,FAILED&sort=longest Task inputs comparison: https://ge.solutions-team.gradle.com/c/yj6btgctdvif6/ qocthanshmjdm/task-inputs

Task execution overview

./01-validate-incremental-building.sh Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ timeline?outcome=SUCCESS,FAILED&sort=longest Task inputs comparison: https://ge.solutions-team.gradle.com/c/yj6btgctdvif6/ qocthanshmjdm/task-inputs

./01-validate-incremental-building.sh Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ timeline?outcome=SUCCESS,FAILED&sort=longest Task inputs comparison: https://ge.solutions-team.gradle.com/c/yj6btgctdvif6/ qocthanshmjdm/task-inputs

Executed tasks timeline

Executed tasks timeline https://ge.solutions-team.gradle.com/s/lmjpnnl5nndpg/timeline?outcome=SUCCESS,FAILED&sort=longest

Executed tasks timeline https://ge.solutions-team.gradle.com/s/lmjpnnl5nndpg/timeline?outcome=SUCCESS,FAILED&sort=longest

./01-validate-incremental-building.sh Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ timeline?outcome=SUCCESS,FAILED&sort=longest Task inputs comparison: https://ge.solutions-team.gradle.com/c/yj6btgctdvif6/ qocthanshmjdm/task-inputs

./01-validate-incremental-building.sh Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ timeline?outcome=SUCCESS,FAILED&sort=longest Task inputs comparison: https://ge.solutions-team.gradle.com/c/yj6btgctdvif6/ qocthanshmjdm/task-inputs

./01-validate-incremental-building.sh https://ge.solutions-team.gradle.com/c/qocthanshmjdm/yj6btgctdvif6/task-inputs

./01-validate-incremental-building.sh https://ge.solutions-team.gradle.com/c/zj7wudbdhj7ho/lmjpnnl5nndpg/task-inputs

Task input comparison

./01-validate-incremental-building.sh Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ timeline?outcome=SUCCESS,FAILED&sort=longest Task inputs comparison: https://ge.solutions-team.gradle.com/c/yj6btgctdvif6/ qocthanshmjdm/task-inputs

./01-validate-incremental-building.sh Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/ timeline?outcome=SUCCESS,FAILED&sort=longest Task inputs comparison: https://ge.solutions-team.gradle.com/c/yj6btgctdvif6/ qocthanshmjdm/task-inputs

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/timeline? outcome=SUCCESS,FAILED&sort=longest Task inputs comparison: https://ge.solutions-team.gradle.com/c/yj6btgctdvif6/qocthanshmjdm/task-inputs Command Line Invocation ----------------------- ./01-validate-incremental-building.sh -r https://github.com/gradle/android-cache-fix-gradle-plugin -t assemble Once you have addressed the issues surfaced in build scans and pushed the changes to your Git repository, you can rerun the experiment and start over the cycle of run → measure → improve → run.

./01-validate-incremental-building.sh Command Line Invocation ----------------------- ./01-validate-incremental-building.sh -r https://github.com/gradle/android-cache-fix-gradle-plugin -t assemble Once you have addressed the issues surfaced in build scans and pushed the changes to your Git repository, you can rerun the experiment and start over the cycle of run → measure → improve → run.

./01-validate-incremental-building.sh Summary ------- Project: android-cache-fix-gradle-plugin Git repo: git@github.com:gradle/android-cache-fix-gradle-plugin Git branch: main Git commit id: 88f52ce8c3b44a0563e21682866bc3f704107a52 Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 01 Validate incremental building Experiment id: exp1-gradle Experiment run id: 6296b790 Experiment artifact dir: .data/01-validate-incremental-building/20220531T194920-6296b790 Build scan first build: https://ge.solutions-team.gradle.com/s/yj6btgctdvif6 Build scan second build: https://ge.solutions-team.gradle.com/s/qocthanshmjdm Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qocthanshmjdm/timeline? outcome=SUCCESS,FAILED&sort=longest Task inputs comparison: https://ge.solutions-team.gradle.com/c/yj6btgctdvif6/qocthanshmjdm/task-inputs Command Line Invocation ----------------------- ./01-validate-incremental-building.sh -r https://github.com/gradle/android-cache-fix-gradle-plugin -t assemble Once you have addressed the issues surfaced in build scans and pushed the changes to your Git repository, you can rerun the experiment and start over the cycle of run → measure → improve → run.

•Interactive mode with -i ./01-validate-incremental-building.sh -i •Command line invocation ./01-validate-incremental-building.sh -r https:// github.com/gradle/android-cache-fix-gradle-plugin -t assemble Build Validation Scripts

./02-validate-local-build-caching-same-location.sh 1. Enable only local build caching and use an empty local build cache 2. Run the build with a typical task invocation including the ‘clean’ task 3. Run the build with the same task invocation including the ‘clean’ task 4. Determine which cacheable tasks are still executed in the second run and why 5. Assess which of the executed, cacheable tasks are worth improving 6. Fix identified tasks Step 1-3 are automated. 4-6 are manual.

./02-validate-local-build-caching-same-location.sh 2. ./gradlew clean assemble --build-cache 3. ./gradlew clean assemble --build-cache

./02-validate-local-build-caching-same-location.sh Summary ------- Project: gradle-build-scan-quickstart Git repo: git@github.com:gradle/gradle-build-scan-quickstart.git Git branch: main Git commit id: 3157cfc52db2c1ac960dcb2c24c4cbe3603c92be Project dir: Gradle tasks: assemble Gradle arguments: Experiment: 02 Validate local build caching - same project location Experiment id: exp2-gradle Experiment run id: 6298cd0f Experiment artifact dir: .data/02-validate-local-build-caching-same-location/20220602T074535-6298cd0f Build scan first build: https://ge.solutions-team.gradle.com/s/zoloexid3t4ok Build scan second build: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/timeline?outcome=SUCCESS,FAILED&sort=longest Executed cacheable tasks: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/timeline? cacheability=cacheable,overlapping_outputs,validation_failure&outcome=SUCCESS,FAILED&sort=longest Executed non-cacheable tasks: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/timeline?cacheability=any_non- cacheable&outcome=SUCCESS,FAILED&sort=longest Build caching statistics: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/performance/build-cache Task inputs comparison: https://ge.solutions-team.gradle.com/c/zoloexid3t4ok/a6uhbkyvlexug/task-inputs?cacheability=cacheable Command Line Invocation ----------------------- ./02-validate-local-build-caching-same-location.sh -r git@github.com:gradle/gradle-build-scan-quickstart.git -t assemble -s https:// ge.solutions-team.gradle.com

./02-validate-local-build-caching-same-location.sh Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/timeline?outcome=SUCCESS,FAILED&sort=longest Executed cacheable tasks: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/timeline? cacheability=cacheable,overlapping_outputs,validation_failure&outcome=SUCCESS,FAILED&sort=longest Executed non-cacheable tasks: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/timeline?cacheability=any_non- cacheable&outcome=SUCCESS,FAILED&sort=longest Build caching statistics: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/performance/build-cache Task inputs comparison: https://ge.solutions-team.gradle.com/c/zoloexid3t4ok/a6uhbkyvlexug/task-inputs?cacheability=cacheable

./02-validate-local-build-caching-same-location.sh Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/timeline?outcome=SUCCESS,FAILED&sort=longest Executed cacheable tasks: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/timeline? cacheability=cacheable,overlapping_outputs,validation_failure&outcome=SUCCESS,FAILED&sort=longest Executed non-cacheable tasks: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/timeline?cacheability=any_non- cacheable&outcome=SUCCESS,FAILED&sort=longest Build caching statistics: https://ge.solutions-team.gradle.com/s/a6uhbkyvlexug/performance/build-cache Task inputs comparison: https://ge.solutions-team.gradle.com/c/zoloexid3t4ok/a6uhbkyvlexug/task-inputs?cacheability=cacheable

1. Enable only local build caching and use an empty local build cache 2. Run the build with a typical task invocation including the ‘clean’ task 3. Run the build from a different location with the same task invocation including the ‘clean’ task 4. Determine which cacheable tasks are still executed in the second run and why 5. Assess which of the executed, cacheable tasks are worth improving 6. Fix identified tasks ./03-validate-local-build-caching-different-locations.sh Step 1-3 are automated. 4-6 are manual.

1. Enable only remote build caching and use an empty remote build cache 2. On a given CI agent, run a typical CI configuration from a fresh checkout 3. On another CI agent, run the same CI configuration with the same commit id from a fresh checkout 4. Determine which cacheable tasks are still executed in the second run and why 5. Assess which of the executed, cacheable tasks are worth improving 6. Fix identified tasks ./04-validate-remote-build-caching-ci-ci.sh All steps are manual

1. Enable only remote build caching and use an empty remote build cache 2. On a given CI agent, run a typical CI configuration from a fresh checkout 3. On a developer machine, run the build with the same task invocation including the ‘clean’ task with the same commit id 4. Determine which cacheable tasks are still executed in the second run and why 5. Assess which of the executed, cacheable tasks are worth improving 6. Fix identified tasks ./05-validate-remote-build-caching-ci-local.sh All steps are manual except step 3

Automate it

Github Action to Verify Build

https://github.com/gradle/gradle-enterprise-build-validation-scripts/tree/main/.github/actions/gradle Github Action to Verify Build

steps: # Download the latest version of the build validation scripts - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/download@v1.0.2 with: token: ${{ secrets.GITHUB_TOKEN }} Github Action to Verify Build

steps: # Download the latest version of the build validation scripts - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/download@v1.0.2 with: token: ${{ secrets.GITHUB_TOKEN }} # Run experiment 1 - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/experiment-1@v1.0.2 with: gitRepo: gitBranch: tasks: Github Action to Verify Build

steps: # Download the latest version of the build validation scripts - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/download@v1.0.2 with: token: ${{ secrets.GITHUB_TOKEN }} # Run experiment 1 - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/experiment-1@v1.0.2 with: gitRepo: gitBranch: tasks: # Run experiment 2 - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/experiment-2@v1.0.2 with: gitRepo: gitBranch: tasks: ... Github Action to Verify Build

steps: # Download the latest version of the build validation scripts - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/download@v1.0.2 with: token: ${{ secrets.GITHUB_TOKEN }} # Run experiment 1 - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/experiment-1@v1.0.2 with: gitRepo: gitBranch: tasks: # Run experiment 2 - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/experiment-2@v1.0.2 with: gitRepo: gitBranch: tasks: # Run experiment 3 - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/experiment-3@v1.0.2 with: gitRepo: gitBranch: tasks: ... Github Action to Verify Build

steps: # Download the latest version of the build validation scripts - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/download@v1.0.2 with: token: ${{ secrets.GITHUB_TOKEN }} # Run experiment 1 - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/experiment-1@v1.0.2 with: gitRepo: gitBranch: tasks: # Run experiment 2 - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/experiment-2@v1.0.2 with: gitRepo: gitBranch: tasks: # Run experiment 3 - uses: gradle/gradle-enterprise-build-validation-scripts/.github/actions/gradle/experiment-3@v1.0.2 with: gitRepo: gitBranch: tasks: ... Github Action to Verify Build

https://github.com/gradle/gradle-enterprise-build-validation-scripts/tree/main/.github/actions/gradle Github Action to Verify Build Run them once a week!

https://github.com/gradle/gradle-enterprise-oss-projects/actions/runs/2604518317 AndroidX Execution

Summary ------- Project: biometric-playground Git repo: https://github.com/gradle/androidx Git branch: androidx-main Git commit id: e1f0de767e6002ead5488f35152fe4a97036d1e5 Project dir: biometric Gradle tasks: buildOnServer zipTestConfigsWithApks test Gradle arguments: -x ktlint Experiment: 03 Validate local build caching - different project locations Experiment id: exp3-gradle Experiment run id: 62c15afb Experiment artifact dir: .data/03-validate-local-build-caching-different-locations/20220703T090147-62c15afb Build scan first build: https://ge.solutions-team.gradle.com/s/dh6hbujtzul6s Build scan second build: https://ge.solutions-team.gradle.com/s/qlijsh5r36vqa Investigation Quick Links ------------------------- Task execution overview: https://ge.solutions-team.gradle.com/s/qlijsh5r36vqa/performance/execution Executed tasks timeline: https://ge.solutions-team.gradle.com/s/qlijsh5r36vqa/timeline? outcome=SUCCESS,FAILED&sort=longest Executed cacheable tasks: https://ge.solutions-team.gradle.com/s/qlijsh5r36vqa/timeline? cacheability=cacheable,overlapping_outputs,validation_failure&outcome=SUCCESS,FAILED&sort=longest Executed non-cacheable tasks: https://ge.solutions-team.gradle.com/s/qlijsh5r36vqa/timeline?cacheability=any_non- cacheable&outcome=SUCCESS,FAILED&sort=longest Build caching statistics: https://ge.solutions-team.gradle.com/s/qlijsh5r36vqa/performance/build-cache Task inputs comparison: https://ge.solutions-team.gradle.com/c/dh6hbujtzul6s/qlijsh5r36vqa/task-inputs? cacheability=cacheable https://github.com/gradle/gradle-enterprise-oss-projects/runs/7167693674?check_suite_focus=true#step:9:3214

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Old Export API https://docs.gradle.com/enterprise/export-api/

How many are are familiar with the Export API?

Old Export API • SSE based • Real time streaming • JSON events • No event model • Clunky

Old Export API https://«gradle-enterprise-host»/build-export/v2/builds/since/1466640000000

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Old Export API https://«gradle-enterprise-host»/build-export/v2/build/gkoprlkauv35q/events

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New Gradle Enterprise API https://docs.gradle.com/enterprise/api-manual/

Gradle Enterprise API • REST style API • JSON • OpenAPI - allows model and client generation • Build API • Build Cache Node API • Will replace export API - missing raw build events

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Use cases • Find projects with longest build times • Rank teammates by slowest average build time • Find builds with remote caching errors • Find slowest tasks on average • Find longest non-cacheable tasks in all projects

How to? • Swagger generates models and client for you

plugins { kotlin("jvm") version "1.7.0" id("org.openapi.generator") version "6.0.0" } val apiSpecificationFile = resources.text.fromUri( "https://docs.gradle.com/enterprise/api-manual/ref/gradle-enterprise-2022.2.4- api.yaml" ).asFile() val outputDirName = "${buildDir}/generated/gradle_enterprise_api" openApiGenerate { generatorName.set("kotlin") inputSpec.set(apiSpecificationFile.absolutePath) outputDir.set(outputDirName) modelPackage.set("com.gradle.enterprise.api.model") apiPackage.set("com.gradle.enterprise.api") invokerPackage.set("com.gradle.enterprise.api.client") configOptions.set(mapOf( "library" to "jvm-retrofit2", "useCoroutines" to "true", )) } build.gradle.kts

plugins { kotlin("jvm") version "1.7.0" id("org.openapi.generator") version "6.0.0" } val apiSpecificationFile = resources.text.fromUri( "https://docs.gradle.com/enterprise/api-manual/ref/gradle-enterprise-2022.2.4- api.yaml" ).asFile() val outputDirName = "${buildDir}/generated/gradle_enterprise_api" openApiGenerate { generatorName.set("kotlin") inputSpec.set(apiSpecificationFile.absolutePath) outputDir.set(outputDirName) modelPackage.set("com.gradle.enterprise.api.model") apiPackage.set("com.gradle.enterprise.api") invokerPackage.set("com.gradle.enterprise.api.client") configOptions.set(mapOf( "library" to "jvm-retrofit2", "useCoroutines" to "true", )) } build.gradle.kts

plugins { kotlin("jvm") version "1.7.0" id("org.openapi.generator") version "6.0.0" } val apiSpecificationFile = resources.text.fromUri( "https://docs.gradle.com/enterprise/api-manual/ref/gradle-enterprise-2022.2.4- api.yaml" ).asFile() val outputDirName = "${buildDir}/generated/gradle_enterprise_api" openApiGenerate { generatorName.set("kotlin") inputSpec.set(apiSpecificationFile.absolutePath) outputDir.set(outputDirName) modelPackage.set("com.gradle.enterprise.api.model") apiPackage.set("com.gradle.enterprise.api") invokerPackage.set("com.gradle.enterprise.api.client") configOptions.set(mapOf( "library" to "jvm-retrofit2", "useCoroutines" to "true", )) } build.gradle.kts

plugins { kotlin("jvm") version "1.7.0" id("org.openapi.generator") version "6.0.0" } val apiSpecificationFile = resources.text.fromUri( "https://docs.gradle.com/enterprise/api-manual/ref/gradle-enterprise-2022.2.4- api.yaml" ).asFile() val outputDirName = "${buildDir}/generated/gradle_enterprise_api" openApiGenerate { generatorName.set("kotlin") inputSpec.set(apiSpecificationFile.absolutePath) outputDir.set(outputDirName) modelPackage.set("com.gradle.enterprise.api.model") apiPackage.set("com.gradle.enterprise.api") invokerPackage.set("com.gradle.enterprise.api.client") configOptions.set(mapOf( "library" to "jvm-retrofit2", "useCoroutines" to "true", )) } build.gradle.kts

plugins { kotlin("jvm") version "1.7.0" id("org.openapi.generator") version "6.0.0" } val apiSpecificationFile = resources.text.fromUri( "https://docs.gradle.com/enterprise/api-manual/ref/gradle-enterprise-2022.2.4- api.yaml" ).asFile() val outputDirName = "${buildDir}/generated/gradle_enterprise_api" openApiGenerate { generatorName.set("kotlin") inputSpec.set(apiSpecificationFile.absolutePath) outputDir.set(outputDirName) modelPackage.set("com.gradle.enterprise.api.model") apiPackage.set("com.gradle.enterprise.api") invokerPackage.set("com.gradle.enterprise.api.client") configOptions.set(mapOf( "library" to "jvm-retrofit2", "useCoroutines" to "true", )) } build.gradle.kts

plugins { kotlin("jvm") version "1.7.0" id("org.openapi.generator") version "6.0.0" } val apiSpecificationFile = resources.text.fromUri( "https://docs.gradle.com/enterprise/api-manual/ref/gradle-enterprise-2022.2.4- api.yaml" ).asFile() val outputDirName = "${buildDir}/generated/gradle_enterprise_api" openApiGenerate { generatorName.set("kotlin") inputSpec.set(apiSpecificationFile.absolutePath) outputDir.set(outputDirName) modelPackage.set("com.gradle.enterprise.api.model") apiPackage.set("com.gradle.enterprise.api") invokerPackage.set("com.gradle.enterprise.api.client") configOptions.set(mapOf( "library" to "jvm-retrofit2", "useCoroutines" to "true", )) } build.gradle.kts

plugins { kotlin("jvm") version "1.7.0" id("org.openapi.generator") version "6.0.0" } val apiSpecificationFile = resources.text.fromUri( "https://docs.gradle.com/enterprise/api-manual/ref/gradle-enterprise-2022.2.4- api.yaml" ).asFile() val outputDirName = "${buildDir}/generated/gradle_enterprise_api" openApiGenerate { generatorName.set("kotlin") inputSpec.set(apiSpecificationFile.absolutePath) outputDir.set(outputDirName) modelPackage.set("com.gradle.enterprise.api.model") apiPackage.set("com.gradle.enterprise.api") invokerPackage.set("com.gradle.enterprise.api.client") configOptions.set(mapOf( "library" to "jvm-retrofit2", "useCoroutines" to "true", )) } build.gradle.kts

plugins { kotlin("jvm") version "1.7.0" id("org.openapi.generator") version "6.0.0" } val apiSpecificationFile = resources.text.fromUri( "https://docs.gradle.com/enterprise/api-manual/ref/gradle-enterprise-2022.2.4- api.yaml" ).asFile() val outputDirName = "${buildDir}/generated/gradle_enterprise_api" openApiGenerate { generatorName.set("kotlin") inputSpec.set(apiSpecificationFile.absolutePath) outputDir.set(outputDirName) modelPackage.set("com.gradle.enterprise.api.model") apiPackage.set("com.gradle.enterprise.api") invokerPackage.set("com.gradle.enterprise.api.client") configOptions.set(mapOf( "library" to "jvm-retrofit2", "useCoroutines" to "true", )) } build.gradle.kts

plugins { kotlin("jvm") version "1.7.0" id("org.openapi.generator") version "6.0.0" } val apiSpecificationFile = resources.text.fromUri( "https://docs.gradle.com/enterprise/api-manual/ref/gradle-enterprise-2022.2.4- api.yaml" ).asFile() val outputDirName = "${buildDir}/generated/gradle_enterprise_api" openApiGenerate { generatorName.set("kotlin") inputSpec.set(apiSpecificationFile.absolutePath) outputDir.set(outputDirName) modelPackage.set("com.gradle.enterprise.api.model") apiPackage.set("com.gradle.enterprise.api") invokerPackage.set("com.gradle.enterprise.api.client") configOptions.set(mapOf( "library" to "jvm-retrofit2", "useCoroutines" to "true", )) }

plugins { kotlin("jvm") version "1.7.0" id("org.openapi.generator") version "6.0.0" } val apiSpecificationFile = resources.text.fromUri( "https://docs.gradle.com/enterprise/api-manual/ref/gradle-enterprise-2022.2.4- api.yaml" ).asFile() val outputDirName = "${buildDir}/generated/gradle_enterprise_api" openApiGenerate { generatorName.set("kotlin") inputSpec.set(apiSpecificationFile.absolutePath) outputDir.set(outputDirName) modelPackage.set("com.gradle.enterprise.api.model") apiPackage.set("com.gradle.enterprise.api") invokerPackage.set("com.gradle.enterprise.api.client") configOptions.set(mapOf( "library" to "jvm-retrofit2", "useCoroutines" to "true", )) }

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fun main(args: Array) = runBlocking { val apiClient = ApiClient( baseUrl = "https://ge.solutions-team.gradle.com", authName = "GradleEnterpriseAccessKey", bearerToken = "my-secret-token" ) val buildApi = apiClient.createService(BuildsApi::class.java) val query = BuildsQuery(since = oneHourAgo) val builds = buildApi.getBuilds(query) builds.forEach { build -> println(build) } } Main.kt

fun main(args: Array) = runBlocking { val apiClient = ApiClient( baseUrl = "https://ge.solutions-team.gradle.com", authName = "GradleEnterpriseAccessKey", bearerToken = "my-secret-token" ) val buildApi = apiClient.createService(BuildsApi::class.java) val query = BuildsQuery(since = oneHourAgo) val builds = buildApi.getBuilds(query) builds.forEach { build -> println(build) } } Main.kt

fun main(args: Array) = runBlocking { val apiClient = ApiClient( baseUrl = "https://ge.solutions-team.gradle.com", authName = "GradleEnterpriseAccessKey", bearerToken = "my-secret-token" ) val buildApi = apiClient.createService(BuildsApi::class.java) val query = BuildsQuery(since = oneHourAgo) val builds = buildApi.getBuilds(query) builds.forEach { build -> println(build) } } Main.kt

fun main(args: Array) = runBlocking { val apiClient = ApiClient( baseUrl = "https://ge.solutions-team.gradle.com", authName = "GradleEnterpriseAccessKey", bearerToken = "my-secret-token" ) val buildApi = apiClient.createService(BuildsApi::class.java) val query = BuildsQuery(since = oneHourAgo) val builds = buildApi.getBuilds(query) builds.forEach { build -> println(build) } } Main.kt

fun main(args: Array) = runBlocking { val apiClient = ApiClient( baseUrl = "https://ge.solutions-team.gradle.com", authName = "GradleEnterpriseAccessKey", bearerToken = "my-secret-token" ) val buildApi = apiClient.createService(BuildsApi::class.java) val query = BuildsQuery(since = oneHourAgo) val builds = buildApi.getBuilds(query) builds.forEach { build -> println(build) } } Main.kt

fun main(args: Array) = runBlocking { val apiClient = ApiClient( baseUrl = "https://ge.solutions-team.gradle.com", authName = "GradleEnterpriseAccessKey", bearerToken = "my-secret-token" ) val buildApi = apiClient.createService(BuildsApi::class.java) val query = BuildsQuery(since = oneHourAgo) val builds = buildApi.getBuilds(query) builds.forEach { build -> println(build) } } Main.kt

fun main(args: Array) = runBlocking { val apiClient = ApiClient( baseUrl = "https://ge.solutions-team.gradle.com", authName = "GradleEnterpriseAccessKey", bearerToken = "my-secret-token" ) val buildApi = apiClient.createService(BuildsApi::class.java) val query = BuildsQuery(since = oneHourAgo) val builds = buildApi.getBuilds(query) builds.forEach { build -> println(build) } } Main.kt

Build(id=wsj4fsafsadte, availableAt=1654106260326, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=qsj4euf5g3dff, availableAt=1654106224428, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=dsjaadff5g3te, availableAt=1654101266539, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=yweroijiwerjr, availableAt=1654109460322, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=wsj4fsafsadte, availableAt=1654106260326, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=qsj4euf5g3dff, availableAt=1654106224428, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=dsjaadff5g3te, availableAt=1654101266539, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=yweroijiwerjr, availableAt=1654109460322, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=qwerwerwerwer, availableAt=1654106260326, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=qsj4euf5g3dff, availableAt=1654106224428, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=dsjaadff5g3te, availableAt=1654101266539, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=yweroijiwerjr, availableAt=1654109460322, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=qweorijweroiw, availableAt=1654106260326, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=qsj4euf5g3dff, availableAt=1654106224428, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=dsjaadff5g3te, availableAt=1654101266539, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=yweroijiwerjr, availableAt=1654109460322, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=wsj4fsafsadte, availableAt=1654106260326, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=qsj4euf5g3dff, availableAt=1654106224428, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=dsjaadff5g3te, availableAt=1654101266539, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) Build(id=qweroijwerijr, availableAt=1654109324464, buildToolType=gradle, buildToolVersion=7.4.2, buildAgentVersion=3.10.1) builds.forEach { build -> println(build) }

buildApi.getBuilds(query) buildApi.getGradleAttributes(build.id, null) buildApi.getGradleBuildCachePerformance(build.id, null)

buildApi.getGradleAttributes(build.id, null) { • "id": "9r4d13f0r3v3r", • "buildStartTime": 1637316480, • "buildDuration": 5000, • "gradleVersion": "7.3", • "pluginVersion": "3.7.2", • "rootProjectName": "example-project", • "requestedTasks": [ • "clean", • "build" • ], • "hasFailed": false, • "tags": [ • "CI", • "feature-branch" • ], • "values": [ • {}, • {} • ], • "links": [ • {}, • {} • ], • "gradleEnterpriseSettings": { • "backgroundPublicationEnabled": true, • "buildOutputCapturingEnabled": true, • "taskInputsFileCapturingEnabled": true, • "testOutputCapturingEnabled": true • }, • "buildOptions": { • "buildCacheEnabled": true, • "configurationCacheEnabled": true, • "configurationOnDemandEnabled": true, https://docs.gradle.com/enterprise/api-manual/ref/2022.2.html#operation/GetGradleAttributes

buildApi.getBuilds(query) buildApi.getGradleAttributes(build.id, null) buildApi.getGradleBuildCachePerformance(build.id, null)

buildApi.getGradleBuildCachePerformance(build.id, null) { • "id": "9r4d13f0r3v3r", • "buildTime": 5000, • "effectiveTaskExecutionTime": 4000, • "serialTaskExecutionTime": 8000, • "serializationFactor": 2, • "taskExecution": [ • {}, • {} • ], • "taskFingerprintingSummary": { • "count": 1, • "serialDuration": 8 • }, • "avoidanceSavingsSummary": { • "total": 10000, • "ratio": 0.55556, • "upToDate": 0, • "localBuildCache": 6000, • "remoteBuildCache": 4000 • }, • "buildCaches": { • "local": {}, • "remote": {}, • "overhead": {} • } } https://docs.gradle.com/enterprise/api-manual/ref/2022.2.html#operation/GetGradleBuildCacheP

Project with slowest average build time

builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.rootProjectName } .map { (projectName, projectBuilds) -> projectName to projectBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Project ${pair.first} has average build time of ${seconds}s") } Project with slowest average build time

builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.rootProjectName } .map { (projectName, projectBuilds) -> projectName to projectBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Project ${pair.first} has average build time of ${seconds}s") } Project with slowest average build time

builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.rootProjectName } .map { (projectName, projectBuilds) -> projectName to projectBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Project ${pair.first} has average build time of ${seconds}s") } Project with slowest average build time

builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.rootProjectName } .map { (projectName, projectBuilds) -> projectName to projectBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Project ${pair.first} has average build time of ${seconds}s") } Project with slowest average build time

builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.rootProjectName } .map { (projectName, projectBuilds) -> projectName to projectBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Project ${pair.first} has average build time of ${seconds}s") } Project with slowest average build time

builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.rootProjectName } .map { (projectName, projectBuilds) -> projectName to projectBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Project ${pair.first} has average build time of ${seconds}s") } Project with slowest average build time

Project with slowest average build time builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.rootProjectName } .map { (projectName, projectBuilds) -> projectName to projectBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Project ${pair.first} has average build time of ${seconds}s") }

Project with slowest average build time .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Project ${pair.first} has average build time of ${seconds}s") } Project customer-app has average build time of 184s Project internal-app has average build time of 55s Project time-lib has average build time of 20s

User with slowest average build time

User with slowest average build time builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.environment.username } .map { (username, userBuilds) -> username to userBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Username: ${pair.first}, average build time is ${seconds}s.") }

User with slowest average build time builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.environment.username } .map { (username, userBuilds) -> username to userBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Username: ${pair.first}, average build time is ${seconds}s.") }

User with slowest average build time builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.environment.username } .map { (username, userBuilds) -> username to userBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Username: ${pair.first}, average build time is ${seconds}s.") }

User with slowest average build time builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.environment.username } .map { (username, userBuilds) -> username to userBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Username: ${pair.first}, average build time is ${seconds}s.") }

User with slowest average build time builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.environment.username } .map { (username, userBuilds) -> username to userBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Username: ${pair.first}, average build time is ${seconds}s.") }

User with slowest average build time builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.environment.username } .map { (username, userBuilds) -> username to userBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Username: ${pair.first}, average build time is ${seconds}s.") }

User with slowest average build time builds.map { build -> buildApi.getGradleAttributes(build.id, null) } .groupBy { it.environment.username } .map { (username, userBuilds) -> username to userBuilds.map { it.buildDuration }.average() } .sortedByDescending { pair -> pair.second } .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Username: ${pair.first}, average build time is ${seconds}s.") }

User with slowest average build time .forEach { pair -> val seconds = TimeUnit.MILLISECONDS.toSeconds(pair.second.toLong()) println("Username: ${pair.first}, average build time is ${seconds}s.") } Username: sorin, average build time is 233s Username: daz, average build time is 122s Username: gary, average build time is 33s Username: alexis, average build time is 30s Username: jerome, average build time is 29s Username: clay, average build time is 20s Username: etienne, average build time is 20s

Tasks with highest negative avoidance savings

Tasks with highest negative avoidance savings builds.map { build -> buildApi.getGradleBuildCachePerformance(build.id, null) } .flatMap { it.taskExecution.filter { (it.avoidanceSavings ?: 0) < 0 } } .groupBy { it.taskPath } .map { (taskPath, taskExecutions) -> taskPath to taskExecutions.map { it.avoidanceSavings!! }.average() } .sortedByDescending { pair -> pair.second } .forEach { (taskPath, averageAvoidanceSavings) -> println("Task $taskPath has average avoidance savings $averageAvoidanceSavings") }

Tasks with highest negative avoidance savings builds.map { build -> buildApi.getGradleBuildCachePerformance(build.id, null) } .flatMap { it.taskExecution.filter { (it.avoidanceSavings ?: 0) < 0 } } .groupBy { it.taskPath } .map { (taskPath, taskExecutions) -> taskPath to taskExecutions.map { it.avoidanceSavings!! }.average() } .sortedByDescending { pair -> pair.second } .forEach { (taskPath, averageAvoidanceSavings) -> println("Task $taskPath has average avoidance savings $averageAvoidanceSavings") }

Tasks with highest negative avoidance savings builds.map { build -> buildApi.getGradleBuildCachePerformance(build.id, null) } .flatMap { it.taskExecution.filter { (it.avoidanceSavings ?: 0) < 0 } } .groupBy { it.taskPath } .map { (taskPath, taskExecutions) -> taskPath to taskExecutions.map { it.avoidanceSavings!! }.average() } .sortedByDescending { pair -> pair.second } .forEach { (taskPath, averageAvoidanceSavings) -> println("Task $taskPath has average avoidance savings $averageAvoidanceSavings") }

Tasks with highest negative avoidance savings builds.map { build -> buildApi.getGradleBuildCachePerformance(build.id, null) } .flatMap { it.taskExecution.filter { (it.avoidanceSavings ?: 0) < 0 } } .groupBy { it.taskPath } .map { (taskPath, taskExecutions) -> taskPath to taskExecutions.map { it.avoidanceSavings!! }.average() } .sortedByDescending { pair -> pair.second } .forEach { (taskPath, averageAvoidanceSavings) -> println("Task $taskPath has average avoidance savings $averageAvoidanceSavings") }

Tasks with highest negative avoidance savings builds.map { build -> buildApi.getGradleBuildCachePerformance(build.id, null) } .flatMap { it.taskExecution.filter { (it.avoidanceSavings ?: 0) < 0 } } .groupBy { it.taskPath } .map { (taskPath, taskExecutions) -> taskPath to taskExecutions.map { it.avoidanceSavings!! }.average() } .sortedByDescending { pair -> pair.second } .forEach { (taskPath, averageAvoidanceSavings) -> println("Task $taskPath has average avoidance savings $averageAvoidanceSavings") }

Tasks with highest negative avoidance savings builds.map { build -> buildApi.getGradleBuildCachePerformance(build.id, null) } .flatMap { it.taskExecution.filter { (it.avoidanceSavings ?: 0) < 0 } } .groupBy { it.taskPath } .map { (taskPath, taskExecutions) -> taskPath to taskExecutions.map { it.avoidanceSavings!! }.average() } .sorted { pair -> pair.second } .forEach { (taskPath, averageAvoidanceSavings) -> println("Task $taskPath has average avoidance savings $averageAvoidanceSavings") }

Tasks with highest negative avoidance savings builds.map { build -> buildApi.getGradleBuildCachePerformance(build.id, null) } .flatMap { it.taskExecution.filter { (it.avoidanceSavings ?: 0) < 0 } } .groupBy { it.taskPath } .map { (taskPath, taskExecutions) -> taskPath to taskExecutions.map { it.avoidanceSavings!! }.average() } .sorted { pair -> pair.second } .forEach { (taskPath, averageAvoidanceSavings) -> println("Task $taskPath has average avoidance savings $averageAvoidanceSavings") }

Tasks with highest negative avoidance savings builds.map { build -> buildApi.getGradleBuildCachePerformance(build.id, null) } .flatMap { it.taskExecution.filter { (it.avoidanceSavings ?: 0) < 0 } } .groupBy { it.taskPath } .map { (taskPath, taskExecutions) -> taskPath to taskExecutions.map { it.avoidanceSavings!! }.average() } .sorted { pair -> pair.second } .forEach { (taskPath, averageAvoidanceSavings) -> println("Task $taskPath has average avoidance savings $averageAvoidanceSavings") }

Tasks with highest negative avoidance savings .forEach { (taskPath, averageAvoidanceSavings) -> println("Task $taskPath has average avoidance savings $averageAvoidanceSavings") } Task :app:mergeNativeDebugLibs has average avoidance savings -23s Task :app:dataBindingMergeGenClassesDebug has average avoidance savings -10s Task :app:compileDebugAidl has average avoidance savings -2s Task :lib:mergeDebugConsumerProguardFiles has average avoidance savings -1s

User with the most build cache errors

User with the most build cache errors builds.map { buildApi.getGradleAttributes(it.id, null) to buildApi.getGradleBuildCachePerformance(it.id, null) } .groupBy {it.first.environment.username} .map { (username, buildPairs) -> username to buildPairs.count { it.second.buildCaches?.remote?.isDisabledDueToError ?: false } } .sortedByDescending { pair -> pair.second } .forEach { pair -> println("Username: ${pair.first}, total builds disabled due to errors: $ {pair.second}") }

Project with least avoidance savings

Project with least avoidance savings builds.map { buildApi.getGradleAttributes(it.id, null) to buildApi.getGradleBuildCachePerformance(it.id, null) } .groupBy { it.first.rootProjectName } .map { (projectName, projectBuilds) -> projectName to projectBuilds.map { it.second.avoidanceSavingsSummary.ratio }.average() } .sortedBy { pair -> pair.second } .forEach { pair -> val ratio = pair.second println("Project ${pair.first} with average avoidance savings ratio of ${ratio}") }

builds.filter { it.buildToolType == "gradle" }.map { build -> buildApi.getGradleAttributes(build.id, null) }.filter { it.tags.contains("doctor-negative-avoidance-savings") } Find builds with certain tags

•Find slowest projects •Find slowest tasks •Find most active projects Project summary

Usage: gradle-enterprise-project-summary A compact utility that gathers project metrics using Gradle Enterprise API Options: --access-key-file= The path to the file containing the access key --days= The total number of days to process from the past (if set will ignore hours) --format-duration Formatting the durations by HH:mm:ss --hours= The total number of hours to process from the past (if days set this will be ignored) --project-name= The name of the project to show the builds of (if omitted, all builds are shown) --server-url= The address of the Gradle Enterprise server --work-units= The number of tasks/goals to display Project summary

{ "summary" : { "totalNumberOfBuilds" : "3170", "totalBuildTime" : "631261486", "totalNumberOfUsers" : "16", "totalNumberOfProjects" : "6" }, "projects" : { "main-app" : { "totalNumberOfBuilds" : "3130", "buildTime" : "627827767", "numOfUsers" : "14", "totalTaskExecutionTime" : "487443385", "totalTaskAvoidanceTime" : "2805217043", "totalTaskAvoidableTime" : "138022728", "totalTaskNonAvoidableTime" : "370605501", "tasks" : { "test" : { "totalExecutions" : "7365", "totalTaskExecutionTime" : "68277014", "totalTaskAvoidanceTime" : "235514732", "totalTaskAvoidableTime" : "46062541", "totalTaskNonAvoidableTime" : "21259161", "cacheMissRate" : "9" }, "test_Maven_3_8_5_daily_JDK_18" : { "totalExecutions" : "12", "totalTaskExecutionTime" : "12751161", "totalTaskAvoidanceTime" : "0", "totalTaskAvoidableTime" : "12751161", "totalTaskNonAvoidableTime" : "0", "cacheMissRate" : "100" }, "test_Maven_3_8_5" : { "totalExecutions" : "41", "totalTaskExecutionTime" : "14975383", "totalTaskAvoidanceTime" : "0", "totalTaskAvoidableTime" : "12439278", "totalTaskNonAvoidableTime" : "2536105", Project summary

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Gradle Enterprise Android Features • Find your slowest tests in the test dashboard • Learn which tests are flaky with flaky test insights • Android Instrumentation Test results in Build Scans! Check it out! https://gradle.com/enterprise-customers/oss-projects/

https://ge.gradle.org/scans/tests?tests.sortField=MEAN_DURATION&tests.unstableOnly=true https://bit.ly/3DUBTu0

How many use Room?

•Absolute path sensitivity •Overlapping inputs and outputs •Non exclusive output directory •Kapt removes contents of output directories

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Tweet, Like, Subscribe, Upvote, Star https://github.com/gradle/android-cache-fix-gradle-plugin https://issuetracker.google.com/issues/132245929 please star ⭐ #fixroom

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More Resources Gradle Training https://gradle.com/training/ https://gradle.com/training/introduction-to-gradle https://gradle.com/training/build-cache-deep-dive Gradle Community Slack https://gradle.com/slack-invite https://github.com/gradle/gradle-enterprise-build-validation-scripts https://docs.gradle.com/enterprise/api-manual/ https://github.com/gradle/gradle-enterprise-api-samples

Thank you! Gradle Enterprise Trial osacky.com https://gradle.com/enterprise/trial/ https://go.gradle.com/solutions-engineer https://gradle.com/careers/ Gradle Solutions is hiring #fixroom @nellyspageli https://github.com/gradle/gradle-enterprise-build-validation-scripts https://docs.gradle.com/enterprise/api-manual/ https://github.com/gradle/gradle-enterprise-api-samples https://speakerdeck.com/runningcode/keeping-your-gradle-builds-in-top-shape Room bug Slides

Predictive Test Selection https://gradle.com/gradle-enterprise-solutions/predictive-test-selection/

Predictive Test Selection • Machine learning selects tests which provide useful feedback • 99% accuracy, save 60% of testing time • Predictive Test Selection Simulator • See why tests were selected in dashboard • Not yet available for Android Instrumentation Tests https://ge.micronaut.io/scans/test-selection

Predictive Test Selection Simulator https://ge.spring.io/scans/test-selection

Predictive Test Selection https://ge.gradle.org/scans/test-selection