GraphQL IRL (Android Makers)

film character species homeworld episode

film character species homeworld episode GR APHQL IN REAL L
IFE ROBERTO ORGIU - @_TIWIZ

Fun fact GraphQL.replace(REST) usually returns false

Architectural Pattern Query Language

Leverage Protocol Use own Conventions

Full request Client Performances

Multiple Endpoints Single Endpoint

What is GraphQ What is GraphQL? D E E P
D I V E I N T O

WHY APOLLO? Compile time safety Caching Community Code generation

buildscriptT{ repositoriesT{ google()T }A dependenciesT{ classpathA"com.android.tools.build:gradle:$tools_version" classpathB"org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" }B }C allprojectsT{
repositoriesB{ google()B }D }E

buildscriptT{ repositoriesT{ google()T jcenter() }A dependenciesT{ classpathA"com.android.tools.build:gradle:$tools_version" classpathB"org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" classpath "com.apollographql.apollo:gradle-plugin:$apollo_version"
}B }C allprojectsT{ repositoriesB{ google()B jcenter() }D }E

apply plugin: 'com.android.application' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions' android
{ ... }

apply plugin: 'com.android.application' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions' apply
plugin: 'com.apollographql.android' android { ... }

dependencies { ... implementation "com.apollographql.apollo:apollo-runtime:$apollo_version" implementation "com.apollographql.apollo:apollo-rx2-support:$apollo_version" ... }

DOWNSIDES Apollo-plugin schema.json *.graphql X X

testing

testing Compile time safety MockWebServer

> Task :apollo:generateDebugApolloIR FAILED .../android/apollo/Query.graphql: Cannot query field "nam" on
type "YourType". Did you mean "name"? error: Validation of GraphQL query document failed FAILURE: Build failed with an exception.

@get:Rule val mockWebServer = MockWebServerRule() mockWebServer.enqueueResponse("/response.json") val testApolloClient = ApolloClient.builder()
.serverUrl(mockWebServer.url) .okHttpClient(client) .build()

SHRINK IT

query filmById($filmId: ID){ film(filmID :$filmId){ title episodeID characterConnectionT{ charactersT{ name
homeworldT{ name }A speciesT{ name classification }B filmConnectionT{ filmsT{ title episodeID }C }D }E }F }G }H A u t o m a t i c P e r s i s t e d Q u e r i e s

homeworldT{ name }A speciesT{ name classification }B filmConnectionT{ filmsT{ title episodeID }C }D }E }F }G }H A u t o m a t i c P e r s i s t e d Q u e r i e s variables { "filmId" : 1 }A query: query filmById($filmId: ID) { film(filmId :$filmId) { title episodeID characterConnection { name homeworld{ name }B species { name classification }C filmConnection { films { title episodeID }D }E }F }G }H operationName: filmById

homeworldT{ name }A speciesT{ name classification }B filmConnectionT{ filmsT{ title episodeID }C }D }E }F }G }H A u t o m a t i c P e r s i s t e d Q u e r i e s variables { "filmId" : 1 }A query: query filmById($filmId: ID) { film(filmId :$filmId) { title episodeID characterConnection { name homeworld{ name }B species { name classification }C filmConnection { films { title episodeID }D }E }F }G }H operationName: filmById operationName: filmById variables { "filmId" : 1 }T

A u t o m a t i c P
e r s i s t e d Q u e r i e s operationName: filmById variables { "filmId" : 1 }T extensions: { persistedQuery: { "version": 1, "sha256Hash": "queryHash" } }

Android Back end Query Hash Query Hash Not Found Whole
Query + Query Hash Response

@get:Rule valTmockWebServerT=TMockWebServerRule() mockWebServer.enqueueResponse(“/response.json") valTurlT=TmockWebServer.url valßapolloClientT= ApolloClient.builder() .serverUrl(url) .okHttpClient(client) .build()

valßapolloClientT= ApolloClient.builder() .serverUrl(url) .okHttpClient(client) .build()

valßapolloClientT= ApolloClient.builder() .serverUrl(url) .okHttpClient(client) .enableAutoPersistedQueries(true) .build()

Tricks Tricks J U S T S O M E
query SampleQuery { assetID: sourceId fingerprint: modified headlineInfo: headline { __typename headline: default }A lastUpdated: lastModification }B

Tricks Tricks L A B E L F I E
L D S C A N G O A L O N G D I S T A N C E J U S T S O M E query SampleQuery { assetID: sourceId fingerprint: modified headlineInfo: headline { __typename headline: default }A lastUpdated: lastModification }B

Tricks Tricks A P O L L O A D
D S T Y P E N A M E E V E R Y W H E R E J U S T S O M E query SampleQuery { assetID: sourceId fingerprint: modified headlineInfo: headline { __typename headline: default }A lastUpdated: lastModification }B

Tricks Tricks S C H E M A A N
D Q U E R I E S C A N B E M O V E D J U S T S O M E apollo { schemaFilePath = "/path/my-schema.json" outputPackageName = "pkg.graphql.api" }

Tricks Tricks S U P P O R T S
F O R J A V A B E A N S E M A N T I C S J U S T S O M E class Type { public Another getAnother() { ... } } //build.gradle apollo { useJavaBeansSemanticNaming = true }

Tricks Tricks R E M E M B E R
T O B E O N L I N E ¯ \ _ ( ツ ) _ / ¯ J U S T S O M E

THANK YOU!

GraphQL IRL (Android Makers)

GraphQL IRL (Android Makers)

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