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Mete Atamel
April 16, 2021
Programming
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Serverless orchestration with Workflows
Mete Atamel
April 16, 2021
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Transcript
Proprietary + Confidential Serverless orchestration with Workflows Mete Atamel Developer
Advocate Google Cloud
Proprietary + Confidential Orchestration vs Choreography in microservices
Proprietary + Confidential Imagine an e-commerce transaction Too much coupling
between services What if one of the services goes down?
Proprietary + Confidential Choreographed services Services are loosely coupled Who
ensures that the transaction is complete?
Proprietary + Confidential Imagine a more complex transaction
Proprietary + Confidential Orchestrated services Best of both worlds: Loosely
coupled + orchestrator to capture the transaction
Proprietary + Confidential What’s Workflows?
Proprietary + Confidential Serverless Compute External API’s Google API’s etc...
Workflows - orchestrate & integrate SaaS API’s Private API’s Other Clouds
- callMyFunction: call: http.get args: url: https://us-central1-project123.cloudfunctions.net/... query: metric: NoOfTrs
result: metricResult - saveResult: switch: - condition: ${ metricResult.body.TrNo > 100 } call: http.post args: url: https://mydeployment.... body: Metric: ${ metricResult.body.TrNo } getMetric TrNo>100 End Yes No {“metric”:”NoOfTrs”} Notify
Proprietary + Confidential Steps
Proprietary + Confidential Expression language
Proprietary + Confidential Errors and retries
Proprietary + Confidential Conditional Expressions
Proprietary + Confidential How do I use Workflows?
Proprietary + Confidential # Deploy a workflow gcloud workflows deploy
my-workflow --source=workflow.yaml # Execute a workflow gcloud workflows execute my-workflow # See the result gcloud workflows executions describe <your-execution-id> --workflow my-workflow gcloud
Proprietary + Confidential Cloud Console
Proprietary + Confidential Workflows cloud.google.com/workflows Quickstarts cloud.google.com/workflows/docs/quickstarts Codelab: Introduction to
serverless orchestration with Workflows codelabs.developers.google.com/codelabs/cloud-workflows-intro Thank you