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Proprietary + Confidential Serverless orchestration with Workflows Mete Atamel Developer Advocate Google Cloud

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Proprietary + Confidential Orchestration vs Choreography in microservices

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Proprietary + Confidential Imagine an e-commerce transaction Too much coupling between services What if one of the services goes down?

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Proprietary + Confidential Choreographed services Services are loosely coupled Who ensures that the transaction is complete?

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Proprietary + Confidential Imagine a more complex transaction

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Proprietary + Confidential Orchestrated services Best of both worlds: Loosely coupled + orchestrator to capture the transaction

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Proprietary + Confidential What’s Workflows?

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Proprietary + Confidential Serverless Compute External API’s Google API’s etc... Workflows - orchestrate & integrate SaaS API’s Private API’s Other Clouds

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- 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

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Proprietary + Confidential Steps

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Proprietary + Confidential Expression language

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Proprietary + Confidential Errors and retries

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Proprietary + Confidential Conditional Expressions

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Proprietary + Confidential How do I use Workflows?

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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 --workflow my-workflow gcloud

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Proprietary + Confidential Cloud Console

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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