Azure Functions Guide

// function.json (in-process model) { "bindings": [ { "authLevel": "function", "type": "httpTrigger", "direction": "in", "name": "req", "methods": ["get", "post"] }, { "type": "http", "direction": "out", "name": "res" }, { "type": "queue", "direction": "out", "name": "outputQueue", "queueName": "work-items", "connection": "AzureWebJobsStorage" } ] } // Python function (isolated worker model) import azure.functions as func import json app = func.FunctionApp() @app.function_name(name="HttpTrigger") @app.route(route="hello", methods=["GET", "POST"]) def http_trigger(req: func.HttpRequest) -> func.HttpResponse: name = req.params.get('name', 'World') return func.HttpResponse(f"Hello, {name}!") @app.function_name(name="TimerTrigger") @app.schedule(schedule="0 */5 * * * *", arg_name="timer") def timer_trigger(timer: func.TimerRequest) -> None: logging.info("Timer trigger fired")

// Orchestrator function const df = require('durable-functions'); module.exports = df.orchestrator(function*(context) { // Sequential activities const x = yield context.df.callActivity('ProcessOrder', context.df.getInput()); const y = yield context.df.callActivity('SendConfirmation', x); // Parallel fan-out const tasks = [1, 2, 3].map(i => context.df.callActivity('ProcessItem', i) ); const results = yield context.df.Task.all(tasks); // Wait for external event (human approval) const approval = yield context.df.waitForExternalEvent('Approval'); if (approval) { yield context.df.callActivity('Finalize', results); } return results; }); // Activity function module.exports = async function(context) { const input = context.bindings.input; return { processed: true, id: input.orderId }; };

# Create staging slot az functionapp deployment slot create \ --name my-function-app \ --resource-group myRG \ --slot staging # Deploy to staging slot az functionapp deployment source config-zip \ --name my-function-app \ --resource-group myRG \ --slot staging \ --src function.zip # Swap staging to production az functionapp deployment slot swap \ --name my-function-app \ --resource-group myRG \ --slot staging \ --target-slot production # List slots az functionapp deployment slot list \ --name my-function-app \ --resource-group myRG

# Set app settings az functionapp config appsettings set \ --name my-function-app \ --resource-group myRG \ --settings \ DB_CONNECTION_STRING="Server=..." \ QUEUE_NAME="work-items" \ MAX_BATCH_SIZE=100 # Reference Key Vault secret az functionapp config appsettings set \ --name my-function-app \ --resource-group myRG \ --settings "[email protected](VaultName=myVault;SecretName=db-pass)" # Enable managed identity az functionapp identity assign \ --name my-function-app \ --resource-group myRG # List settings az functionapp config appsettings list \ --name my-function-app \ --resource-group myRG