aymericbouzy

// scenarioRunner.js
async function scenarioRunner(scenarioIds, runScenario) {
  try {
    await Promise.all(scenarioIds.map(runScenario));
  } catch (error) {
    console.log("A scenario failed", error);
  }
}

// scenarioRunner.spec.js

aymericbouzy

new Saga()
  .do(lockResource)
  .withCompensatingAction(unlockResource)
  .then(processPayment)
  .withCompensatingAction(cancelPayment)
  .then(addBillingItem);

aymericbouzy

const compensatingActions = [];

try {
  await lockResource();
  compensatingActions.push(unlockResource);

  const receipt = await processPayment();
  compensatingActions.push(() => cancelPayment(receipt));

  await addBillingItem();

aymericbouzy

Outcome	percentage
Succeeds on 1st retry	76.3%
Succeeds on 2nd retry	2.8%
Succeeds on 3rd retry	1.3%
Succeeds on 4th retry	1.0%
Succeeds on 5th retry	1.0%
Dead-letter	17.6%

aymericbouzy

let finalError
try {	
  throw "oups!";	
} catch(error) {	
  throw "so clumsy...";	
} catch(error) {
  finalError = error
}
console.log("hello!");
if (finalError) {

aymericbouzy

(function() {
  try {
    return "early";
  } finally {	    
    console.log("hello!");
  }
})();

aymericbouzy

try {
  db.connect();
  const data = db.getData();
  return status(200).data(data);
} catch(error) {
  return status(500).error(error);
} finally {
  db.disconnect();
}

aymericbouzy

(function() {
  try {
    throw "oups!";
  } catch(error) {
    return "early";
  } finally {
    console.log("hello!");
  }
})();

aymericbouzy

try {
  throw "oups!";
} catch(error) {
  throw "so clumsy...";
} finally {
  console.log("hello!");
}

aymericbouzy

try {
  throw "oups!";
} finally {
  console.log("hello!");
}