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chore(aws-cdk): refactor concurrent deploy to testable function
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| import * as cxapi from '@aws-cdk/cx-api'; | ||
| import PQueue from 'p-queue'; | ||
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| type Options = { | ||
| concurrency: number; | ||
| deployStack: (stack: cxapi.CloudFormationStackArtifact) => Promise<void>; | ||
| }; | ||
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| type DeploymentState = 'pending' | 'queued' | 'deploying' | 'completed' | 'failed' | 'skipped'; | ||
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| export const deployStacks = async (stacks: cxapi.CloudFormationStackArtifact[], { concurrency, deployStack }: Options): Promise<void> => { | ||
| const queue = new PQueue({ concurrency }); | ||
| const deploymentStates = stacks.reduce((acc, stack) => ({ ...acc, [stack.id]: 'pending' as const }), {} as Record<string, DeploymentState>); | ||
| const deployPromises: Promise<void>[] = []; | ||
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| const isStackUnblocked = (stack: cxapi.CloudFormationStackArtifact) => | ||
| stack.dependencies | ||
| .map(({ id }) => id) | ||
| .filter((id) => !id.endsWith('.assets')) | ||
| .every((id) => deploymentStates[id] === 'completed'); | ||
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| const hasAnyStackFailed = (states: Record<string, DeploymentState>) => Object.values(states).includes('failed'); | ||
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| const enqueueStackDeploys = async () => { | ||
| stacks.forEach(async (stack) => { | ||
| if (deploymentStates[stack.id] === 'pending' && isStackUnblocked(stack)) { | ||
| deploymentStates[stack.id] = 'queued'; | ||
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| deployPromises.push( | ||
| queue.add(async () => { | ||
| // Do not start new deployments if any has already failed | ||
| if (hasAnyStackFailed(deploymentStates)) { | ||
| deploymentStates[stack.id] = 'skipped'; | ||
| return; | ||
| } | ||
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| deploymentStates[stack.id] = 'deploying'; | ||
| try { | ||
| await deployStack(stack); | ||
| } catch (e) { | ||
| deploymentStates[stack.id] = 'failed'; | ||
| throw e; | ||
| } | ||
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| deploymentStates[stack.id] = 'completed'; | ||
| await enqueueStackDeploys(); | ||
| }), | ||
| ); | ||
| } | ||
| }); | ||
| }; | ||
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| await enqueueStackDeploys(); | ||
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| const results = await Promise.allSettled(deployPromises); | ||
| const isRejectedResult = (result: PromiseSettledResult<void>): result is PromiseRejectedResult => result.status === 'rejected'; | ||
| const errors = results.filter(isRejectedResult).map(({ reason }) => reason); | ||
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| if (errors.length) { | ||
| throw Error(`Stack Deployments Failed: ${errors}`); | ||
| } | ||
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| await queue.onIdle(); | ||
| }; |
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