feat: Implemenation (#3)

initial commit

action.yml

@@ -0,0 +1,18 @@
+name: '"AWS CodeBuild run project" Action For GitHub Actions'
+description: 'Execute CodeBuild::startBuild for the current repo.'
+branding:
+  icon: 'cloud'
+  color: 'orange'
+inputs:
+  project-name:
+    description: 'AWS CodeBuild Project Name'
+    required: true
+  buildspec-override:
+    description: 'Buildspec Override'
+    required: false
+  env-passthrough:
+    description: 'Comma separated list of environment variables to send to CodeBuild'
+    required: false
+runs:
+  using: 'node12'
+  main: 'dist/index.js'

code-build.js

@@ -0,0 +1,139 @@
+// Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+const core = require("@actions/core");
+const github = require("@actions/github");
+const aws = require("aws-sdk");
+const assert = require("assert");
+
+module.exports = {
+  buildProject,
+  _buildProject,
+  waitForBuildEndTime,
+  inputs2Parameters,
+  buildSdk,
+  logName
+};
+
+function buildProject() {
+  // get a codeBuild instance from the SDK
+  const sdk = buildSdk();
+
+  // Get input options for startBuild
+  const params = inputs2Parameters();
+
+  return _buildProject(sdk, params);
+}
+
+async function _buildProject(sdk, params) {
+  // Start the build
+  const start = await sdk.codeBuild.startBuild(params).promise();
+
+  // Wait for the build to "complete"
+  const build = await waitForBuildEndTime(sdk, start.build);
+
+  // Signal the outcome
+  assert(
+    build.buildStatus === "SUCCEEDED",
+    `Build status: ${build.buildStatus}`
+  );
+}
+
+async function waitForBuildEndTime(sdk, { id, logs }, nextToken) {
+  const { codeBuild, cloudWatchLogs, wait = 1000 * 5 } = sdk;
+
+  // Get the CloudWatchLog info
+  const startFromHead = true;
+  const { cloudWatchLogsArn } = logs;
+  const { logGroupName, logStreamName } = logName(cloudWatchLogsArn);
+
+  // Check the state
+  const [batch, cloudWatch = {}] = await Promise.all([
+    codeBuild.batchGetBuilds({ ids: [id] }).promise(),
+    // The CloudWatchLog _may_ not be set up, only make the call if we have a logGroupName
+    logGroupName &&
+      cloudWatchLogs
+        .getLogEvents({ logGroupName, logStreamName, startFromHead, nextToken })
+        .promise()
+  ]);
+  // Pluck off the relevant state
+  const [current] = batch.builds;
+  const { nextForwardToken, events = [] } = cloudWatch;
+
+  // stdout the CloudWatchLog (everyone likes progress...)
+  events.forEach(({ message }) => console.log(message));
+
+  // We did it! We can stop looking!
+  if (current.endTime && !events.length) return current;
+
+  // More to do: Sleep for 5 seconds :)
+  await new Promise(resolve => setTimeout(resolve, wait));
+
+  // Try again
+  return waitForBuildEndTime(sdk, current, nextForwardToken);
+}
+
+function inputs2Parameters() {
+  const projectName = core.getInput("project-name", { required: true });
+
+  // The github.context.sha is evaluated on import.
+  // This makes it hard to test.
+  // So I use the raw ENV
+  const sourceVersion = process.env[`GITHUB_SHA`];
+  const sourceTypeOverride = "GITHUB";
+  const { owner, repo } = github.context.repo;
+  const sourceLocationOverride = `https://github.com/${owner}/${repo}.git`;
+
+  const buildspecOverride =
+    core.getInput("buildspec-override", { required: false }) || undefined;
+
+  const envVars = core
+    .getInput("env-passthrough", { required: false })
+    .split(",")
+
+    .map(i => i.trim());
+
+  const environmentVariablesOverride = Object.entries(process.env)
+    .filter(([key]) => key.startsWith("GITHUB_") || envVars.includes(key))
+    .map(([name, value]) => ({ name, value, type: "PLAINTEXT" }));
+
+  // The idempotencyToken is intentionally not set.
+  // This way the GitHub events can manage the builds.
+  return {
+    projectName,
+    sourceVersion,
+    sourceTypeOverride,
+    sourceLocationOverride,
+    buildspecOverride,
+    environmentVariablesOverride
+  };
+}
+
+function buildSdk() {
+  const codeBuild = new aws.CodeBuild({
+    customUserAgent: "aws-codbuild-run-project"
+  });
+
+  const cloudWatchLogs = new aws.CloudWatchLogs({
+    customUserAgent: "aws-codbuild-run-project"
+  });
+
+  assert(
+    codeBuild.config.credentials && cloudWatchLogs.config.credentials,
+    "No credentials. Try adding @aws-actions/configure-aws-credentials earlier in your job to set up AWS credentials."
+  );
+
+  return { codeBuild, cloudWatchLogs };
+}
+
+function logName(Arn) {
+  const [logGroupName, logStreamName] = Arn.split(":log-group:")
+    .pop()
+    .split(":log-stream:");
+  if (logGroupName === "null" || logStreamName === "null")
+    return {
+      logGroupName: undefined,
+      logStreamName: undefined
+    };
+  return { logGroupName, logStreamName };
+}

index.js

@@ -0,0 +1,20 @@
+// Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+const core = require("@actions/core");
+const { buildProject } = require("./code-build");
+
+/* istanbul ignore next */
+if (require.main === module) {
+  run();
+}
+
+module.exports = run;
+
+async function run() {
+  try {
+    await buildProject();
+  } catch (error) {
+    core.setFailed(error.message);
+  }
+}