feat: add retries (#181)

.github/workflows/test.yml

@@ -34,7 +34,6 @@ jobs:
       - name: 'npm test'
         run: 'npm run test'
 
-
   credentials_json:
     if: ${{ github.event_name == 'push' || github.repository == github.event.pull_request.head.repo.full_name }}
     name: 'credentials_json'
@@ -99,6 +98,14 @@ jobs:
           id_token_audience: 'https://secretmanager.googleapis.com/'
           id_token_include_email: true
 
+      - id: 'auth-sa-retries'
+        name: 'auth-sa-retries'
+        uses: './'
+        with:
+          retries: '2'
+          backoff: '200'
+          backoff_limit: '1000'
+          credentials_json: '${{ secrets.AUTH_SA_KEY_JSON }}'
 
   workload_identity_federation:
     if: ${{ github.event_name == 'push' || github.repository == github.event.pull_request.head.repo.full_name }}
@@ -170,6 +177,16 @@ jobs:
           id_token_audience: 'https://secretmanager.googleapis.com/'
           id_token_include_email: true
 
+      - id: 'auth-wif-retries'
+        name: 'auth-wif-retries'
+        uses: './'
+        with:
+          retries: '2'
+          backoff: '200'
+          backoff_limit: '1000'
+          workload_identity_provider: '${{ secrets.WIF_PROVIDER_NAME }}'
+          service_account: '${{ secrets.OIDC_AUTH_SA_EMAIL }}'
+
   # This test ensures that the GOOGLE_APPLICATION_CREDENTIALS environment
   # variable is shared with the container and that the path of the file is on
   # the shared filesystem with the container and that the USER for the container

action.yml

@@ -124,6 +124,24 @@ inputs:
     default: ''
     required: false
 
+  # retries
+  retries:
+    description: |-
+      Number of times to retry a failed authentication attempt. This is useful
+      for automated pipelines that may execute before IAM permissions are fully propogated.
+    default: '0'
+    required: false
+  backoff:
+    description: |-
+      Delay time before trying another authentication attempt. This
+      is implemented using a fibonacci backoff method (e.g. 1-1-2-3-5).
+      This value defaults to 100 milliseconds when retries are greater than 0.
+    required: false
+  backoff_limit:
+    description: |-
+      Limits the retry backoff to the specified value.
+    required: false
+
   # id token params
   id_token_audience:
     description: |-

package-lock.json

@@ -10,7 +10,7 @@
       "license": "Apache-2.0",
       "dependencies": {
         "@actions/core": "^1.7.0",
-        "@google-github-actions/actions-utils": "^0.3.0"
+        "@google-github-actions/actions-utils": "^0.4.0"
       },
       "devDependencies": {
         "@types/chai": "^4.3.1",
@@ -87,9 +87,9 @@
       }
     },
     "node_modules/@google-github-actions/actions-utils": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/@google-github-actions/actions-utils/-/actions-utils-0.3.0.tgz",
-      "integrity": "sha512-zl6/NDnxhB+22E5wZghMnzR0onUNqJFagGtA13wlaADzO1Cb3K1MgTk/U2mPiNlBtyaMlF5XkBGLLhwX+wS2qA==",
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/@google-github-actions/actions-utils/-/actions-utils-0.4.0.tgz",
+      "integrity": "sha512-s2ev2a3WwLg0LWPIi5b9zcaf+jTUkVrQi/iGbQAwX+l0veYsPT1wu9mWV2pZxHfGfxenCjsTw4wSnl9RTJ7ytA==",
       "dependencies": {
         "yaml": "^2.0.1"
       }
@@ -2462,9 +2462,9 @@
       }
     },
     "@google-github-actions/actions-utils": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/@google-github-actions/actions-utils/-/actions-utils-0.3.0.tgz",
-      "integrity": "sha512-zl6/NDnxhB+22E5wZghMnzR0onUNqJFagGtA13wlaADzO1Cb3K1MgTk/U2mPiNlBtyaMlF5XkBGLLhwX+wS2qA==",
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/@google-github-actions/actions-utils/-/actions-utils-0.4.0.tgz",
+      "integrity": "sha512-s2ev2a3WwLg0LWPIi5b9zcaf+jTUkVrQi/iGbQAwX+l0veYsPT1wu9mWV2pZxHfGfxenCjsTw4wSnl9RTJ7ytA==",
       "requires": {
         "yaml": "^2.0.1"
       }

package.json

@@ -24,7 +24,7 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@actions/core": "^1.7.0",
-    "@google-github-actions/actions-utils": "^0.3.0"
+    "@google-github-actions/actions-utils": "^0.4.0"
   },
   "devDependencies": {
     "@types/chai": "^4.3.1",

src/main.ts

@@ -22,6 +22,7 @@ import {
   parseCSV,
   parseDuration,
   pinnedToHeadWarning,
+  withRetries,
 } from '@google-github-actions/actions-utils';
 
 import { WorkloadIdentityClient } from './client/workload_identity_client';
@@ -42,7 +43,7 @@ const oidcWarning =
   `run from a fork. For more information, please see https://docs.github.com/en/actions/security-guides/automatic-token-authentication#permissions-for-the-github_token`;
 
 /**
- * Executes the main action, documented inline.
+ * Executes the main action.
  */
 async function run(): Promise<void> {
   // Warn if pinned to HEAD
@@ -50,13 +51,35 @@ async function run(): Promise<void> {
     logWarning(pinnedToHeadWarning('v0'));
   }
 
+  const retries = Number(getInput('retries'));
+
+  // set to undefined when not provided [avoids Number('') -> 0]
+  const backoff = Number(getInput('backoff')) || undefined;
+  const backoffLimit = Number(getInput('backoff_limit')) || undefined;
+
   try {
+    const mainWithRetries = withRetries(main, {
+      retries: retries,
+      backoff: backoff,
+      backoffLimit: backoffLimit,
+    });
+
+    await mainWithRetries();
+  } catch (err) {
+    const msg = errorMessage(err);
+    setFailed(`google-github-actions/auth failed with: ${msg}`);
+  }
+}
+
+/**
+ * Main wraps the main action logic into a function to be used as a parameter to the withRetries function.
+ */
+async function main() {
   // Load configuration.
   const projectID = getInput('project_id');
   const workloadIdentityProvider = getInput('workload_identity_provider');
   const serviceAccount = getInput('service_account');
-    const audience =
-      getInput('audience') || `https://iam.googleapis.com/${workloadIdentityProvider}`;
+  const audience = getInput('audience') || `https://iam.googleapis.com/${workloadIdentityProvider}`;
   const credentialsJSON = getInput('credentials_json');
   const createCredentialsFile = getBooleanInput('create_credentials_file');
   const exportEnvironmentVariables = getBooleanInput('export_environment_variables');
@@ -264,10 +287,6 @@ async function run(): Promise<void> {
       throw new Error(`Unknown token format "${tokenFormat}"`);
     }
   }
-  } catch (err) {
-    const msg = errorMessage(err);
-    setFailed(`google-github-actions/auth failed with: ${msg}`);
-  }
 }
 
 /**