Add created_pull_numbers output

README.md

@@ -250,5 +250,6 @@ The action provides the following [outputs](https://docs.github.com/en/actions/u
 
 Output | Description
 -------|------------
+`created_pull_numbers` | Space-separated list containing the identifying number of each created pull request. Or empty when the action created no pull requests. For example, `123` or `123 124 125`.
 `was_successful` | Whether or not the changes could be backported successfully to all targets. Either `true` or `false`.
 `was_successful_by_target` | Whether or not the changes could be backported successfully to all targets - broken down by target. Follows the pattern `{{label}}=true\|false`.

action.yml

@@ -88,6 +88,11 @@ inputs:
       By default, only backport labels are used to specify the target branches.
 
 outputs:
+  created_pull_numbers:
+    description: >
+      Space-separated list containing the identifying number of each created pull request.
+      Or empty when the action created no pull requests.
+      For example, '123' or '123 124 125'.
   was_successful:
     description: >
       Whether or not the changes could be backported successfully to all targets.

dist/index.js

@@ -56,6 +56,7 @@ var Output;
 (function (Output) {
     Output["wasSuccessful"] = "was_successful";
     Output["wasSuccessfulByTarget"] = "was_successful_by_target";
+    Output["created_pull_numbers"] = "created_pull_numbers";
 })(Output || (Output = {}));
 class Backport {
     constructor(github, config, git) {
@@ -162,6 +163,7 @@ class Backport {
                 }
                 console.log(`Will copy labels matching ${this.config.copy_labels_pattern}. Found matching labels: ${labelsToCopy}`);
                 const successByTarget = new Map();
+                const createdPullRequestNumbers = new Array();
                 for (const target of target_branches) {
                     console.log(`Backporting to target branch '${target}...'`);
                     try {
@@ -295,6 +297,7 @@ class Backport {
                         }
                         const message = this.composeMessageForSuccess(new_pr.number, target);
                         successByTarget.set(target, true);
+                        createdPullRequestNumbers.push(new_pr.number);
                         yield this.github.createComment({
                             owner,
                             repo,
@@ -318,7 +321,7 @@ class Backport {
                         }
                     }
                 }
-                this.createOutput(successByTarget);
+                this.createOutput(successByTarget, createdPullRequestNumbers);
             }
             catch (error) {
                 if (error instanceof Error) {
@@ -384,11 +387,13 @@ class Backport {
         return (0, dedent_1.default) `Successfully created backport PR for \`${target}\`:
                   - #${pr_number}`;
     }
-    createOutput(successByTarget) {
+    createOutput(successByTarget, createdPullRequestNumbers) {
         const anyTargetFailed = Array.from(successByTarget.values()).includes(false);
         core.setOutput(Output.wasSuccessful, !anyTargetFailed);
         const byTargetOutput = Array.from(successByTarget.entries()).reduce((i, [target, result]) => `${i}${target}=${result}\n`, "");
         core.setOutput(Output.wasSuccessfulByTarget, byTargetOutput);
+        const createdPullNumbersOutput = createdPullRequestNumbers.join(" ");
+        core.setOutput(Output.created_pull_numbers, createdPullNumbersOutput);
     }
 }
 exports.Backport = Backport;

src/backport.ts

@@ -46,6 +46,7 @@ export { experimentalDefaults };
 enum Output {
   wasSuccessful = "was_successful",
   wasSuccessfulByTarget = "was_successful_by_target",
+  created_pull_numbers = "created_pull_numbers",
 }
 
 export class Backport {
@@ -209,6 +210,7 @@ export class Backport {
       );
 
       const successByTarget = new Map<string, boolean>();
+      const createdPullRequestNumbers = new Array<number>();
       for (const target of target_branches) {
         console.log(`Backporting to target branch '${target}...'`);
 
@@ -382,6 +384,7 @@ export class Backport {
 
           const message = this.composeMessageForSuccess(new_pr.number, target);
           successByTarget.set(target, true);
+          createdPullRequestNumbers.push(new_pr.number);
           await this.github.createComment({
             owner,
             repo,
@@ -404,7 +407,7 @@ export class Backport {
         }
       }
 
-      this.createOutput(successByTarget);
+      this.createOutput(successByTarget, createdPullRequestNumbers);
     } catch (error) {
       if (error instanceof Error) {
         console.error(error.message);
@@ -512,7 +515,10 @@ export class Backport {
                   - #${pr_number}`;
   }
 
-  private createOutput(successByTarget: Map<string, boolean>) {
+  private createOutput(
+    successByTarget: Map<string, boolean>,
+    createdPullRequestNumbers: Array<number>,
+  ) {
     const anyTargetFailed = Array.from(successByTarget.values()).includes(
       false,
     );
@@ -523,6 +529,9 @@ export class Backport {
       "",
     );
     core.setOutput(Output.wasSuccessfulByTarget, byTargetOutput);
+
+    const createdPullNumbersOutput = createdPullRequestNumbers.join(" ");
+    core.setOutput(Output.created_pull_numbers, createdPullNumbersOutput);
   }
 }