feat: add submission ID and URL as action outputs

.github/workflows/ci.yml

@@ -63,8 +63,17 @@ jobs:
     - run: npm run all
     - name: Run sbt-dependency-submission
       uses: ./
+      id: dependency-submission
       with:
         working-directory: sbt-plugin
         sbt-plugin-version: 2.2.0-SNAPSHOT
+    - name: Check outputs
+      run: |
+        echo ${{ steps.dependency-submission.outputs.submission-id }}
+        echo ${{ steps.dependency-submission.outputs.submission-api-url }}
+        echo ${{ steps.dependency-submission.outputs.snapshot-json-path }}
+    - name: Log snapshot JSON
+      run: |
+        cat ${{ steps.dependency-submission.outputs.snapshot-json-path }} | jq
 
 

.gitignore

@@ -97,3 +97,9 @@ Thumbs.db
 # Ignore built ts files
 __tests__/runner/*
 lib/**/*
+
+# Scala
+.bloop/
+.metals/
+metals.sbt
+target/

README.md

@@ -57,6 +57,20 @@ GitHub Personal Access Token (PAT). Defaults to PAT provided by Action runner.
 
 Example: `${{ secrets.USER_TOKEN }}`
 
+### Outputs
+
+#### `submission-id`
+
+Once the snapshot of the dependencies has been submitted, GitHub responds with an ID of this snapshot.
+
+#### `submission-api-url`
+
+The API URL of the submission created by the action. It can be queried to get the submitted snapshot.
+
+#### `snapshot-json-path`
+
+Path to the temporary JSON file with the dependency snapshot that has been submitted.
+
 #### Example
 
 ##### Excluding some projects or some Scala versions from the dependency submission.
@@ -133,7 +147,3 @@ permissions:
 ### sbt.librarymanagement.ResolveException: Error downloading
 
 This error may happen when you try to access artifacts from private GitHub packages with the default GitHub token. You need to pass personal access token which is allowed to access private packages in the `token` input.
-
-
-
-

action.yml

@@ -37,6 +37,13 @@ inputs:
     description: Version of the sbt plugin to use.
     required: false
     default: '2.1.2'
+outputs:
+  submission-id:
+    description: The ID of the submission created by the action
+  submission-api-url:
+    description: The URL of the submission created by the action
+  snapshot-json-path:
+    description: The path of the snapshot JSON file created by the action
 runs:
   using: 'node16'
   main: 'dist/index.js'

sbt-plugin/src/main/scala/ch/epfl/scala/SubmitDependencyGraph.scala

@@ -82,6 +82,13 @@ object SubmitDependencyGraph {
     val snapshotUrl = s"${githubApiUrl()}/repos/${githubRepository()}/dependency-graph/snapshots"
 
     val snapshotJson = CompactPrinter(Converter.toJsonUnsafe(snapshot))
+
+    val snapshotJsonFile = IO.withTemporaryFile("dependency-snapshot-", ".json", keepFile = true) { file =>
+      IO.write(file, snapshotJson)
+      state.log.info(s"Dependency snapshot written to ${file.getAbsolutePath}")
+      file
+    }
+
     val request = Gigahorse
       .url(snapshotUrl)
       .post(snapshotJson, StandardCharsets.UTF_8)
@@ -96,12 +103,24 @@ object SubmitDependencyGraph {
       snapshot <- getSnapshot(httpResp)
     } yield {
       state.log.info(s"Submitted successfully as $snapshotUrl/${snapshot.id}")
+      setGithubOutputs(
+        "submission-id" -> s"${snapshot.id}",
+        "submission-api-url" -> s"${snapshotUrl}/${snapshot.id}",
+        "snapshot-json-path" -> snapshotJsonFile.getAbsolutePath
+      )
       state
     }
 
     result.get
   }
 
+  // https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-an-output-parameter
+  private def setGithubOutputs(outputs: (String, String)*): Unit = IO.writeLines(
+    file(githubOutput),
+    outputs.toSeq.map { case (name, value) => s"${name}=${value}" },
+    append = true
+  )
+
   private def getSnapshot(httpResp: FullResponse): Try[SnapshotResponse] =
     httpResp.status match {
       case status if status / 100 == 2 =>
@@ -168,6 +187,7 @@ object SubmitDependencyGraph {
   private def githubApiUrl(): String = githubCIEnv("GITHUB_API_URL")
   private def githubRepository(): String = githubCIEnv("GITHUB_REPOSITORY")
   private def githubToken(): String = githubCIEnv("GITHUB_TOKEN")
+  private def githubOutput(): String = githubCIEnv("GITHUB_OUTPUT")
 
   private def githubCIEnv(name: String): String =
     Properties.envOrNone(name).getOrElse {