Added support for CI releases

Author: djspiewak

.github/workflows/ci.yml

@@ -12,9 +12,13 @@ on:
     branches: ['**']
   push:
     branches: ['**']
+    tags: [v*]
 
 env:
   GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  SONATYPE_USERNAME: ${{ secrets.SONATYPE_USERNAME }}
+  SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}
+  PGP_SECRET: ${{ secrets.PGP_SECRET }}
 
 jobs:
   build:
@@ -63,3 +67,85 @@ jobs:
         run: sbt ++${{ matrix.scala }} githubWorkflowCheck
 
       - run: sbt ++${{ matrix.scala }} '${{ matrix.ci }}'
+
+      - name: Compress target directories
+        run: tar cf targets.tar target root/target core/target webworker/target project/target
+
+      - name: Upload target directories
+        uses: actions/upload-artifact@v2
+        with:
+          name: target-${{ matrix.os }}-${{ matrix.scala }}-${{ matrix.java }}
+          path: targets.tar
+
+  publish:
+    name: Publish Artifacts
+    needs: [build]
+    if: github.event_name != 'pull_request' && (startsWith(github.ref, 'refs/tags/v'))
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        scala: [3.0.1]
+        java: [adopt@1.8]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout current branch (full)
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Setup Java and Scala
+        uses: olafurpg/setup-scala@v13
+        with:
+          java-version: ${{ matrix.java }}
+
+      - name: Cache sbt
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.sbt
+            ~/.ivy2/cache
+            ~/.coursier/cache/v1
+            ~/.cache/coursier/v1
+            ~/AppData/Local/Coursier/Cache/v1
+            ~/Library/Caches/Coursier/v1
+          key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
+
+      - name: Download target directories (2.12.14)
+        uses: actions/download-artifact@v2
+        with:
+          name: target-${{ matrix.os }}-2.12.14-${{ matrix.java }}
+
+      - name: Inflate target directories (2.12.14)
+        run: |
+          tar xf targets.tar
+          rm targets.tar
+
+      - name: Download target directories (2.13.6)
+        uses: actions/download-artifact@v2
+        with:
+          name: target-${{ matrix.os }}-2.13.6-${{ matrix.java }}
+
+      - name: Inflate target directories (2.13.6)
+        run: |
+          tar xf targets.tar
+          rm targets.tar
+
+      - name: Download target directories (3.0.1)
+        uses: actions/download-artifact@v2
+        with:
+          name: target-${{ matrix.os }}-3.0.1-${{ matrix.java }}
+
+      - name: Inflate target directories (3.0.1)
+        run: |
+          tar xf targets.tar
+          rm targets.tar
+
+      - name: Import signing key
+        run: echo $PGP_SECRET | base64 -d | gpg --import
+
+      - name: Hack pinentry to use PGP_PASSPHRASE
+        env:
+          PGP_PASSPHRASE: ${{ secrets.PGP_PASSPHRASE }}
+        run: echo "$PGP_PASSPHRASE" | gpg --batch --yes --passphrase-fd 0 build.sbt &> /dev/null
+
+      - run: sbt ++${{ matrix.scala }} release

build.sbt

@@ -40,6 +40,8 @@ ThisBuild / scmInfo := Some(
     url("https://github.com/scala-js/scala-js-macrotask-executor"),
     "git@github.com:scala-js/scala-js-macrotask-executor.git"))
 
+// build and matrix configuration
+
 ThisBuild / crossScalaVersions := Seq("2.12.14", "2.13.6", "3.0.1")
 
 ThisBuild / githubWorkflowBuildPreamble ++= Seq(
@@ -66,6 +68,21 @@ addCommandAlias("ciFirefox", "; set useJSEnv := JSEnv.Firefox; all core/test web
 addCommandAlias("ciChrome", "; set useJSEnv := JSEnv.Chrome; all core/test webworker/test; set useJSEnv := JSEnv.NodeJS")
 addCommandAlias("ciJSDOMNodeJS", "; set useJSEnv := JSEnv.JSDOMNodeJS; core/test; set useJSEnv := JSEnv.NodeJS")
 
+// release configuration
+
+enablePlugins(SonatypeCiReleasePlugin)
+
+ThisBuild / spiewakMainBranches := Seq("main")
+
+// we can remove this once we have a non-password-protected key in the secrets
+ThisBuild / githubWorkflowPublishPreamble +=
+  WorkflowStep.Run(
+    List("echo \"$PGP_PASSPHRASE\" | gpg --batch --yes --passphrase-fd 0 build.sbt &> /dev/null"),
+    name = Some("Hack pinentry to use PGP_PASSPHRASE"),
+    env = Map("PGP_PASSPHRASE" -> "${{ secrets.PGP_PASSPHRASE }}"))
+
+// environments
+
 lazy val useJSEnv =
   settingKey[JSEnv]("Use Node.js or a headless browser for running Scala.js tests")
 
@@ -105,6 +122,8 @@ ThisBuild / Test / jsEnv := {
   }
 }
 
+// project structure
+
 lazy val root = project
   .aggregate(core, webworker)
   .enablePlugins(NoPublishPlugin)