chore: regenerate common templates (#65)

* ci(java): restrict presubmit samples ITs to only snapshot

This is to reduce resource consumption since we often times hit resource quota limit in samples testing.
e.g. googleapis/java-bigquerydatatransfer#410

Source-Author: Stephanie Wang <stephaniewang526@users.noreply.github.com>
Source-Date: Thu Oct 15 17:16:14 2020 -0400
Source-Repo: googleapis/synthtool
Source-Sha: 27e0e916cbfdb3d5ff6639b686cc04f78a0b0386
Source-Link: googleapis/synthtool@27e0e91

* build(java): auto-approve README regeneration

Source-Author: Jeff Ching <chingor@google.com>
Source-Date: Thu Oct 15 16:04:06 2020 -0700
Source-Repo: googleapis/synthtool
Source-Sha: 7c5370937dd9ba9dcf9cd7d2af880a58b389b4f1
Source-Link: googleapis/synthtool@7c53709

.github/workflows/approve-readme.yaml

@@ -0,0 +1,54 @@
+on:
+  pull_request:
+name: auto-merge-readme
+jobs:
+  approve:
+    runs-on: ubuntu-latest
+    if: github.repository_owner == 'googleapis' && github.head_ref == 'autosynth-readme'
+    steps:
+      - uses: actions/github-script@v3.0.0
+        with:
+          github-token: ${{secrets.YOSHI_APPROVER_TOKEN}}
+          script: |
+            // only approve PRs from yoshi-automation
+            if (context.payload.pull_request.user.login !== "yoshi-automation") {
+              return;
+            }
+
+            // only approve PRs like "chore: release <release version>"
+            if (!context.payload.pull_request.title === "chore: regenerate README") {
+              return;
+            }
+
+            // only approve PRs with README.md and synth.metadata changes
+            const files = new Set(
+              (
+                await github.paginate(
+                  github.pulls.listFiles.endpoint({
+                    owner: context.repo.owner,
+                    repo: context.repo.repo,
+                    pull_number: context.payload.pull_request.number,
+                  })
+                )
+              ).map(file => file.filename)
+            );
+            if (files.size != 2 || !files.has("README.md") || !files.has(".github/readme/synth.metadata/synth.metadata")) {
+              return;
+            }
+
+            // approve README regeneration PR
+            await github.pulls.createReview({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: 'Rubber stamped PR!',
+              pull_number: context.payload.pull_request.number,
+              event: 'APPROVE'
+            });
+
+            // attach automerge label
+            await github.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.payload.pull_request.number,
+              labels: ['automerge']
+            });

.kokoro/build.sh

@@ -69,9 +69,16 @@ integration)
     RETURN_CODE=$?
     ;;
 samples)
-    if [[ -f samples/pom.xml ]]
+    SAMPLES_DIR=samples
+    # only run ITs in snapshot/ on presubmit PRs. run ITs in all 3 samples/ subdirectories otherwise.
+    if [[ ! -z ${KOKORO_GITHUB_PULL_REQUEST_NUMBER} ]]
     then
-        pushd samples
+      SAMPLES_DIR=samples/snapshot
+    fi
+
+    if [[ -f ${SAMPLES_DIR}/pom.xml ]]
+    then
+        pushd {SAMPLES_DIR}
         mvn -B \
           -Penable-samples \
           -DtrimStackTrace=false \

synth.metadata

@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-workflows.git",
-        "sha": "2df6fba5901f34812a273f6a4dcb889bf0fbfb22"
+        "sha": "e4868999d085bb984c45f9d683811d2558a77458"
       }
     },
     {
@@ -19,7 +19,7 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "b65ef07d99946d23e900ef2cc490274a16edd336"
+        "sha": "7c5370937dd9ba9dcf9cd7d2af880a58b389b4f1"
       }
     }
   ],
@@ -43,6 +43,7 @@
     ".github/readme/synth.py",
     ".github/release-please.yml",
     ".github/trusted-contribution.yml",
+    ".github/workflows/approve-readme.yaml",
     ".github/workflows/auto-release.yaml",
     ".github/workflows/ci.yaml",
     ".github/workflows/formatting.yaml",