feat: add github workflows for rust lib

Author: Miaxos

.github/workflows/assigne.yml

@@ -0,0 +1,25 @@
+name: Pull request assignee
+
+on:
+  pull_request:
+    types: [assigned, unassigned, synchronize]
+
+jobs:
+  assignee:
+    name: 'check assignee'
+
+    steps:
+    - name: Check if there is at least one assignee
+      uses: actions/github-script@v2
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        script: |
+          const { data: pull } = await github.pulls.get({
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            pull_number: context.payload.pull_request.number,
+          });
+          if (pull.assignees.length > 0) {
+            return;
+          }
+          throw new Error('Should have at least one assignee');

.github/workflows/changelog.yml

@@ -0,0 +1,45 @@
+name: Pull request changelog
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, labeled, unlabeled]
+
+jobs:
+  changelog:
+    name: 'check changelog change'
+
+    steps:
+    - name: Fail if no changelog change when needed
+      uses: actions/github-script@v2
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        script: |
+          const labelsWhereChangelogChangeIsRequired = [
+            'Action: patch bump',
+            'Action: minor bump',
+            'Action: major bump',
+          ];
+          const { data: labels } = await github.issues.listLabelsOnIssue({
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            issue_number: context.payload.pull_request.number,
+            per_page: 100,
+          });
+          const matchingLabels = labels
+            .filter(label => labelsWhereChangelogChangeIsRequired.includes(label.name))
+          if (matchingLabels.length === 0) {
+            console.log('::debug ::No label requiring changelog change. Nothing to do')
+            return;
+          }
+          const { data: files } = await github.pulls.listFiles({
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            pull_number: context.payload.pull_request.number,
+            per_page: 100,
+          });
+          const fileNotDeletedNames = files
+            .filter(file => file.status === 'added' || file.status === 'modified')
+            .map(file => file.filename)
+          if (!fileNotDeletedNames.includes('CHANGELOG.md')) {
+            throw new Error('CHANGELOG.md Unreleased section shoud have line additions when PR is not a no-release')
+          }

.github/workflows/ci.yml

@@ -0,0 +1,33 @@
+name: Continuous integration
+
+on:
+  pull_request:
+    types: [push, synchronize]
+
+jobs:
+  clippy_check:
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          components: clippy
+      - uses: actions-rs/clippy-check@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          args: --all-features
+  build_and_test:
+    name: Build CI
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+     - uses: actions-rs/cargo@v1
+       with:
+         command: test
+         args: --verbose
+      - uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --all-features --verbose

.github/workflows/label.yml

@@ -0,0 +1,37 @@
+name: Pull request labels
+
+on:
+  pull_request:
+    types: [labeled, unlabeled, synchronize]
+
+jobs:
+  version-labels:
+    name: 'check version label'
+    runs-on: self-hosted
+
+    steps:
+    - name: Check if version label is present
+      uses: actions/github-script@v2
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        script: |
+          const versionLabels = [
+            'Action: no bump',
+            'Action: beta bump',
+            'Action: patch bump',
+            'Action: minor bump',
+            'Action: major bump',
+          ];
+          const { data: labels } = await github.issues.listLabelsOnIssue({
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            issue_number: context.payload.pull_request.number,
+            per_page: 100,
+          });
+          const versionLabelsPresent = labels
+            .filter(label => versionLabels.includes(label.name))
+          if (versionLabelsPresent.length === 1) {
+            return;
+          }
+          console.log(`::debug ::${versionLabelsPresent.length} matching labels`);
+          throw new Error(`Should have one and only one of ${versionLabels.join(', ')} labels`);