implement pubsub tracing

.github/dependabot.yml

@@ -0,0 +1,18 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    reviewers:
+      - "janstenpickle"
+      - "catostrophe"
+    labels:
+      - "dependency-update"
+    ignore:
+      # managed by sbt-github-actions
+      - dependency-name: "actions/setup-java"
+      - dependency-name: "actions/checkout"
+      - dependency-name: "actions/cache"
+      - dependency-name: "actions/upload-artifact"
+      - dependency-name: "actions/download-artifact"

.github/mergify.yml

@@ -0,0 +1,61 @@
+pull_request_rules:
+  - name: Request reviews and label Stewards' PRs
+    conditions:
+      - or:
+          - author=scala-steward
+          - author=trace4cats-steward[bot]
+    actions:
+      request_reviews:
+        users: [ janstenpickle, catostrophe ]
+      label:
+        add: [ dependency-update ]
+
+  - name: Merge Stewards' PRs
+    conditions:
+      - or:
+          - author=scala-steward
+          - author=trace4cats-steward[bot]
+      - or:
+          - and:
+              - "#files=1"
+              - or:
+                  - files=project/build.properties
+                  - files=project/plugins.sbt
+                  - files=.scalafmt.conf
+          - body~=labels:.*semver-patch
+          - "#approved-reviews-by>=1"
+      - and:
+          - check-success~=Test \(ubuntu-latest, 2\.12\.\d+, temurin@8\)
+          - check-success~=Test \(ubuntu-latest, 2\.12\.\d+, temurin@17\)
+          - check-success~=Test \(ubuntu-latest, 2\.13\.\d+, temurin@8\)
+          - check-success~=Test \(ubuntu-latest, 2\.13\.\d+, temurin@17\)
+          - check-success~=Test \(ubuntu-latest, 3\.\d+\.\d+, temurin@8\)
+          - check-success~=Test \(ubuntu-latest, 3\.\d+\.\d+, temurin@17\)
+    actions:
+      merge:
+        method: rebase
+
+  - name: Merge PRs via Mergify to skip the release step on CI
+    conditions:
+      - or:
+          - author=janstenpickle
+          - author=catostrophe
+      - and:
+          - label=skip-release
+          - label=ready-to-merge
+      - and:
+          - check-success~=Test \(ubuntu-latest, 2\.12\.\d+, temurin@8\)
+          - check-success~=Test \(ubuntu-latest, 2\.12\.\d+, temurin@17\)
+          - check-success~=Test \(ubuntu-latest, 2\.13\.\d+, temurin@8\)
+          - check-success~=Test \(ubuntu-latest, 2\.13\.\d+, temurin@17\)
+          - check-success~=Test \(ubuntu-latest, 3\.\d+\.\d+, temurin@8\)
+          - check-success~=Test \(ubuntu-latest, 3\.\d+\.\d+, temurin@17\)
+    actions:
+      merge:
+        method: rebase
+
+  - name: Delete head branch after merge
+    conditions:
+      - merged
+    actions:
+      delete_head_branch:

.github/release-drafter.yml

@@ -0,0 +1,23 @@
+name-template: 'v$NEXT_MINOR_VERSION'
+tag-template: 'v$NEXT_MINOR_VERSION'
+categories:
+  - title: '🚀 Features'
+    labels:
+      - 'feature'
+      - 'enhancement'
+  - title: '🐛 Bug Fixes'
+    labels:
+      - 'fix'
+      - 'bugfix'
+      - 'bug'
+  - title: '🧰 Maintenance'
+    labels:
+      - 'chore'
+      - 'dependency-update'
+exclude-labels:
+  - 'skip-changelog'      
+change-template: '- $TITLE @$AUTHOR (#$NUMBER)'
+template: |
+  ## Changes
+
+  $CHANGES

.github/workflows/ci.yml

@@ -0,0 +1,162 @@
+# This file was automatically generated by sbt-github-actions using the
+# githubWorkflowGenerate task. You should add and commit this file to
+# your git repository. It goes without saying that you shouldn't edit
+# this file by hand! Instead, if you wish to make changes, you should
+# change your sbt build configuration to revise the workflow description
+# to meet your needs, then regenerate this file.
+
+name: Continuous Integration
+
+on:
+  pull_request:
+    branches: ['**']
+  push:
+    branches: ['**']
+    tags: [v*]
+
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+jobs:
+  build:
+    name: Build and Test
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        scala: [2.13.14, 2.12.16, 3.2.2]
+        java: [temurin@8, temurin@17]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout current branch (full)
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Setup Java (temurin@8)
+        if: matrix.java == 'temurin@8'
+        uses: actions/setup-java@v2
+        with:
+          distribution: temurin
+          java-version: 8
+
+      - name: Setup Java (temurin@17)
+        if: matrix.java == 'temurin@17'
+        uses: actions/setup-java@v2
+        with:
+          distribution: temurin
+          java-version: 17
+
+      - 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') }}-${{ hashFiles('project/build.properties') }}
+
+      - name: Check formatting
+        run: sbt ++${{ matrix.scala }} scalafmtCheckAll scalafmtSbtCheck
+
+      - name: Check that workflows are up to date
+        run: sbt ++${{ matrix.scala }} githubWorkflowCheck
+
+      - name: Build project
+        run: sbt ++${{ matrix.scala }} test
+
+      - name: Compress target directories
+        run: tar cf targets.tar target modules/pubsub-client/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') || github.ref == 'refs/heads/master') && (github.actor != 'mergify[bot]')
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        scala: [2.13.14]
+        java: [temurin@8]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout current branch (full)
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Setup Java (temurin@8)
+        if: matrix.java == 'temurin@8'
+        uses: actions/setup-java@v2
+        with:
+          distribution: temurin
+          java-version: 8
+
+      - name: Setup Java (temurin@17)
+        if: matrix.java == 'temurin@17'
+        uses: actions/setup-java@v2
+        with:
+          distribution: temurin
+          java-version: 17
+
+      - 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') }}-${{ hashFiles('project/build.properties') }}
+
+      - name: Download target directories (2.13.14)
+        uses: actions/download-artifact@v2
+        with:
+          name: target-${{ matrix.os }}-2.13.14-${{ matrix.java }}
+
+      - name: Inflate target directories (2.13.14)
+        run: |
+          tar xf targets.tar
+          rm targets.tar
+
+      - name: Download target directories (2.12.16)
+        uses: actions/download-artifact@v2
+        with:
+          name: target-${{ matrix.os }}-2.12.16-${{ matrix.java }}
+
+      - name: Inflate target directories (2.12.16)
+        run: |
+          tar xf targets.tar
+          rm targets.tar
+
+      - name: Download target directories (3.2.2)
+        uses: actions/download-artifact@v2
+        with:
+          name: target-${{ matrix.os }}-3.2.2-${{ matrix.java }}
+
+      - name: Inflate target directories (3.2.2)
+        run: |
+          tar xf targets.tar
+          rm targets.tar
+
+      - name: Import GPG key
+        id: import_gpg
+        uses: crazy-max/ghaction-import-gpg@v4
+        with:
+          gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY }}
+          passphrase: ${{ secrets.PGP_PASS }}
+
+      - name: Publish artifacts
+        env:
+          SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}
+          SONATYPE_USERNAME: ${{ secrets.SONATYPE_USERNAME }}
+        run: sbt ++${{ matrix.scala }} ciReleaseSonatype

.github/workflows/clean.yml

@@ -0,0 +1,59 @@
+# This file was automatically generated by sbt-github-actions using the
+# githubWorkflowGenerate task. You should add and commit this file to
+# your git repository. It goes without saying that you shouldn't edit
+# this file by hand! Instead, if you wish to make changes, you should
+# change your sbt build configuration to revise the workflow description
+# to meet your needs, then regenerate this file.
+
+name: Clean
+
+on: push
+
+jobs:
+  delete-artifacts:
+    name: Delete Artifacts
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - name: Delete artifacts
+        run: |
+          # Customize those three lines with your repository and credentials:
+          REPO=${GITHUB_API_URL}/repos/${{ github.repository }}
+
+          # A shortcut to call GitHub API.
+          ghapi() { curl --silent --location --user _:$GITHUB_TOKEN "$@"; }
+
+          # A temporary file which receives HTTP response headers.
+          TMPFILE=/tmp/tmp.$$
+
+          # An associative array, key: artifact name, value: number of artifacts of that name.
+          declare -A ARTCOUNT
+
+          # Process all artifacts on this repository, loop on returned "pages".
+          URL=$REPO/actions/artifacts
+          while [[ -n "$URL" ]]; do
+
+            # Get current page, get response headers in a temporary file.
+            JSON=$(ghapi --dump-header $TMPFILE "$URL")
+
+            # Get URL of next page. Will be empty if we are at the last page.
+            URL=$(grep '^Link:' "$TMPFILE" | tr ',' '\n' | grep 'rel="next"' | head -1 | sed -e 's/.*<//' -e 's/>.*//')
+            rm -f $TMPFILE
+
+            # Number of artifacts on this page:
+            COUNT=$(( $(jq <<<$JSON -r '.artifacts | length') ))
+
+            # Loop on all artifacts on this page.
+            for ((i=0; $i < $COUNT; i++)); do
+
+              # Get name of artifact and count instances of this name.
+              name=$(jq <<<$JSON -r ".artifacts[$i].name?")
+              ARTCOUNT[$name]=$(( $(( ${ARTCOUNT[$name]} )) + 1))
+
+              id=$(jq <<<$JSON -r ".artifacts[$i].id?")
+              size=$(( $(jq <<<$JSON -r ".artifacts[$i].size_in_bytes?") ))
+              printf "Deleting '%s' #%d, %'d bytes\n" $name ${ARTCOUNT[$name]} $size
+              ghapi -X DELETE $REPO/actions/artifacts/$id
+            done
+          done

.github/workflows/release-drafter.yml

@@ -0,0 +1,16 @@
+name: Release Drafter
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+jobs:
+  update_release_draft:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: release-drafter/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -0,0 +1,8 @@
+target/
+.idea
+.swp
+local.*
+.bsb/
+.bsp
+.java-version
+**/.DS_store

.scalafmt.conf

@@ -0,0 +1,26 @@
+version = "2.7.5"
+
+style = Intellij
+
+maxColumn = 120
+
+trailingCommas = preserve
+
+newlines {
+  sometimesBeforeColonInMethodReturnType = false
+  penalizeSingleSelectMultiArgList = false
+}
+
+align {
+  arrowEnumeratorGenerator = false
+  ifWhileOpenParen = false
+  openParenCallSite = false
+  openParenDefnSite = false
+
+  tokens = ["%", "%%"]
+}
+
+rewrite {
+  rules = [AvoidInfix, PreferCurlyFors, SortImports, RedundantBraces, RedundantParens]
+  redundantBraces.maxLines = 1
+}