Add GitHub CI (#29)

This needn’t preclude using Evergreen for CI later.

.github/workflows/all.yml

@@ -0,0 +1,45 @@
+on:
+  push:
+    branches:
+      - '*'
+    tags-ignore:
+      - '*'
+  pull_request:
+
+jobs:
+  basics:
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - runsOn: macos-latest
+            mongodb_distro: mongodb-macos-arm64
+
+          - runsOn: ubuntu-latest
+            mongodb_distro: mongodb-linux-x86_64-ubuntu1804
+
+        go_version:
+
+          # This is hard-coded by design in order to catch inadvertent changes
+          # to the minimum-required Go version to build migration-verifier.
+          - 1.19
+          - stable
+
+    runs-on: ${{matrix.os.runsOn}}
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Fetch Go ${{ matrix.go_version }}
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go_version }}
+
+      - name: Build
+        run: go build main/migration_verifier.go
+
+      - name: Test
+        run: go test -v ./...
+        env:
+          MONGODB_DISTRO: ${{matrix.os.mongodb_distro}}

.github/workflows/lint.yml

@@ -0,0 +1,26 @@
+on:
+  push:
+    branches:
+      - '*'
+    tags-ignore:
+      - '*'
+  pull_request:
+
+permissions:
+  contents: read
+  # Optional: allow read access to pull request. Use with `only-new-issues` option.
+  # pull-requests: read
+
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v6
+        with:
+          version: v1.60

go.mod

@@ -1,6 +1,6 @@
 module github.com/10gen/migration-verifier
 
-go 1.18
+go 1.19
 
 require (
 	github.com/deckarep/golang-set/v2 v2.3.0

internal/verifier/pprof.go

@@ -32,12 +32,13 @@ func (verifier *Verifier) MaybeStartPeriodicHeapProfileCollection(ctx context.Co
 func collectHeapUsage() {
 	heapFileName := fmt.Sprintf("heap-%s.out", time.Now().UTC().Format("20060102T150405Z"))
 	heapFile, err := os.Create(heapFileName)
-	defer heapFile.Close()
 
 	if err != nil {
 		panic(err)
 	}
 
+	defer heapFile.Close()
+
 	err = pprof.Lookup("heap").WriteTo(heapFile, 0)
 	if err != nil {
 		panic(err)

main/migration_verifier.go

@@ -212,7 +212,11 @@ func handleArgs(ctx context.Context, cCtx *cli.Context) (*verifier.Verifier, err
 	v.SetNumWorkers(cCtx.Int(numWorkers))
 	v.SetGenerationPauseDelayMillis(time.Duration(cCtx.Int64(generationPauseDelay)))
 	v.SetWorkerSleepDelayMillis(time.Duration(cCtx.Int64(workerSleepDelay)))
-	v.SetPprofInterval(cCtx.String(pprofInterval))
+
+	err = v.SetPprofInterval(cCtx.String(pprofInterval))
+	if err != nil {
+		return nil, err
+	}
 
 	partitionSizeMB := cCtx.Uint64(partitionSizeMB)
 	if partitionSizeMB != 0 {
@@ -226,9 +230,6 @@ func handleArgs(ctx context.Context, cCtx *cli.Context) (*verifier.Verifier, err
 	v.SetStartClean(cCtx.Bool(startClean))
 	logPath := cCtx.String(logPath)
 	v.SetLogger(logPath)
-	if err != nil {
-		return nil, err
-	}
 	if cCtx.Bool(verifyAll) {
 		if len(cCtx.StringSlice(srcNamespace)) > 0 || len(cCtx.StringSlice(dstNamespace)) > 0 {
 			return nil, errors.Errorf("Setting both verifyAll and explicit namespaces is not supported")