test: tag E2E Docker resources and autoremove them (#5558)

Fixes #5555.

test/e2e/runner/cleanup.go

@@ -11,44 +11,73 @@ import (
 
 // Cleanup removes the Docker Compose containers and testnet directory.
 func Cleanup(testnet *e2e.Testnet) error {
-	if testnet.Dir == "" {
-		return errors.New("no directory set")
+	err := cleanupDocker()
+	if err != nil {
+		return err
 	}
-	_, err := os.Stat(testnet.Dir)
-	if os.IsNotExist(err) {
-		return nil
-	} else if err != nil {
+	err = cleanupDir(testnet.Dir)
+	if err != nil {
 		return err
 	}
+	return nil
+}
 
+// cleanupDocker removes all E2E resources (with label e2e=True), regardless
+// of testnet.
+func cleanupDocker() error {
 	logger.Info("Removing Docker containers and networks")
-	err = execCompose(testnet.Dir, "stop")
+
+	// GNU xargs requires the -r flag to not run when input is empty, macOS
+	// does this by default. Ugly, but works.
+	xargsR := `$(if [[ $OSTYPE == "linux-gnu"* ]]; then echo -n "-r"; fi)`
+
+	err := exec("bash", "-c", fmt.Sprintf(
+		"docker container ls -q --filter label=e2e | xargs %v docker container rm -f", xargsR))
+	if err != nil {
+		return err
+	}
+
+	err = exec("bash", "-c", fmt.Sprintf(
+		"docker network ls -q --filter label=e2e | xargs %v docker network rm", xargsR))
 	if err != nil {
 		return err
 	}
 
+	return nil
+}
+
+// cleanupDir cleans up a testnet directory
+func cleanupDir(dir string) error {
+	if dir == "" {
+		return errors.New("no directory set")
+	}
+
+	_, err := os.Stat(dir)
+	if os.IsNotExist(err) {
+		return nil
+	} else if err != nil {
+		return err
+	}
+
+	logger.Info(fmt.Sprintf("Removing testnet directory %q", dir))
+
 	// On Linux, some local files in the volume will be owned by root since Tendermint
 	// runs as root inside the container, so we need to clean them up from within a
 	// container running as root too.
-	absDir, err := filepath.Abs(testnet.Dir)
+	absDir, err := filepath.Abs(dir)
 	if err != nil {
 		return err
 	}
-	err = execDocker("run", "--entrypoint", "", "-v", fmt.Sprintf("%v:/network", absDir),
+	err = execDocker("run", "--rm", "--entrypoint", "", "-v", fmt.Sprintf("%v:/network", absDir),
 		"tendermint/e2e-node", "sh", "-c", "rm -rf /network/*/")
 	if err != nil {
 		return err
 	}
 
-	err = execCompose(testnet.Dir, "down")
+	err = os.RemoveAll(dir)
 	if err != nil {
 		return err
 	}
 
-	logger.Info(fmt.Sprintf("Removing testnet directory %q", testnet.Dir))
-	err = os.RemoveAll(testnet.Dir)
-	if err != nil {
-		return err
-	}
 	return nil
 }

test/e2e/runner/setup.go

@@ -122,6 +122,8 @@ func MakeDockerCompose(testnet *e2e.Testnet) ([]byte, error) {
 
 networks:
   {{ .Name }}:
+    labels:
+      e2e: true
     driver: bridge
 {{- if .IPv6 }}
     enable_ipv6: true
@@ -134,6 +136,8 @@ networks:
 services:
 {{- range .Nodes }}
   {{ .Name }}:
+    labels:
+      e2e: true
     container_name: {{ .Name }}
     image: tendermint/e2e-node
 {{- if eq .ABCIProtocol "builtin" }}