fixing many, many issues

cmd/drone-build/client.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"os"
 
+	log "github.com/Sirupsen/logrus"
 	"github.com/samalba/dockerclient"
 )
 
@@ -98,14 +99,18 @@ func run(client dockerclient.Client, conf *dockerclient.ContainerConfig, pull bo
 	id, err := client.CreateContainer(conf, "")
 	if err != nil {
 		// and pull the image and re-create if that fails
-		client.PullImage(conf.Image, nil)
+		err = client.PullImage(conf.Image, nil)
+		if err != nil {
+			log.Errorf("Error pulling %s. %s\n", conf.Image, err)
+			return nil, err
+		}
+
 		id, err = client.CreateContainer(conf, "")
 		// make sure the container is removed in
 		// the event of a creation error.
-		if err != nil && len(id) != 0 {
-			client.RemoveContainer(id, true, true)
-		}
 		if err != nil {
+			log.Errorf("Error starting %s. %s\n", conf.Image, err)
+			client.RemoveContainer(id, true, true)
 			return nil, err
 		}
 	}
@@ -120,6 +125,7 @@ func run(client dockerclient.Client, conf *dockerclient.ContainerConfig, pull bo
 	// fetches the container information.
 	info, err := client.InspectContainer(id)
 	if err != nil {
+		log.Errorf("Error inspecting %s. %s\n", conf.Image, err)
 		client.RemoveContainer(id, true, true)
 		return nil, err
 	}
@@ -133,6 +139,7 @@ func run(client dockerclient.Client, conf *dockerclient.ContainerConfig, pull bo
 		// starts the container
 		err := client.StartContainer(id, &conf.HostConfig)
 		if err != nil {
+			log.Errorf("Error starting %s. %s\n", conf.Image, err)
 			errc <- err
 			return
 		}
@@ -142,6 +149,7 @@ func run(client dockerclient.Client, conf *dockerclient.ContainerConfig, pull bo
 		// we could use the `wait` function instead
 		rc, err := client.ContainerLogs(id, logOptsTail)
 		if err != nil {
+			log.Errorf("Error tailing %s. %s\n", conf.Image, err)
 			errc <- err
 			return
 		}
@@ -151,6 +159,7 @@ func run(client dockerclient.Client, conf *dockerclient.ContainerConfig, pull bo
 		// fetches the container information
 		info, err := client.InspectContainer(id)
 		if err != nil {
+			log.Errorf("Error getting exit code for %s. %s\n", conf.Image, err)
 			errc <- err
 			return
 		}
@@ -178,14 +187,15 @@ func daemon(client dockerclient.Client, conf *dockerclient.ContainerConfig, pull
 	id, err := client.CreateContainer(conf, "")
 	if err != nil {
 		// and pull the image and re-create if that fails
-		client.PullImage(conf.Image, nil)
+		err = client.PullImage(conf.Image, nil)
-		id, err = client.CreateContainer(conf, "")
-		// make sure the container is removed in
-		// the event of a creation error.
-		if err != nil && len(id) != 0 {
-			client.RemoveContainer(id, true, true)
-		}
 		if err != nil {
+			log.Errorf("Error pulling %s. %s\n", conf.Image, err)
+			return nil, err
+		}
+		id, err = client.CreateContainer(conf, "")
+		if err != nil {
+			log.Errorf("Error creating %s. %s\n", conf.Image, err)
+			client.RemoveContainer(id, true, true)
 			return nil, err
 		}
 	}
@@ -193,11 +203,15 @@ func daemon(client dockerclient.Client, conf *dockerclient.ContainerConfig, pull
 	// fetches the container information
 	info, err := client.InspectContainer(id)
 	if err != nil {
+		log.Errorf("Error inspecting %s. %s\n", conf.Image, err)
 		client.RemoveContainer(id, true, true)
 		return nil, err
 	}
 
 	// starts the container
 	err = client.StartContainer(id, &conf.HostConfig)
+	if err != nil {
+		log.Errorf("Error starting daemon %s. %s\n", conf.Image, err)
+	}
 	return info, err
 }

cmd/drone-build/main.go

@@ -10,6 +10,7 @@ import (
 	"path/filepath"
 	"strings"
 
+	log "github.com/Sirupsen/logrus"
 	"github.com/drone/drone/common"
 	"github.com/samalba/dockerclient"
 )
@@ -20,14 +21,19 @@ var (
 	publish = flag.Bool("publish", false, "")
 	deploy  = flag.Bool("deploy", false, "")
 	notify  = flag.Bool("notify", false, "")
+	debug   = flag.Bool("debug", false, "")
 )
 
 func main() {
 	flag.Parse()
 
+	if *debug {
+		log.SetLevel(log.DebugLevel)
+	}
+
 	ctx, err := parseContext()
 	if err != nil {
-		fmt.Println("Error launching build container.", err)
+		log.Errorln("Error launching build container.", err)
 		os.Exit(1)
 		return
 	}
@@ -37,7 +43,7 @@ func main() {
 	// linked Docker daemon
 	docker, err := dockerclient.NewDockerClient("unix:///var/run/docker.sock", nil)
 	if err != nil {
-		fmt.Println("Error connecting to build server.", err)
+		log.Errorln("Error connecting to build server.", err)
 		os.Exit(1)
 		return
 	}
@@ -46,7 +52,7 @@ func main() {
 	// container to create a pod-like environment.
 	client, err := newClient(docker)
 	if err != nil {
-		fmt.Println("Error starting build server pod", err)
+		log.Errorln("Error starting build server pod", err)
 		os.Exit(1)
 	}
 	ctx.client = client
@@ -56,7 +62,7 @@ func main() {
 	// prior to executing our build tasks.
 	err = setup(ctx)
 	if err != nil {
-		fmt.Println("Error processing .drone.yml file.", err)
+		log.Errorln("Error processing .drone.yml file.", err)
 		client.Destroy()
 		os.Exit(1)
 	}

runner/builtin/runner.go

@@ -124,7 +124,8 @@ func (r *Runner) Run(w *queue.Work) error {
 		worker := newWorkerTimeout(client, w.Repo.Timeout)
 		workers = append(workers, worker)
 		cname := cname(task)
-		state, builderr := worker.Build(cname, in)
+		pullrequest := (w.Commit.PullRequest != "")
+		state, builderr := worker.Build(cname, in, pullrequest)
 
 		switch {
 		case builderr == ErrTimeout:

runner/builtin/worker.go

@@ -41,6 +41,9 @@ var (
 	// default argument to invoke build steps
 	DefaultBuildArgs = []string{"--build", "--clone", "--publish", "--deploy"}
 
+	// default argument to invoke build steps
+	DefaultPullRequestArgs = []string{"--build", "--clone"}
+
 	// default arguments to invoke notify steps
 	DefaultNotifyArgs = []string{"--notify"}
 
@@ -76,10 +79,13 @@ func newWorkerTimeout(client dockerclient.Client, timeout int64) *worker {
 }
 
 // Build executes the clone, build and deploy steps.
-func (w *worker) Build(name string, stdin []byte) (_ int, err error) {
+func (w *worker) Build(name string, stdin []byte, pr bool) (_ int, err error) {
 	// the command line arguments passed into the
 	// build agent container.
 	args := DefaultBuildArgs
+	if pr {
+		args = DefaultPullRequestArgs
+	}
 	args = append(args, "--")
 	args = append(args, string(stdin))