test: refine daemon framework

test/daemon/daemon.go

@@ -35,27 +35,21 @@ type Config struct {
 	// pouchd binary location
 	Bin string
 
-	Listen  []string
-	HomeDir string
-
+	// The following args are all MUST required,
+	// in case the new daemon conflicts with existing ones.
+	Listen         string
+	HomeDir        string
 	ContainerdAddr string
-
-	ListenCri string
+	ListenCri      string
 
 	// pid of pouchd
 	Pid int
 
 	// timeout for starting daemon
 	timeout int64
-}
-
-// DConfig is the global variable used to pouch daemon test.
-var DConfig Config
 
-func init() {
-	DConfig.Args = make([]string, 0, 1)
-	DConfig.Listen = make([]string, 0, 1)
-	DConfig.timeout = 15
+	// if Debug=true, dump daemon log when deamon failed to start
+	Debug bool
 }
 
 // NewConfig initialize the DConfig with default value.
@@ -66,24 +60,40 @@ func NewConfig() Config {
 	result.LogPath = DaemonLog
 
 	result.Args = make([]string, 0, 1)
-	result.Listen = make([]string, 0, 1)
-
-	result.Args = append(result.Args, "--listen="+Listen)
-	result.Args = append(result.Args, "--home-dir="+HomeDir)
-	result.Args = append(result.Args, "--containerd="+ContainerdAdd)
-	result.Args = append(result.Args, "--listen-cri="+ListenCRI)
-
-	result.Listen = append(result.Listen, Listen)
 
+	result.Listen = Listen
 	result.HomeDir = HomeDir
 	result.ContainerdAddr = ContainerdAdd
 	result.ListenCri = ListenCRI
 
 	result.timeout = 15
+	result.Debug = true
 
 	return result
 }
 
+// NewArgs is used to construct args according to the struct Config and input.
+func (d *Config) NewArgs(args ...string) {
+	// Append all default configuration to d.Args if they exists
+	// For the rest args in parameter, they must follow the pouchd args usage.
+	if len(d.Listen) != 0 {
+		d.Args = append(d.Args, "--listen="+d.Listen)
+	}
+	if len(d.HomeDir) != 0 {
+		d.Args = append(d.Args, "--home-dir="+d.HomeDir)
+	}
+	if len(d.ContainerdAddr) != 0 {
+		d.Args = append(d.Args, "--containerd="+d.ContainerdAddr)
+	}
+	if len(d.ListenCri) != 0 {
+		d.Args = append(d.Args, "--listen-cri="+d.ListenCri)
+	}
+
+	if len(args) != 0 {
+		d.Args = append(d.Args, args...)
+	}
+}
+
 // IsDaemonUp checks if the pouchd is launched.
 func (d *Config) IsDaemonUp() bool {
 	// if pouchd is started with -l option, use the first listen address
@@ -136,9 +146,12 @@ func (d *Config) StartDaemon() error {
 	}()
 
 	if util.WaitTimeout(time.Duration(d.timeout)*time.Second, d.IsDaemonUp) == false {
-		d.DumpLog()
+		if d.Debug == true {
+			d.DumpLog()
+			fmt.Printf("Failed to launch pouchd:%v\n", d.Args)
+		}
+
 		d.KillDaemon()
-		fmt.Printf("Failed to launch pouchd:%v\n", d.Args)
 		return fmt.Errorf("failed to launch pouchd:%v", d.Args)
 	}
 

test/util_daemon.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"strings"
+
+	"github.com/alibaba/pouch/test/command"
+	"github.com/alibaba/pouch/test/daemon"
+
+	"github.com/gotestyourself/gotestyourself/icmd"
+)
+
+// StartDefaultDaemonDebug starts a deamon with default configuration and debug on.
+func StartDefaultDaemonDebug(args ...string) (*daemon.Config, error) {
+	cfg := daemon.NewConfig()
+	cfg.Debug = true
+
+	cfg.NewArgs(args...)
+
+	return &cfg, cfg.StartDaemon()
+}
+
+// StartDefaultDaemon starts a deamon with all default configuration and debug off.
+func StartDefaultDaemon(args ...string) (*daemon.Config, error) {
+	cfg := daemon.NewConfig()
+	cfg.Debug = false
+
+	cfg.NewArgs(args...)
+
+	return &cfg, cfg.StartDaemon()
+}
+
+// StartDaemonBareWithArgs starts a deamon with all user specified parameter.
+func StartDaemonBareWithArgs(cfg *daemon.Config, args ...string) error {
+	cfg.NewArgs(args...)
+
+	return cfg.StartDaemon()
+}
+
+// RestartDaemon restart daemon
+func RestartDaemon(cfg *daemon.Config) error {
+	cfg.KillDaemon()
+	return cfg.StartDaemon()
+}
+
+// RunWithSpecifiedDaemon run pouch command with --host parameter
+func RunWithSpecifiedDaemon(d *daemon.Config, cmd ...string) *icmd.Result {
+	var sock string
+
+	// Find the first -l or --listen parameter and use it.
+	for _, v := range d.Args {
+		if strings.Contains(v, "-l") || strings.Contains(v, "--listen") {
+			if strings.Contains(v, "=") {
+				sock = strings.Split(v, "=")[1]
+			} else {
+				sock = strings.Fields(v)[1]
+			}
+			break
+		}
+	}
+	args := append(append([]string{"--host"}, sock), cmd...)
+	return command.PouchRun(args...)
+}

test/z_cli_daemon_test.go

@@ -3,10 +3,8 @@ package main
 import (
 	"encoding/json"
 	"fmt"
-	"os"
 
 	"github.com/alibaba/pouch/apis/types"
-	"github.com/alibaba/pouch/daemon/config"
 	"github.com/alibaba/pouch/test/command"
 	"github.com/alibaba/pouch/test/daemon"
 	"github.com/alibaba/pouch/test/environment"
@@ -29,29 +27,26 @@ func (suite *PouchDaemonSuite) SetUpTest(c *check.C) {
 
 // TestDaemonCgroupParent tests daemon with cgroup parent
 func (suite *PouchDaemonSuite) TestDaemonCgroupParent(c *check.C) {
-	// Start a test daemon with test args.
-	daemon.DConfig = daemon.NewConfig()
-	daemon.DConfig.Args = append(daemon.DConfig.Args, "--cgroup-parent=tmp")
-
-	err := daemon.DConfig.StartDaemon()
+	dcfg, err := StartDefaultDaemonDebug("--cgroup-parent=tmp")
 	if err != nil {
 		c.Skip("deamon start failed")
 	}
+
 	// Must kill it, as we may loose the pid in next call.
-	defer daemon.DConfig.KillDaemon()
+	defer dcfg.KillDaemon()
 
 	cname := "TestDaemonCgroupParent"
 	{
 		result := command.PouchRun("--host", daemon.Listen, "pull", busyboxImage)
 		if result.ExitCode != 0 {
-			daemon.DConfig.DumpLog()
+			dcfg.DumpLog()
 			c.Fatalf("pull image failed, err:%v", result)
 		}
 	}
 	{
 		result := command.PouchRun("--host", daemon.Listen, "run", "--name", cname, busyboxImage)
 		if result.ExitCode != 0 {
-			daemon.DConfig.DumpLog()
+			dcfg.DumpLog()
 			c.Fatalf("run container failed, err:%v", result)
 		}
 	}
@@ -83,98 +78,64 @@ func (suite *PouchDaemonSuite) TestDaemonListenTCP(c *check.C) {
 	}
 
 	for _, hostDirective := range listeningPorts {
-		daemon.DConfig = daemon.NewConfig()
-
 		addr := fmt.Sprintf("tcp://%s:%s", hostDirective[0], hostDirective[2])
-		daemon.DConfig.Listen = append(daemon.DConfig.Listen, addr)
-		daemon.DConfig.Listen = append(daemon.DConfig.Listen, addr)
-		daemon.DConfig.Args = append(daemon.DConfig.Args, "--listen="+addr)
-
-		err := daemon.DConfig.StartDaemon()
+		dcfg, err := StartDefaultDaemonDebug("--listen=" + addr)
 		c.Assert(err, check.IsNil)
 
 		// verify listen to tcp works
 		command.PouchRun("--host", addr, "version").Assert(c, icmd.Success)
 
-		daemon.DConfig.KillDaemon()
+		dcfg.KillDaemon()
 	}
 }
 
 // TestDaemonConfigFile tests start daemon with configfile works.
 func (suite *PouchDaemonSuite) TestDaemonConfigFile(c *check.C) {
-	configFile := "/tmp/pouch.json"
-	file, err := os.Create(configFile)
-	c.Assert(err, check.IsNil)
-	defer file.Close()
-	defer os.Remove(configFile)
-
-	dcfg := config.Config{
-		Debug: true,
-	}
-	s, _ := json.Marshal(dcfg)
-	fmt.Fprintf(file, "%s", s)
-	file.Sync()
-
-	daemon.DConfig = daemon.NewConfig()
-	daemon.DConfig.Args = append(daemon.DConfig.Args, "--config-file="+configFile)
-
-	//{
-	//	err := daemon.DConfig.StartDaemon()
-	//	c.Assert(err, check.IsNil)
-	//}
-
-	// TODO: verify more
-
-	// Must kill it, as we may loose the pid in next call.
-	defer daemon.DConfig.KillDaemon()
+	// TODO
 }
 
 // TestDaemonInvalideArgs tests invalid args in deamon return error
 func (suite *PouchDaemonSuite) TestDaemonInvalideArgs(c *check.C) {
-	daemon.DConfig = daemon.NewConfig()
-	daemon.DConfig.Args = append(daemon.DConfig.Args, "--config=xxx")
-	err := daemon.DConfig.StartDaemon()
+	_, err := StartDefaultDaemon("--config=xxx")
 	c.Assert(err, check.NotNil)
 }
 
 // TestDaemonRestart tests daemon restart with running container.
 func (suite *PouchDaemonSuite) TestDaemonRestart(c *check.C) {
+	dcfg, err := StartDefaultDaemonDebug()
 	// Start a test daemon with test args.
-	daemon.DConfig = daemon.NewConfig()
-	err := daemon.DConfig.StartDaemon()
 	if err != nil {
 		c.Skip("deamon start failed.")
 	}
 	// Must kill it, as we may loose the pid in next call.
-	defer daemon.DConfig.KillDaemon()
+	defer dcfg.KillDaemon()
 
 	{
-		result := command.PouchRun("--host", daemon.Listen, "pull", busyboxImage)
+		result := RunWithSpecifiedDaemon(dcfg, "pull", busyboxImage)
 		if result.ExitCode != 0 {
-			daemon.DConfig.DumpLog()
+			dcfg.DumpLog()
 			c.Fatalf("pull image failed, err:%v", result)
 		}
 	}
 
 	cname := "TestDaemonRestart"
 	{
-		result := command.PouchRun("--host", daemon.Listen, "run", "--name", cname,
+		result := RunWithSpecifiedDaemon(dcfg, "run", "--name", cname,
 			"-p", "1234:80",
 			busyboxImage)
 		if result.ExitCode != 0 {
-			daemon.DConfig.DumpLog()
+			dcfg.DumpLog()
 			c.Fatalf("run container failed, err:%v", result)
 		}
 	}
 	defer DelContainerForceMultyTime(c, cname)
 
 	// restart daemon
-	daemon.DConfig.KillDaemon()
-	err = daemon.DConfig.StartDaemon()
+	err = RestartDaemon(dcfg)
 	c.Assert(err, check.IsNil)
 
 	// test if the container is running.
-	output := command.PouchRun("inspect", "--host", daemon.Listen, cname).Stdout()
+	output := RunWithSpecifiedDaemon(dcfg, "inspect", cname).Stdout()
 	result := &types.ContainerJSON{}
 	if err := json.Unmarshal([]byte(output), result); err != nil {
 		c.Fatalf("failed to decode inspect output: %v", err)