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daemon/daemon.go

@@ -0,0 +1,51 @@
+package daemon
+
+import (
+	"fmt"
+	"os/exec"
+	"time"
+)
+
+type Daemon struct {
+	Registry      string   // Docker registry
+	Mirror        string   // Docker registry mirror
+	Insecure      bool     // Docker daemon enable insecure registries
+	StorageDriver string   // Docker daemon storage driver
+	StoragePath   string   // Docker daemon storage path
+	Disabled      bool     // DOcker daemon is disabled (already running)
+	Debug         bool     // Docker daemon started in debug mode
+	Bip           string   // Docker daemon network bridge IP address
+	DNS           []string // Docker daemon dns server
+	DNSSearch     []string // Docker daemon dns search domain
+	MTU           string   // Docker daemon mtu setting
+	IPv6          bool     // Docker daemon IPv6 networking
+	Experimental  bool     // Docker daemon enable experimental mode
+}
+
+func StartDaemon(d Daemon) error {
+	startDaemon(d)
+	return waitForDaemon()
+}
+
+func waitForDaemon() error {
+	// poll the docker daemon until it is started. This ensures the daemon is
+	// ready to accept connections before we proceed.
+	for i := 0; ; i++ {
+		cmd := commandInfo()
+		err := cmd.Run()
+		if err == nil {
+			break
+		}
+		if i == 15 {
+			fmt.Println("Unable to reach Docker Daemon after 15 attempts.")
+			return fmt.Errorf("failed to reach docker daemon after 15 attempts: %v", err)
+		}
+		time.Sleep(time.Second * 1)
+	}
+	return nil
+}
+
+// helper function to create the docker info command.
+func commandInfo() *exec.Cmd {
+	return exec.Command(dockerExe, "info")
+}