Add apk support (#257)

Author: LinuxSuRen

pkg/os/apk/common.go

@@ -0,0 +1,53 @@
+package apk
+
+import (
+	"fmt"
+	"github.com/linuxsuren/http-downloader/pkg/exec"
+	"runtime"
+)
+
+// CommonInstaller is the installer of a common apk
+type CommonInstaller struct {
+	Name string
+}
+
+// Available check if support current platform
+func (d *CommonInstaller) Available() (ok bool) {
+	if runtime.GOOS == "linux" {
+		_, err := exec.LookPath("apk")
+		ok = err == nil
+	}
+	return
+}
+
+// Install installs the target package
+func (d *CommonInstaller) Install() (err error) {
+	if err = exec.RunCommand("apk", "add", d.Name); err != nil {
+		return
+	}
+	return
+}
+
+// Uninstall uninstalls the Conntrack
+func (d *CommonInstaller) Uninstall() (err error) {
+	err = exec.RunCommand("apk", "del", d.Name)
+	return
+}
+
+// WaitForStart waits for the service be started
+func (d *CommonInstaller) WaitForStart() (ok bool, err error) {
+	ok = true
+	return
+}
+
+// Start starts the Conntrack service
+func (d *CommonInstaller) Start() error {
+	fmt.Println("not supported yet")
+	return nil
+}
+
+// Stop stops the Conntrack service
+func (d *CommonInstaller) Stop() error {
+	fmt.Println("not supported yet")
+	return nil
+}

pkg/os/generic_installer.go

@@ -2,6 +2,7 @@ package os
 
 import (
 	"fmt"
+	"github.com/linuxsuren/http-downloader/pkg/os/apk"
 	"io/ioutil"
 	"runtime"
 	"strings"
@@ -78,6 +79,8 @@ func GenericInstallerRegistry(configFile string, registry core.InstallerRegistry
 			genericPackage.CommonInstaller = &yum.CommonInstaller{Name: genericPackage.Name}
 		case "brew":
 			genericPackage.CommonInstaller = &brew.CommonInstaller{Name: genericPackage.Name}
+		case "apk":
+			genericPackage.CommonInstaller = &apk.CommonInstaller{Name: genericPackage.Name}
 		}
 
 		registry.Registry(genericPackage.Name, &genericPackage)