Plugin framework: add ability to install other plugins to the… (#12232)

* add ability to upload other plugins to the plugin API

* generated client rpc glue code

* fix UploadPlugin API signature

* generated plugin mocks

* added upload plugin test

* removed unused comment

* using single line to call InstallPlugin with file Reader

* fix minimum server version

* added successful plugin upload test

* renamed UploadPlugin to InstallPlugin

plugin/api.go

@@ -4,6 +4,8 @@
 package plugin
 
 import (
+	"io"
+
 	plugin "github.com/hashicorp/go-plugin"
 	"github.com/mattermost/mattermost-server/model"
 )
@@ -557,6 +559,12 @@ type API interface {
 	// Minimum server version: 5.6
 	GetPluginStatus(id string) (*model.PluginStatus, *model.AppError)
 
+	// InstallPlugin will upload another plugin with tar.gz file.
+	// Previous version will be replaced on replace true.
+	//
+	// Minimum server version: 5.18
+	InstallPlugin(file io.Reader, replace bool) (*model.Manifest, *model.AppError)
+
 	// KV Store Section
 
 	// KVSet stores a key-value pair, unique per plugin.

plugin/client_rpc_generated.go

@@ -8,6 +8,7 @@ package plugin
 
 import (
 	"fmt"
+	"io"
 	"log"
 
 	"github.com/mattermost/mattermost-server/mlog"
@@ -3488,6 +3489,36 @@ func (s *apiRPCServer) GetPluginStatus(args *Z_GetPluginStatusArgs, returns *Z_G
 	return nil
 }
 
+type Z_InstallPluginArgs struct {
+	A io.Reader
+	B bool
+}
+
+type Z_InstallPluginReturns struct {
+	A *model.Manifest
+	B *model.AppError
+}
+
+func (g *apiRPCClient) InstallPlugin(file io.Reader, replace bool) (*model.Manifest, *model.AppError) {
+	_args := &Z_InstallPluginArgs{file, replace}
+	_returns := &Z_InstallPluginReturns{}
+	if err := g.client.Call("Plugin.InstallPlugin", _args, _returns); err != nil {
+		log.Printf("RPC call to InstallPlugin API failed: %s", err.Error())
+	}
+	return _returns.A, _returns.B
+}
+
+func (s *apiRPCServer) InstallPlugin(args *Z_InstallPluginArgs, returns *Z_InstallPluginReturns) error {
+	if hook, ok := s.impl.(interface {
+		InstallPlugin(file io.Reader, replace bool) (*model.Manifest, *model.AppError)
+	}); ok {
+		returns.A, returns.B = hook.InstallPlugin(args.A, args.B)
+	} else {
+		return encodableError(fmt.Errorf("API InstallPlugin called but not implemented."))
+	}
+	return nil
+}
+
 type Z_KVSetArgs struct {
 	A string
 	B []byte

plugin/plugintest/api.go

@@ -5,6 +5,8 @@
 package plugintest
 
 import (
+	io "io"
+
 	model "github.com/mattermost/mattermost-server/model"
 	mock "github.com/stretchr/testify/mock"
 )
@@ -2783,3 +2785,28 @@ func (_m *API) UploadFile(data []byte, channelId string, filename string) (*mode
 
 	return r0, r1
 }
+
+// InstallPlugin provides a mock function with given fields: file, replace
+func (_m *API) InstallPlugin(file io.Reader, replace bool) (*model.Manifest, *model.AppError) {
+	ret := _m.Called(file, replace)
+
+	var r0 *model.Manifest
+	if rf, ok := ret.Get(0).(func(io.Reader, bool) *model.Manifest); ok {
+		r0 = rf(file, replace)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*model.Manifest)
+		}
+	}
+
+	var r1 *model.AppError
+	if rf, ok := ret.Get(1).(func(io.Reader, bool) *model.AppError); ok {
+		r1 = rf(file, replace)
+	} else {
+		if ret.Get(1) != nil {
+			r1 = ret.Get(1).(*model.AppError)
+		}
+	}
+
+	return r0, r1
+}