Multi product architecture (#3381)

- provides support for compiling Boards directly into the Mattermost suite server
- a ServicesAPI interface replaces the PluginAPI to allow for implementations coming from pluginAPI and suite server.
- a new product package provides a place to register Boards as a suite product and handles life-cycle events
- a new boards package replaces much of the mattermost-plugin logic, allowing this to be shared between plugin and product
- Boards now uses module workspaces; run make setup-go-work

server/model/services_api.go

@@ -0,0 +1,70 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+//go:generate mockgen --build_flags= -destination=mocks/mockservicesapi.go -package mocks . ServicesAPI
+
+package model
+
+import (
+	"database/sql"
+
+	mm_model "github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/shared/mlog"
+)
+
+type ServicesAPI interface {
+	// Channels service
+	GetDirectChannel(userID1, userID2 string) (*mm_model.Channel, error)
+	GetChannelByID(channelID string) (*mm_model.Channel, error)
+	GetChannelMember(channelID string, userID string) (*mm_model.ChannelMember, error)
+	GetChannelsForTeamForUser(teamID string, userID string, includeDeleted bool) (mm_model.ChannelList, error)
+
+	// Post service
+	CreatePost(post *mm_model.Post) (*mm_model.Post, error)
+
+	// User service
+	GetUserByID(userID string) (*mm_model.User, error)
+	GetUserByUsername(name string) (*mm_model.User, error)
+	GetUserByEmail(email string) (*mm_model.User, error)
+	UpdateUser(user *mm_model.User) (*mm_model.User, error)
+	GetUsersFromProfiles(options *mm_model.UserGetOptions) ([]*mm_model.User, error)
+
+	// Team service
+	GetTeamMember(teamID string, userID string) (*mm_model.TeamMember, error)
+	CreateMember(teamID string, userID string) (*mm_model.TeamMember, error)
+
+	// Permissions service
+	HasPermissionToTeam(userID, teamID string, permission *mm_model.Permission) bool
+	HasPermissionToChannel(askingUserID string, channelID string, permission *mm_model.Permission) bool
+
+	// Bot service
+	EnsureBot(bot *mm_model.Bot) (string, error)
+
+	// License service
+	GetLicense() *mm_model.License
+
+	// FileInfoStore service
+	GetFileInfo(fileID string) (*mm_model.FileInfo, error)
+
+	// Cluster service
+	PublishWebSocketEvent(event string, payload map[string]interface{}, broadcast *mm_model.WebsocketBroadcast)
+	PublishPluginClusterEvent(ev mm_model.PluginClusterEvent, opts mm_model.PluginClusterEventSendOptions) error
+
+	// Cloud service
+	GetCloudLimits() (*mm_model.ProductLimits, error)
+
+	// Config service
+	GetConfig() *mm_model.Config
+
+	// Logger service
+	GetLogger() mlog.LoggerIFace
+
+	// KVStore service
+	KVSetWithOptions(key string, value []byte, options mm_model.PluginKVSetOptions) (bool, error)
+
+	// Store service
+	GetMasterDB() (*sql.DB, error)
+
+	// System service
+	GetDiagnosticID() string
+}