Migrate to stateless app.App (#17542)

* add request context

* move initialialization to server

* use app interface instead of global app functions

* remove app context from webconn

* cleanup

* remove duplicated services

* move context to separate package

* remove finalize init method and move content to NewServer function

* restart workers and schedulers after adding license for tests

* reflect review comments

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

einterfaces/mocks/AppContextInterface.go

@@ -0,0 +1,118 @@
+// Code generated by mockery v1.0.0. DO NOT EDIT.
+
+// Regenerate this file using `make einterfaces-mocks`.
+
+package mocks
+
+import (
+	model "github.com/mattermost/mattermost-server/v5/model"
+	mock "github.com/stretchr/testify/mock"
+)
+
+// AppContextInterface is an autogenerated mock type for the AppContextInterface type
+type AppContextInterface struct {
+	mock.Mock
+}
+
+// AcceptLanguage provides a mock function with given fields:
+func (_m *AppContextInterface) AcceptLanguage() string {
+	ret := _m.Called()
+
+	var r0 string
+	if rf, ok := ret.Get(0).(func() string); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Get(0).(string)
+	}
+
+	return r0
+}
+
+// IpAddress provides a mock function with given fields:
+func (_m *AppContextInterface) IpAddress() string {
+	ret := _m.Called()
+
+	var r0 string
+	if rf, ok := ret.Get(0).(func() string); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Get(0).(string)
+	}
+
+	return r0
+}
+
+// Path provides a mock function with given fields:
+func (_m *AppContextInterface) Path() string {
+	ret := _m.Called()
+
+	var r0 string
+	if rf, ok := ret.Get(0).(func() string); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Get(0).(string)
+	}
+
+	return r0
+}
+
+// RequestId provides a mock function with given fields:
+func (_m *AppContextInterface) RequestId() string {
+	ret := _m.Called()
+
+	var r0 string
+	if rf, ok := ret.Get(0).(func() string); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Get(0).(string)
+	}
+
+	return r0
+}
+
+// Session provides a mock function with given fields:
+func (_m *AppContextInterface) Session() *model.Session {
+	ret := _m.Called()
+
+	var r0 *model.Session
+	if rf, ok := ret.Get(0).(func() *model.Session); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*model.Session)
+		}
+	}
+
+	return r0
+}
+
+// T provides a mock function with given fields: translationID, args
+func (_m *AppContextInterface) T(translationID string, args ...interface{}) string {
+	var _ca []interface{}
+	_ca = append(_ca, translationID)
+	_ca = append(_ca, args...)
+	ret := _m.Called(_ca...)
+
+	var r0 string
+	if rf, ok := ret.Get(0).(func(string, ...interface{}) string); ok {
+		r0 = rf(translationID, args...)
+	} else {
+		r0 = ret.Get(0).(string)
+	}
+
+	return r0
+}
+
+// UserAgent provides a mock function with given fields:
+func (_m *AppContextInterface) UserAgent() string {
+	ret := _m.Called()
+
+	var r0 string
+	if rf, ok := ret.Get(0).(func() string); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Get(0).(string)
+	}
+
+	return r0
+}