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// Copyright 2016 The go-github AUTHORS. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package github
import (
"errors"
"fmt"
"net/http"
"strings"
)
// MigrationService provides access to the migration related functions
// in the GitHub API.
//
// GitHub API docs: https://developer.github.com/v3/migration/
type MigrationService struct {
client *Client
}
// Migration represents a GitHub migration (archival).
type Migration struct {
ID *int `json:"id,omitempty"`
GUID *string `json:"guid,omitempty"`
// State is the current state of a migration.
// Possible values are:
// "pending" which means the migration hasn't started yet,
// "exporting" which means the migration is in progress,
// "exported" which means the migration finished successfully, or
// "failed" which means the migration failed.
State *string `json:"state,omitempty"`
// LockRepositories indicates whether repositories are locked (to prevent
// manipulation) while migrating data.
LockRepositories *bool `json:"lock_repositories,omitempty"`
// ExcludeAttachments indicates whether attachments should be excluded from
// the migration (to reduce migration archive file size).
ExcludeAttachments *bool `json:"exclude_attachments,omitempty"`
URL *string `json:"url,omitempty"`
CreatedAt *string `json:"created_at,omitempty"`
UpdatedAt *string `json:"updated_at,omitempty"`
Repositories []*Repository `json:"repositories,omitempty"`
}
func (m Migration) String() string {
return Stringify(m)
}
// MigrationOptions specifies the optional parameters to Migration methods.
type MigrationOptions struct {
// LockRepositories indicates whether repositories should be locked (to prevent
// manipulation) while migrating data.
LockRepositories bool
// ExcludeAttachments indicates whether attachments should be excluded from
// the migration (to reduce migration archive file size).
ExcludeAttachments bool
}
// startMigration represents the body of a StartMigration request.
type startMigration struct {
// Repositories is a slice of repository names to migrate.
Repositories []string `json:"repositories,omitempty"`
// LockRepositories indicates whether repositories should be locked (to prevent
// manipulation) while migrating data.
LockRepositories *bool `json:"lock_repositories,omitempty"`
// ExcludeAttachments indicates whether attachments should be excluded from
// the migration (to reduce migration archive file size).
ExcludeAttachments *bool `json:"exclude_attachments,omitempty"`
}
// StartMigration starts the generation of a migration archive.
// repos is a slice of repository names to migrate.
//
// GitHub API docs: https://developer.github.com/v3/migration/migrations/#start-a-migration
func (s *MigrationService) StartMigration(org string, repos []string, opt *MigrationOptions) (*Migration, *Response, error) {
u := fmt.Sprintf("orgs/%v/migrations", org)
body := &startMigration{Repositories: repos}
if opt != nil {
body.LockRepositories = Bool(opt.LockRepositories)
body.ExcludeAttachments = Bool(opt.ExcludeAttachments)
}
req, err := s.client.NewRequest("POST", u, body)
if err != nil {
return nil, nil, err
}
// TODO: remove custom Accept header when this API fully launches.
req.Header.Set("Accept", mediaTypeMigrationsPreview)
m := &Migration{}
resp, err := s.client.Do(req, m)
if err != nil {
return nil, resp, err
}
return m, resp, nil
}
// ListMigrations lists the most recent migrations.
//
// GitHub API docs: https://developer.github.com/v3/migration/migrations/#get-a-list-of-migrations
func (s *MigrationService) ListMigrations(org string) ([]*Migration, *Response, error) {
u := fmt.Sprintf("orgs/%v/migrations", org)
req, err := s.client.NewRequest("GET", u, nil)
if err != nil {
return nil, nil, err
}
// TODO: remove custom Accept header when this API fully launches.
req.Header.Set("Accept", mediaTypeMigrationsPreview)
var m []*Migration
resp, err := s.client.Do(req, &m)
if err != nil {
return nil, resp, err
}
return m, resp, nil
}
// MigrationStatus gets the status of a specific migration archive.
// id is the migration ID.
//
// GitHub API docs: https://developer.github.com/v3/migration/migrations/#get-the-status-of-a-migration
func (s *MigrationService) MigrationStatus(org string, id int) (*Migration, *Response, error) {
u := fmt.Sprintf("orgs/%v/migrations/%v", org, id)
req, err := s.client.NewRequest("GET", u, nil)
if err != nil {
return nil, nil, err
}
// TODO: remove custom Accept header when this API fully launches.
req.Header.Set("Accept", mediaTypeMigrationsPreview)
m := &Migration{}
resp, err := s.client.Do(req, m)
if err != nil {
return nil, resp, err
}
return m, resp, nil
}
// MigrationArchiveURL fetches a migration archive URL.
// id is the migration ID.
//
// GitHub API docs: https://developer.github.com/v3/migration/migrations/#download-a-migration-archive
func (s *MigrationService) MigrationArchiveURL(org string, id int) (url string, err error) {
u := fmt.Sprintf("orgs/%v/migrations/%v/archive", org, id)
req, err := s.client.NewRequest("GET", u, nil)
if err != nil {
return "", err
}
// TODO: remove custom Accept header when this API fully launches.
req.Header.Set("Accept", mediaTypeMigrationsPreview)
s.client.clientMu.Lock()
defer s.client.clientMu.Unlock()
// Disable the redirect mechanism because AWS fails if the GitHub auth token is provided.
var loc string
saveRedirect := s.client.client.CheckRedirect
s.client.client.CheckRedirect = func(req *http.Request, via []*http.Request) error {
loc = req.URL.String()
return errors.New("disable redirect")
}
defer func() { s.client.client.CheckRedirect = saveRedirect }()
_, err = s.client.Do(req, nil) // expect error from disable redirect
if err == nil {
return "", errors.New("expected redirect, none provided")
}
if !strings.Contains(err.Error(), "disable redirect") {
return "", err
}
return loc, nil
}
// DeleteMigration deletes a previous migration archive.
// id is the migration ID.
//
// GitHub API docs: https://developer.github.com/v3/migration/migrations/#delete-a-migration-archive
func (s *MigrationService) DeleteMigration(org string, id int) (*Response, error) {
u := fmt.Sprintf("orgs/%v/migrations/%v/archive", org, id)
req, err := s.client.NewRequest("DELETE", u, nil)
if err != nil {
return nil, err
}
// TODO: remove custom Accept header when this API fully launches.
req.Header.Set("Accept", mediaTypeMigrationsPreview)
return s.client.Do(req, nil)
}
// UnlockRepo unlocks a repository that was locked for migration.
// id is the migration ID.
// You should unlock each migrated repository and delete them when the migration
// is complete and you no longer need the source data.
//
// GitHub API docs: https://developer.github.com/v3/migration/migrations/#unlock-a-repository
func (s *MigrationService) UnlockRepo(org string, id int, repo string) (*Response, error) {
u := fmt.Sprintf("orgs/%v/migrations/%v/repos/%v/lock", org, id, repo)
req, err := s.client.NewRequest("DELETE", u, nil)
if err != nil {
return nil, err
}
// TODO: remove custom Accept header when this API fully launches.
req.Header.Set("Accept", mediaTypeMigrationsPreview)
return s.client.Do(req, nil)
}
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