293 lines
8.9 KiB
PHP
293 lines
8.9 KiB
PHP
<?php
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/*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2010, StatusNet, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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if (!defined('STATUSNET')) {
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exit(1);
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}
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/**
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* State machine for running through Yammer import.
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*
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* @package YammerImportPlugin
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* @author Brion Vibber <brion@status.net>
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*/
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class YammerRunner
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{
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private $state;
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private $client;
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private $importer;
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public static function init()
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{
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$state = Yammer_state::staticGet('id', 1);
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if (!$state) {
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$state = new Yammer_state();
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$state->id = 1;
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$state->state = 'init';
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$state->insert();
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}
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return new YammerRunner($state);
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}
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private function __construct($state)
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{
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$this->state = $state;
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$this->client = new SN_YammerClient(
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common_config('yammer', 'consumer_key'),
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common_config('yammer', 'consumer_secret'),
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$this->state->oauth_token,
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$this->state->oauth_secret);
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$this->importer = new YammerImporter($client);
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}
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/**
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* Check which state we're in
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*
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* @return string
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*/
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public function state()
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{
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return $this->state->state;
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}
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/**
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* Is the import done, finished, complete, finito?
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*
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* @return boolean
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*/
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public function isDone()
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{
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$workStates = array('import-users', 'import-groups', 'fetch-messages', 'save-messages');
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return ($this->state() == 'done');
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}
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/**
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* Check if we have work to do in iterate().
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*/
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public function hasWork()
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{
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$workStates = array('import-users', 'import-groups', 'fetch-messages', 'save-messages');
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return in_array($this->state(), $workStates);
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}
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/**
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* Start the authentication process! If all goes well, we'll get back a URL.
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* Have the user visit that URL, log in on Yammer and verify the importer's
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* permissions. They'll get back a verification code, which needs to be passed
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* on to saveAuthToken().
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*
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* @return string URL
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*/
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public function requestAuth()
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{
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if ($this->state->state != 'init') {
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throw ServerError("Cannot request Yammer auth; already there!");
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}
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$old = clone($this->state);
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$this->state->state = 'requesting-auth';
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$this->state->request_token = $client->requestToken();
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$this->state->update($old);
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return $this->client->authorizeUrl($this->state->request_token);
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}
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/**
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* Now that the user's given us this verification code from Yammer, we can
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* request a final OAuth token/secret pair which we can use to access the
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* API.
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*
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* After success here, we'll be ready to move on and run through iterate()
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* until the import is complete.
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*
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* @param string $verifier
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* @return boolean success
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*/
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public function saveAuthToken($verifier)
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{
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if ($this->state->state != 'requesting-auth') {
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throw ServerError("Cannot save auth token in Yammer import state {$this->state->state}");
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}
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$old = clone($this->state);
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list($token, $secret) = $this->client->getAuthToken($verifier);
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$this->state->verifier = '';
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$this->state->oauth_token = $token;
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$this->state->oauth_secret = $secret;
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$this->state->update($old);
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return true;
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}
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/**
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* Once authentication is complete, we need to call iterate() a bunch of times
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* until state() returns 'done'.
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*
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* @return boolean success
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*/
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public function iterate()
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{
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switch($state->state)
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{
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case 'init':
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case 'requesting-auth':
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// Neither of these should reach our background state!
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common_log(LOG_ERR, "Non-background YammerImport state '$state->state' during import run!");
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return false;
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case 'import-users':
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return $this->iterateUsers();
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case 'import-groups':
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return $this->iterateGroups();
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case 'fetch-messages':
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return $this->iterateFetchMessages();
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case 'save-messages':
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return $this->iterateSaveMessages();
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default:
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common_log(LOG_ERR, "Invalid YammerImport state '$state->state' during import run!");
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return false;
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}
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}
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/**
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* Trundle through one 'page' return of up to 50 user accounts retrieved
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* from the Yammer API, importing them as we go.
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*
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* When we run out of users, move on to groups.
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*
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* @return boolean success
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*/
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private function iterateUsers()
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{
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$old = clone($this->state);
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$page = intval($this->state->users_page) + 1;
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$data = $this->client->users(array('page' => $page));
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if (count($data) == 0) {
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common_log(LOG_INFO, "Finished importing Yammer users; moving on to groups.");
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$this->state->state = 'import-groups';
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} else {
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foreach ($data as $item) {
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$user = $imp->importUser($item);
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common_log(LOG_INFO, "Imported Yammer user " . $item['id'] . " as $user->nickname ($user->id)");
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}
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$this->state->users_page = $page;
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}
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$this->state->update($old);
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return true;
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}
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/**
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* Trundle through one 'page' return of up to 20 user groups retrieved
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* from the Yammer API, importing them as we go.
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*
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* When we run out of groups, move on to messages.
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*
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* @return boolean success
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*/
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private function iterateGroups()
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{
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$old = clone($this->state);
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$page = intval($this->state->groups_page) + 1;
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$data = $this->client->groups(array('page' => $page));
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if (count($data) == 0) {
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common_log(LOG_INFO, "Finished importing Yammer groups; moving on to messages.");
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$this->state->state = 'import-messages';
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} else {
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foreach ($data as $item) {
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$group = $imp->importGroup($item);
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common_log(LOG_INFO, "Imported Yammer group " . $item['id'] . " as $group->nickname ($group->id)");
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}
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$this->state->groups_page = $page;
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}
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$this->state->update($old);
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return true;
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}
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/**
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* Trundle through one 'page' return of up to 20 public messages retrieved
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* from the Yammer API, saving them to our stub table for future import in
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* correct chronological order.
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*
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* When we run out of messages to fetch, move on to saving the messages.
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*
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* @return boolean success
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*/
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private function iterateFetchMessages()
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{
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$old = clone($this->state);
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$oldest = intval($this->state->messages_oldest);
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if ($oldest) {
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$params = array('older_than' => $oldest);
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} else {
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$params = array();
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}
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$data = $this->client->messages($params);
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$messages = $data['messages'];
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if (count($data) == 0) {
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common_log(LOG_INFO, "Finished fetching Yammer messages; moving on to save messages.");
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$this->state->state = 'save-messages';
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} else {
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foreach ($data as $item) {
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Yammer_notice_stub::record($item['id'], $item);
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$oldest = $item['id'];
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}
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$this->state->messages_oldest = $oldest;
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}
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$this->state->update($old);
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return true;
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}
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private function iterateSaveMessages()
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{
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$old = clone($this->state);
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$newest = intval($this->state->messages_newest);
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if ($newest) {
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$stub->addWhere('id > ' . $newest);
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}
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$stub->limit(20);
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$stub->find();
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if ($stub->N == 0) {
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common_log(LOG_INFO, "Finished saving Yammer messages; import complete!");
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$this->state->state = 'done';
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} else {
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while ($stub->fetch()) {
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$item = json_decode($stub->json_data);
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$notice = $this->importer->importNotice($item);
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common_log(LOG_INFO, "Imported Yammer notice " . $item['id'] . " as $notice->id");
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$newest = $item['id'];
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}
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$this->state->messages_newest = $newest;
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}
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$this->state->update($old);
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return true;
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}
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}
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