function perform_github_version_only_diff($project, $update, $previous_revision)
{
require_once 'include/memcache_functions.php';
global $CDASH_MEMCACHE_ENABLED, $CDASH_MEMCACHE_PREFIX, $CDASH_MEMCACHE_SERVER;
$current_revision = $update->Revision;
// Check if we have a Github account associated with this project.
// If so, we are much less likely to get rate-limited by the API.
$auth = array();
$repositories = $project->GetRepositories();
foreach ($repositories as $repo) {
if (strlen($repo['username']) > 0 && strlen($repo['password']) > 0) {
$auth = ['auth' => [$repo['username'], $repo['password']]];
break;
}
}
// Connect to memcache.
if ($CDASH_MEMCACHE_ENABLED) {
list($server, $port) = $CDASH_MEMCACHE_SERVER;
$memcache = cdash_memcache_connect($server, $port);
// Disable memcache for this request if it fails to connect.
if ($memcache === false) {
$CDASH_MEMCACHE_ENABLED = false;
}
}
// Check if we've memcached the difference between these two revisions.
$diff_response = null;
$diff_key = "{$CDASH_MEMCACHE_PREFIX}:{$project->Name}:{$current_revision}:{$previous_revision}";
if ($CDASH_MEMCACHE_ENABLED) {
$cached_response = cdash_memcache_get($memcache, $diff_key);
if ($cached_response !== false) {
$diff_response = $cached_response;
}
}
if (is_null($diff_response)) {
// Use the GitHub API to find what changed between these two revisions.
// This API endpoint takes the following form:
// GET /repos/:owner/:repo/compare/:base...:head
$base_api_url = get_github_api_url($project->CvsUrl);
$client = new GuzzleHttp\Client();
$api_url = "{$base_api_url}/compare/{$previous_revision}...{$current_revision}";
try {
$response = $client->request('GET', $api_url, $auth);
} catch (GuzzleHttp\Exception\ClientException $e) {
// Typically this occurs due to a local commit that GitHub does not
// know about.
add_log($e->getMessage(), "perform_github_version_only_diff", LOG_WARNING, $project->Id);
return;
}
$diff_response = strval($response->getBody());
// Cache the response from the GitHub API for 24 hours.
if ($CDASH_MEMCACHE_ENABLED) {
cdash_memcache_set($memcache, $diff_key, $diff_response, 60 * 60 * 24);
}
}
$response_array = json_decode($diff_response, true);
// To do anything meaningful here our response needs to tell us about commits
// and the files that changed. Abort early if either of these pieces of
// information are missing.
if (!is_array($response_array) || !array_key_exists('commits', $response_array) || !array_key_exists('files', $response_array)) {
return;
}
// Discard merge commits. We want to assign credit to the author who did
// the actual work, not the approver who clicked the merge button.
foreach ($response_array['commits'] as $idx => $commit) {
if (strpos($commit['commit']['message'], 'Merge pull request') !== false) {
unset($response_array['commits'][$idx]);
}
}
// If we still have more than one commit, we'll need to perform follow-up
// API calls to figure out which commit was likely responsible for each
// changed file.
$multiple_commits = false;
if (count($response_array['commits']) > 1) {
$multiple_commits = true;
// Generate list of commits contained by this changeset in reverse order
// (most recent first).
$list_of_commits = array_reverse($response_array['commits']);
// Also maintain a local cache of what files were changed by each commit.
// This prevents us from hitting the GitHub API more than necessary.
$cached_commits = array();
}
$pdo = get_link_identifier()->getPdo();
// Find the commit that changed each file.
foreach ($response_array['files'] as $modified_file) {
if ($multiple_commits) {
// Find the most recent commit that changed this file.
$commit = null;
// First check our local cache.
foreach ($cached_commits as $sha => $files) {
if (in_array($modified_file['filename'], $files)) {
$idx = array_search($sha, array_column($list_of_commits, 'sha'));
$commit = $list_of_commits[$idx];
break;
}
}
if (is_null($commit)) {
// Next, check the database.
$stmt = $pdo->prepare('SELECT DISTINCT revision FROM updatefile
WHERE filename=?');
$stmt->execute(array($modified_file['filename']));
while ($row = $stmt->fetch()) {
foreach ($list_of_commits as $c) {
if ($row['revision'] == $c['sha']) {
$commit = $c;
break;
}
}
if (!is_null($commit)) {
break;
}
}
}
if (is_null($commit)) {
// Lastly, use the Github API to find what files this commit changed.
// To avoid being rate-limited, we only perform this lookup once
// per commit, caching the results as we go.
foreach ($list_of_commits as $c) {
$sha = $c['sha'];
if (array_key_exists($sha, $cached_commits)) {
// We already looked up this commit.
// Apparently it didn't modify the file we're looking for.
continue;
}
$commit_response = null;
$commit_key = "{$CDASH_MEMCACHE_PREFIX}:{$project->Name}:{$sha}";
if ($CDASH_MEMCACHE_ENABLED) {
// Check memcache if it is enabled before hitting
// the GitHub API.
$cached_response = cdash_memcache_get($memcache, $commit_key);
if ($cached_response !== false) {
$commit_response = $cached_response;
}
}
if (is_null($commit_response)) {
$api_url = "{$base_api_url}/commits/{$sha}";
try {
$r = $client->request('GET', $api_url, $auth);
} catch (GuzzleHttp\Exception\ClientException $e) {
add_log($e->getMessage(), "perform_github_version_only_diff", LOG_ERROR, $project->Id);
break;
}
$commit_response = strval($r->getBody());
if ($CDASH_MEMCACHE_ENABLED) {
// Cache this response for 24 hours.
cdash_memcache_set($memcache, $commit_key, $commit_response, 60 * 60 * 24);
}
}
$commit_array = json_decode($commit_response, true);
if (!is_array($commit_array) || !array_key_exists('files', $commit_array)) {
// Skip to the next commit if no list of files was returned.
$cached_commits[$sha] = array();
continue;
}
// Locally cache what files this commit changed.
$cached_commits[$sha] = array_column($commit_array['files'], 'filename');
// Check if this commit modified the file in question.
foreach ($commit_array['files'] as $file) {
if ($file['filename'] === $modified_file['filename']) {
$commit = $c;
break;
}
}
if (!is_null($commit)) {
// Stop examining commits once we find one that matches.
break;
}
}
}
if (is_null($commit)) {
// Skip this file if we couldn't find a commit that modified it.
continue;
}
} else {
$commit = $response_array['commits'][0];
}
// Record this modified file as part of the changeset.
$updateFile = new BuildUpdateFile();
$updateFile->Filename = $modified_file['filename'];
$updateFile->CheckinDate = $commit['commit']['author']['date'];
$updateFile->Author = $commit['commit']['author']['name'];
$updateFile->Email = $commit['commit']['author']['email'];
$updateFile->Committer = $commit['commit']['committer']['name'];
$updateFile->CommitterEmail = $commit['commit']['committer']['email'];
$updateFile->Log = $commit['commit']['message'];
$updateFile->Revision = $commit['sha'];
$updateFile->PriorRevision = $previous_revision;
$updateFile->Status = 'MODIFIED';
$update->AddFile($updateFile);
}
$update->Insert();
return true;
}
$has_subprojects = $Project->GetNumberOfSubProjects() > 0;
// Handle optional date argument.
@($date = $_GET['date']);
if ($date != null) {
$date = htmlspecialchars(pdo_real_escape_string($date));
} else {
$date = date(FMT_DATE);
}
list($previousdate, $currentstarttime, $nextdate) = get_dates($date, $Project->NightlyTime);
// Date range is currently hardcoded to two weeks in the past.
// This could become a configurable value instead.
$date_range = 14;
// Use cache if it's enabled, use_cache isn't set to 0, and an entry exists in Memcache
// Using cache is implied, but the user can set use_cache to 0 to explicitly disable it
// (This is a good method of ensuring the cache for this page stays up)
if ($CDASH_MEMCACHE_ENABLED && !(isset($_GET['use_cache']) && $_GET['use_cache'] == 0) && ($cachedResponse = cdash_memcache_get($memcache, cdash_memcache_key('overview'))) !== false) {
echo $cachedResponse;
return;
}
// begin JSON response that is used to render this page
$response = begin_JSON_response();
get_dashboard_JSON_by_name($projectname, $date, $response);
$response['title'] = "CDash Overview : {$projectname}";
$response['showcalendar'] = 1;
$menu['previous'] = "overview.php?project={$projectname}&date={$previousdate}";
$menu['current'] = "overview.php?project={$projectname}";
$menu['next'] = "overview.php?project={$projectname}&date={$nextdate}";
$response['menu'] = $menu;
$response['hasSubProjects'] = $has_subprojects;
// configure/build/test data that we care about.
$build_measurements = array('configure warnings', 'configure errors', 'build warnings', 'build errors', 'failing tests');
