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c0bf1d7913
* Support branch & tag if specified * Support shortened commit hashes * Skip on first deployment * Get true current ref from git Fixes #1994
60 lines
2.0 KiB
PHP
60 lines
2.0 KiB
PHP
<?php
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/* (c) Anton Medvedev <anton@medv.io>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Deployer;
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use Deployer\Exception\Exception;
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use Deployer\Exception\GracefulShutdownException;
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// Cancel deployment if there would be no change to the codebase.
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// This avoids unnecessary releases if the latest commit has already been deployed.
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desc('Check remote head');
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task('deploy:check_remote', function () {
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$repository = get('repository');
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if (empty($repository)) {
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throw new Exception("You need to specify a repository.");
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}
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// Skip if there is no current deployment to compare
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if (! test('[ -d {{deploy_path}}/current/.git ]')) {
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return;
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}
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// Determine the hash of the remote revision about to be deployed
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$targetRevision = input()->getOption('revision');
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if (!$targetRevision) {
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$ref = 'HEAD';
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$opt = '';
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if ($tag = input()->getOption('tag')) {
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$ref = $tag;
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$opt = '--tags';
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} elseif ($branch = get('branch')) {
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$ref = $branch;
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$opt = '--heads';
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}
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$remoteLs = runLocally(sprintf("%s ls-remote $opt $repository $ref", get('bin/git')));
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if (strstr($remoteLs, "\n")) {
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throw new Exception("Could not determine target revision. '$ref' matched multiple commits.");
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}
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if (!$remoteLs) {
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throw new Exception("Could not resolve a revision from '$ref'.");
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}
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$targetRevision = substr($remoteLs, 0, strpos($remoteLs, "\t"));
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}
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// Compare commit hashes. We use strpos to support short versions.
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$targetRevision = trim($targetRevision);
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$lastDeployedRevision = trim(run(sprintf('cd {{deploy_path}}/current && %s rev-parse HEAD', get('bin/git'))));
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if ($targetRevision && strpos($lastDeployedRevision, $targetRevision) === 0) {
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throw new GracefulShutdownException("Already up-to-date.");
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}
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});
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