mecano/lib/core/git.js

Common functions for system deployment.

// Generated by CoffeeScript 1.11.1
var fs, misc, path;

module.exports = function(options, callback) {
  var repo_exists, repo_uptodate;
  options.log({
    message: "Entering git",
    level: 'DEBUG',
    module: 'mecano/lib/git'
  });
  if (options.revision == null) {
    options.revision = 'HEAD';
  }
  repo_exists = false;
  repo_uptodate = false;
  return this.call(function(_, callback) {
    return fs.exists(options.ssh, options.target, function(err, exists) {
      var gitDir;
      if (err) {
        return callback(err);
      }
      repo_exists = exists;
      if (!exists) {
        return callback();
      }
      gitDir = options.target + "/.git";
      return fs.exists(options.ssh, gitDir, function(err, exists) {
        if (!exists) {
          return callback(Error("Not a git repository"));
        }
        return callback();
      });
    });
  }).execute({
    cmd: "git clone " + options.source + " " + options.target,
    cwd: path.dirname(options.target),
    unless: function() {
      return repo_exists;
    }
  }).execute({
    cmd: "current=`git log --pretty=format:'%H' -n 1`\ntarget=`git rev-list --max-count=1 " + options.revision + "`\necho \"current revision: $current\"\necho \"expected revision: $target\"\nif [ $current != $target ]; then exit 3; fi",
    cwd: options.target,
    trap: true,
    code_skipped: 3,
    "if": function() {
      return repo_exists;
    },
    shy: true
  }, function(err, uptodate) {
    if (err) {
      throw err;
    }
    return repo_uptodate = uptodate;
  }).execute({
    cmd: "git checkout " + options.revision,
    cwd: options.target,
    unless: function() {
      return repo_uptodate;
    }
  }).then(function(err, status) {
    return callback(err, status);
  });
};

fs = require('ssh2-fs');

path = require('path');

misc = require('../misc');