mecano/lib/git.js

Common functions for system deployment.

// Generated by CoffeeScript 1.7.1
var child, conditions, each, execute, fs, misc, path;

fs = require('ssh2-fs');

path = require('path');

each = require('each');

misc = require('./misc');

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

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

execute = require('./execute');

module.exports = function(goptions, options, callback) {
  var _ref;
  _ref = misc.args(arguments), goptions = _ref[0], options = _ref[1], callback = _ref[2];
  return misc.options(options, function(err, options) {
    var updated;
    if (err) {
      return callback(err);
    }
    updated = 0;
    return each(options).parallel(goptions.parallel).on('item', function(options, next) {
      var checkout, clone, log, prepare, rev;
      if (options.revision == null) {
        options.revision = 'HEAD';
      }
      rev = null;
      prepare = function() {
        return fs.exists(options.ssh, options.destination, function(err, exists) {
          var gitDir;
          if (err) {
            return next(err);
          }
          if (!exists) {
            return clone();
          }
          gitDir = "" + options.destination + "/.git";
          return fs.exists(options.ssh, gitDir, function(err, exists) {
            if (!exists) {
              return next(new Error("Not a git repository"));
            }
            return log();
          });
        });
      };
      clone = function() {
        return execute({
          ssh: options.ssh,
          cmd: "git clone " + options.source + " " + options.destination,
          cwd: path.dirname(options.destination),
          log: options.log,
          stdout: options.stdout,
          stderr: options.stderr
        }, function(err, executed, stdout, stderr) {
          if (err) {
            return next(err);
          }
          return checkout();
        });
      };
      log = function() {
        return execute({
          ssh: options.ssh,
          cmd: "git log --pretty=format:'%H' -n 1",
          cwd: options.destination,
          log: options.log,
          stdout: options.stdout,
          stderr: options.stderr
        }, function(err, executed, stdout, stderr) {
          var current;
          if (err) {
            return next(err);
          }
          current = stdout.trim();
          return execute({
            ssh: options.ssh,
            cmd: "git rev-list --max-count=1 " + options.revision,
            cwd: options.destination,
            log: options.log,
            stdout: options.stdout,
            stderr: options.stderr
          }, function(err, executed, stdout, stderr) {
            if (err) {
              return next(err);
            }
            if (stdout.trim() !== current) {
              return checkout();
            } else {
              return next();
            }
          });
        });
      };
      checkout = function() {
        return execute({
          ssh: options.ssh,
          cmd: "git checkout " + options.revision,
          cwd: options.destination,
          log: options.log,
          stdout: options.stdout,
          stderr: options.stderr
        }, function(err) {
          if (err) {
            return next(err);
          }
          updated++;
          return next();
        });
      };
      return conditions.all(options, next, prepare);
    }).on('both', function(err) {
      return callback(err, updated);
    });
  });
};