1 files changed, 273 insertions, 0 deletions
diff --git a/testing/mozbase/setup_development.py b/testing/mozbase/setup_development.py
new file mode 100755
index 0000000000..c048d504f1
--- /dev/null
+++ b/testing/mozbase/setup_development.py
@@ -0,0 +1,273 @@
+#!/usr/bin/env python
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+"""
+Setup mozbase packages for development.
+
+Packages may be specified as command line arguments.
+If no arguments are given, install all packages.
+
+See https://wiki.mozilla.org/Auto-tools/Projects/Mozbase
+"""
+
+import os
+import subprocess
+import sys
+from optparse import OptionParser
+from subprocess import PIPE
+try:
+    from subprocess import check_call as call
+except ImportError:
+    from subprocess import call
+
+
+# directory containing this file
+here = os.path.dirname(os.path.abspath(__file__))
+
+# all python packages
+mozbase_packages = [i for i in os.listdir(here)
+                    if os.path.exists(os.path.join(here, i, 'setup.py'))]
+
+# testing: https://wiki.mozilla.org/Auto-tools/Projects/Mozbase#Tests
+test_packages = ["mock"]
+
+# documentation: https://wiki.mozilla.org/Auto-tools/Projects/Mozbase#Documentation
+extra_packages = ["sphinx"]
+
+
+def cycle_check(order, dependencies):
+    """ensure no cyclic dependencies"""
+    order_dict = dict([(j, i) for i, j in enumerate(order)])
+    for package, deps in dependencies.items():
+        index = order_dict[package]
+        for d in deps:
+            assert index > order_dict[d], "Cyclic dependencies detected"
+
+
+def info(directory):
+    "get the package setup.py information"
+
+    assert os.path.exists(os.path.join(directory, 'setup.py'))
+
+    # setup the egg info
+    try:
+        call([sys.executable, 'setup.py', 'egg_info'],
+             cwd=directory, stdout=PIPE)
+    except subprocess.CalledProcessError:
+        print "Error running setup.py in %s" % directory
+        raise
+
+    # get the .egg-info directory
+    egg_info = [entry for entry in os.listdir(directory)
+                if entry.endswith('.egg-info')]
+    assert len(egg_info) == 1, 'Expected one .egg-info directory in %s, got: %s' % (directory,
+                                                                                    egg_info)
+    egg_info = os.path.join(directory, egg_info[0])
+    assert os.path.isdir(egg_info), "%s is not a directory" % egg_info
+
+    # read the package information
+    pkg_info = os.path.join(egg_info, 'PKG-INFO')
+    info_dict = {}
+    for line in file(pkg_info).readlines():
+        if not line or line[0].isspace():
+            continue  # XXX neglects description
+        assert ':' in line
+        key, value = [i.strip() for i in line.split(':', 1)]
+        info_dict[key] = value
+
+    return info_dict
+
+
+def get_dependencies(directory):
+    "returns the package name and dependencies given a package directory"
+
+    # get the package metadata
+    info_dict = info(directory)
+
+    # get the .egg-info directory
+    egg_info = [entry for entry in os.listdir(directory)
+                if entry.endswith('.egg-info')][0]
+
+    # read the dependencies
+    requires = os.path.join(directory, egg_info, 'requires.txt')
+    dependencies = []
+    if os.path.exists(requires):
+        for line in file(requires):
+            line = line.strip()
+            # in requires.txt file, a dependency is a non empty line
+            # Also lines like [device] are sections to mark optional
+            # dependencies, we don't want those sections.
+            if line and not (line.startswith('[') and line.endswith(']')):
+                dependencies.append(line)
+
+    # return the information
+    return info_dict['Name'], dependencies
+
+
+def dependency_info(dep):
+    "return dictionary of dependency information from a dependency string"
+    retval = dict(Name=None, Type=None, Version=None)
+    for joiner in ('==', '<=', '>='):
+        if joiner in dep:
+            retval['Type'] = joiner
+            name, version = [i.strip() for i in dep.split(joiner, 1)]
+            retval['Name'] = name
+            retval['Version'] = version
+            break
+    else:
+        retval['Name'] = dep.strip()
+    return retval
+
+
+def unroll_dependencies(dependencies):
+    """
+    unroll a set of dependencies to a flat list
+
+    dependencies = {'packageA': set(['packageB', 'packageC', 'packageF']),
+                    'packageB': set(['packageC', 'packageD', 'packageE', 'packageG']),
+                    'packageC': set(['packageE']),
+                    'packageE': set(['packageF', 'packageG']),
+                    'packageF': set(['packageG']),
+                    'packageX': set(['packageA', 'packageG'])}
+    """
+
+    order = []
+
+    # flatten all
+    packages = set(dependencies.keys())
+    for deps in dependencies.values():
+        packages.update(deps)
+
+    while len(order) != len(packages):
+
+        for package in packages.difference(order):
+            if set(dependencies.get(package, set())).issubset(order):
+                order.append(package)
+                break
+        else:
+            raise AssertionError("Cyclic dependencies detected")
+
+    cycle_check(order, dependencies)  # sanity check
+
+    return order
+
+
+def main(args=sys.argv[1:]):
+
+    # parse command line options
+    usage = '%prog [options] [package] [package] [...]'
+    parser = OptionParser(usage=usage, description=__doc__)
+    parser.add_option('-d', '--dependencies', dest='list_dependencies',
+                      action='store_true', default=False,
+                      help="list dependencies for the packages")
+    parser.add_option('--list', action='store_true', default=False,
+                      help="list what will be installed")
+    parser.add_option('--extra', '--install-extra-packages', action='store_true', default=False,
+                      help="installs extra supporting packages as well as core mozbase ones")
+    options, packages = parser.parse_args(args)
+
+    if not packages:
+        # install all packages
+        packages = sorted(mozbase_packages)
+
+    # ensure specified packages are in the list
+    assert set(packages).issubset(mozbase_packages), \
+        "Packages should be in %s (You gave: %s)" % (mozbase_packages, packages)
+
+    if options.list_dependencies:
+        # list the package dependencies
+        for package in packages:
+            print '%s: %s' % get_dependencies(os.path.join(here, package))
+        parser.exit()
+
+    # gather dependencies
+    # TODO: version conflict checking
+    deps = {}
+    alldeps = {}
+    mapping = {}  # mapping from subdir name to package name
+    # core dependencies
+    for package in packages:
+        key, value = get_dependencies(os.path.join(here, package))
+        deps[key] = [dependency_info(dep)['Name'] for dep in value]
+        mapping[package] = key
+
+        # keep track of all dependencies for non-mozbase packages
+        for dep in value:
+            alldeps[dependency_info(dep)['Name']] = ''.join(dep.split())
+
+    # indirect dependencies
+    flag = True
+    while flag:
+        flag = False
+        for value in deps.values():
+            for dep in value:
+                if dep in mozbase_packages and dep not in deps:
+                    key, value = get_dependencies(os.path.join(here, dep))
+                    deps[key] = [dep for dep in value]
+
+                    for dep in value:
+                        alldeps[dep] = ''.join(dep.split())
+                    mapping[package] = key
+                    flag = True
+                    break
+            if flag:
+                break
+
+    # get the remaining names for the mapping
+    for package in mozbase_packages:
+        if package in mapping:
+            continue
+        key, value = get_dependencies(os.path.join(here, package))
+        mapping[package] = key
+
+    # unroll dependencies
+    unrolled = unroll_dependencies(deps)
+
+    # make a reverse mapping: package name -> subdirectory
+    reverse_mapping = dict([(j, i) for i, j in mapping.items()])
+
+    # we only care about dependencies in mozbase
+    unrolled = [package for package in unrolled if package in reverse_mapping]
+
+    if options.list:
+        # list what will be installed
+        for package in unrolled:
+            print package
+        parser.exit()
+
+    # set up the packages for development
+    for package in unrolled:
+        call([sys.executable, 'setup.py', 'develop', '--no-deps'],
+             cwd=os.path.join(here, reverse_mapping[package]))
+
+    # add the directory of sys.executable to path to aid the correct
+    # `easy_install` getting called
+    # https://bugzilla.mozilla.org/show_bug.cgi?id=893878
+    os.environ['PATH'] = '%s%s%s' % (os.path.dirname(os.path.abspath(sys.executable)),
+                                     os.path.pathsep,
+                                     os.environ.get('PATH', '').strip(os.path.pathsep))
+
+    # install non-mozbase dependencies
+    # these need to be installed separately and the --no-deps flag
+    # subsequently used due to a bug in setuptools; see
+    # https://bugzilla.mozilla.org/show_bug.cgi?id=759836
+    pypi_deps = dict([(i, j) for i, j in alldeps.items()
+                      if i not in unrolled])
+    for package, version in pypi_deps.items():
+        # easy_install should be available since we rely on setuptools
+        call(['easy_install', version])
+
+    # install packages required for unit testing
+    for package in test_packages:
+        call(['easy_install', package])
+
+    # install extra non-mozbase packages if desired
+    if options.extra:
+        for package in extra_packages:
+            call(['easy_install', package])
+
+if __name__ == '__main__':
+    main()