Build Observatory as part of runtime

tools/run_pub.py

+#!/usr/bin/env python
+# Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+"""Used to run pub before the SDK has been built"""
+
+import argparse
+import os
+import platform
+import subprocess
+import sys
+
+SCRIPT_DIR = os.path.dirname(sys.argv[0])
+DART_ROOT = os.path.realpath(os.path.join(SCRIPT_DIR, '..'))
+PUB_PATH = os.path.join(DART_ROOT,
+                        'sdk/lib/_internal/pub_generated/bin/pub.dart')
+CANARY_PATH = os.path.join(DART_ROOT, 'tools', 'canary.dart')
+
+usage = """run_pub.py --package-root=<package root>"""
+
+def BuildArguments():
+  result = argparse.ArgumentParser(usage=usage)
+  result.add_argument("--package-root", help="package root", default=None)
+  result.add_argument("--dart-executable", help="dart binary", default=None)
+  return result
+
+def ProcessOptions(options, args):
+  return ((options.package_root != None) and
+          (options.dart_executable != None))
+
+def GetPrebuiltDartExecutablePath():
+  osdict = {'Darwin':'macos', 'Linux':'linux', 'Windows':'win32'}
+  system = platform.system()
+  try:
+    osname = osdict[system]
+  except KeyError:
+    print >>sys.stderr, ('WARNING: platform "%s" not supported') % (system)
+    return None;
+  return os.path.join(DART_ROOT, 'tools', 'testing', 'bin', osname, 'dart')
+
+def RunPub(dart, pkg_root, args):
+  return subprocess.call([dart, '--package-root=' + pkg_root, PUB_PATH] + args)
+
+def TryRunningExecutable(dart_executable, pkg_root):
+  return subprocess.call([dart_executable,
+                          '--package-root=' + pkg_root,
+                          CANARY_PATH]) == 42
+
+def DisplayBootstrapWarning():
+  print """\
+
+
+WARNING: Your system cannot run the prebuilt Dart executable. Using the
+bootstrap Dart executable will make Debug builds long.
+Please see Wiki for instructions on replacing prebuilt Dart executable.
+
+https://code.google.com/p/dart/wiki/ReplacingPrebuiltDartExecutable
+
+"""
+
+def main():
+  # Parse the options.
+  parser = BuildArguments()
+  (options, args) = parser.parse_known_args()
+  if not ProcessOptions(options, args):
+    parser.print_help()
+    return 1
+  dart_executable = GetPrebuiltDartExecutablePath()
+  # If the system cannot execute the prebuilt dart executable, use the bootstrap
+  # executable instead.
+  if not TryRunningExecutable(dart_executable, options.package_root):
+    DisplayBootstrapWarning()
+    dart_executable = options.dart_executable
+  # If requested, use the bootstrap binary instead of the prebuilt
+  # executable.
+  if os.getenv('DART_USE_BOOTSTRAP_BIN') != None:
+    dart_executable = options.dart_executable
+  return RunPub(dart_executable, options.package_root, args)
+
+
+if __name__ == '__main__':
+  sys.exit(main());