X-Git-Url: https://code.grnet.gr/git/snf-image-creator/blobdiff_plain/1377b8a73a91437cc4a51e91afadd30deb783a19..aa486e935452c7120582057caf9db0c77b88d68a:/image_creator/main.py

diff --git a/image_creator/main.py b/image_creator/main.py
index 7040931..567e4c3 100644
--- a/image_creator/main.py
+++ b/image_creator/main.py
@@ -1,4 +1,6 @@
-# Copyright 2011 GRNET S.A. All rights reserved.
+#!/usr/bin/env python
+
+# Copyright 2012 GRNET S.A. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or
 # without modification, are permitted provided that the following
@@ -31,28 +33,297 @@
 # interpreted as representing official policies, either expressed
 # or implied, of GRNET S.A.
 
+from image_creator import __version__ as version
+from image_creator import util
 from image_creator.disk import Disk
+from image_creator.util import FatalError, MD5
+from image_creator.output.cli import SilentOutput, SimpleOutput, \
+    OutputWthProgress
+from image_creator.os_type import os_cls
+from image_creator.kamaki_wrapper import Kamaki, ClientError
 import sys
 import os
+import optparse
+import StringIO
+import signal
 
-def main():
-    if len(sys.argv) != 3:
-        sys.exit("Usage: %s <source> <output_file>" %
-                        os.path.basename(sys.argv[0]))
-    source = sys.argv[1]
-    dest = sys.argv[2]
 
-    disk = Disk(source)
+def check_writable_dir(option, opt_str, value, parser):
+    dirname = os.path.dirname(value)
+    name = os.path.basename(value)
+    if dirname and not os.path.isdir(dirname):
+        raise FatalError("`%s' is not an existing directory" % dirname)
+
+    if not name:
+        raise FatalError("`%s' is not a valid file name" % dirname)
+
+    setattr(parser.values, option.dest, value)
+
+
+def parse_options(input_args):
+    usage = "Usage: %prog [options] <input_media>"
+    parser = optparse.OptionParser(version=version, usage=usage)
+
+    token = os.environ["OKEANOS_TOKEN"] if "OKEANOS_TOKEN" in os.environ \
+        else None
+
+    parser.add_option("-o", "--outfile", type="string", dest="outfile",
+                      default=None, action="callback",
+                      callback=check_writable_dir, help="dump image to FILE",
+                      metavar="FILE")
+
+    parser.add_option("-f", "--force", dest="force", default=False,
+                      action="store_true",
+                      help="overwrite output files if they exist")
+
+    parser.add_option("-s", "--silent", dest="silent", default=False,
+                      help="output only errors",
+                      action="store_true")
+
+    parser.add_option("-u", "--upload", dest="upload", type="string",
+                      default=False,
+                      help="upload the image to pithos with name FILENAME",
+                      metavar="FILENAME")
+
+    parser.add_option("-r", "--register", dest="register", type="string",
+                      default=False,
+                      help="register the image with ~okeanos as IMAGENAME",
+                      metavar="IMAGENAME")
+
+    parser.add_option("-m", "--metadata", dest="metadata", default=[],
+                      help="add custom KEY=VALUE metadata to the image",
+                      action="append", metavar="KEY=VALUE")
+
+    parser.add_option("-t", "--token", dest="token", type="string",
+                      default=token, help="use this authentication token when "
+                      "uploading/registering images [Default: %s]" % token)
+
+    parser.add_option("--print-sysprep", dest="print_sysprep", default=False,
+                      help="print the enabled and disabled system preparation "
+                      "operations for this input media", action="store_true")
+
+    parser.add_option("--enable-sysprep", dest="enabled_syspreps", default=[],
+                      help="run SYSPREP operation on the input media",
+                      action="append", metavar="SYSPREP")
+
+    parser.add_option("--disable-sysprep", dest="disabled_syspreps",
+                      help="prevent SYSPREP operation from running on the "
+                      "input media", default=[], action="append",
+                      metavar="SYSPREP")
+
+    parser.add_option("--no-sysprep", dest="sysprep", default=True,
+                      help="don't perform any system preparation operation",
+                      action="store_false")
+
+    parser.add_option("--no-shrink", dest="shrink", default=True,
+                      help="don't shrink any partition", action="store_false")
+
+    parser.add_option("--public", dest="public", default=False,
+                      help="register image with cyclades as public",
+                      action="store_true")
+
+    parser.add_option("--tmpdir", dest="tmp", type="string", default=None,
+                      help="create large temporary image files under DIR",
+                      metavar="DIR")
+
+    options, args = parser.parse_args(input_args)
+
+    if len(args) != 1:
+        parser.error('Wrong number of arguments')
+
+    options.source = args[0]
+    if not os.path.exists(options.source):
+        raise FatalError("Input media `%s' is not accessible" % options.source)
+
+    if options.register and not options.upload:
+        raise FatalError("You also need to set -u when -r option is set")
+
+    if options.upload and options.token is None:
+        raise FatalError(
+            "Image uploading cannot be performed. "
+            "No authentication token is specified. Use -t to set a token")
+
+    if options.tmp is not None and not os.path.isdir(options.tmp):
+        raise FatalError("The directory `%s' specified with --tmpdir is not "
+                         "valid" % options.tmp)
+
+    meta = {}
+    for m in options.metadata:
+        try:
+            key, value = m.split('=', 1)
+        except ValueError:
+            raise FatalError("Metadata option: `%s' is not in KEY=VALUE "
+                             "format." % m)
+        meta[key] = value
+    options.metadata = meta
+
+    return options
+
+
+def image_creator():
+    options = parse_options(sys.argv[1:])
+
+    if options.outfile is None and not options.upload and not \
+            options.print_sysprep:
+        raise FatalError("At least one of `-o', `-u' or `--print-sysprep' "
+                         "must be set")
+
+    if options.silent:
+        out = SilentOutput()
+    else:
+        out = OutputWthProgress(True) if sys.stderr.isatty() else \
+            SimpleOutput(False)
+
+    title = 'snf-image-creator %s' % version
+    out.output(title)
+    out.output('=' * len(title))
+
+    if os.geteuid() != 0:
+        raise FatalError("You must run %s as root"
+                         % os.path.basename(sys.argv[0]))
+
+    if not options.force and options.outfile is not None:
+        for extension in ('', '.meta', '.md5sum'):
+            filename = "%s%s" % (options.outfile, extension)
+            if os.path.exists(filename):
+                raise FatalError("Output file %s exists "
+                                 "(use --force to overwrite it)" % filename)
+
+    # Check if the authentication token is valid. The earlier the better
     try:
-        dev = disk.get_device()
-        metadata = dev.get_image_metadata()
-        for key, val in metadata.iteritems():
-            print "%s=%s" % (key,val)
+        account = Kamaki.get_account(options.token)
+        if account is None:
+            raise FatalError("The authentication token you provided is not "
+                             "valid!")
+    except ClientError as e:
+        raise FatalError("Astakos client: %d %s" % (e.status, e.message))
+
+    disk = Disk(options.source, out, options.tmp)
+
+    def signal_handler(signum, frame):
+        disk.cleanup()
+
+    signal.signal(signal.SIGINT, signal_handler)
+    signal.signal(signal.SIGTERM, signal_handler)
+    try:
+        snapshot = disk.snapshot()
+
+        dev = disk.get_device(snapshot)
+
+        # If no customization is to be applied, the image should be mounted ro
+        readonly = (not (options.sysprep or options.shrink) or
+                    options.print_sysprep)
+        dev.mount(readonly)
+
+        cls = os_cls(dev.distro, dev.ostype)
+        image_os = cls(dev.root, dev.g, out)
+        out.output()
+
+        for sysprep in options.disabled_syspreps:
+            image_os.disable_sysprep(image_os.get_sysprep_by_name(sysprep))
+
+        for sysprep in options.enabled_syspreps:
+            image_os.enable_sysprep(image_os.get_sysprep_by_name(sysprep))
+
+        if options.print_sysprep:
+            image_os.print_syspreps()
+            out.output()
+
+        if options.outfile is None and not options.upload:
+            return 0
+
+        if options.sysprep:
+            image_os.do_sysprep()
+
+        metadata = image_os.meta
+        dev.umount()
+
+        size = options.shrink and dev.shrink() or dev.size
+        metadata.update(dev.meta)
+
+        # Add command line metadata to the collected ones...
+        metadata.update(options.metadata)
+
+        md5 = MD5(out)
+        checksum = md5.compute(snapshot, size)
+
+        metastring = '\n'.join(
+            ['%s=%s' % (key, value) for (key, value) in metadata.items()])
+        metastring += '\n'
+
+        if options.outfile is not None:
+            dev.dump(options.outfile)
+
+            out.output('Dumping metadata file ...', False)
+            with open('%s.%s' % (options.outfile, 'meta'), 'w') as f:
+                f.write(metastring)
+            out.success('done')
+
+            out.output('Dumping md5sum file ...', False)
+            with open('%s.%s' % (options.outfile, 'md5sum'), 'w') as f:
+                f.write('%s %s\n' % (checksum,
+                                     os.path.basename(options.outfile)))
+            out.success('done')
+
+        # Destroy the device. We only need the snapshot from now on
+        disk.destroy_device(dev)
+
+        out.output()
+        try:
+            uploaded_obj = ""
+            if options.upload:
+                out.output("Uploading image to pithos:")
+                kamaki = Kamaki(account, out)
+                with open(snapshot, 'rb') as f:
+                    uploaded_obj = kamaki.upload(
+                        f, size, options.upload,
+                        "(1/4)  Calculating block hashes",
+                        "(2/4)  Uploading missing blocks")
+
+                out.output("(3/4)  Uploading metadata file ...", False)
+                kamaki.upload(StringIO.StringIO(metastring),
+                              size=len(metastring),
+                              remote_path="%s.%s" % (options.upload, 'meta'))
+                out.success('done')
+                out.output("(4/4)  Uploading md5sum file ...", False)
+                md5sumstr = '%s %s\n' % (checksum,
+                                         os.path.basename(options.upload))
+                kamaki.upload(StringIO.StringIO(md5sumstr),
+                              size=len(md5sumstr),
+                              remote_path="%s.%s" % (options.upload, 'md5sum'))
+                out.success('done')
+                out.output()
+
+            if options.register:
+                img_type = 'public' if options.public else 'private'
+                out.output('Registering %s image with ~okeanos ...' % img_type,
+                           False)
+                kamaki.register(options.register, uploaded_obj, metadata,
+                                options.public)
+                out.success('done')
+                out.output()
+        except ClientError as e:
+            raise FatalError("Pithos client: %d %s" % (e.status, e.message))
+
     finally:
+        out.output('cleaning up ...')
         disk.cleanup()
 
+    out.success("snf-image-creator exited without errors")
+
+    return 0
+
+
+def main():
+    try:
+        ret = image_creator()
+        sys.exit(ret)
+    except FatalError as e:
+        colored = sys.stderr.isatty()
+        SimpleOutput(colored).error(e)
+        sys.exit(1)
+
 if __name__ == '__main__':
     main()
 
 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :
-