diff options
Diffstat (limited to 'u1db/commandline')
| -rw-r--r-- | u1db/commandline/__init__.py | 15 | ||||
| -rw-r--r-- | u1db/commandline/client.py | 497 | ||||
| -rw-r--r-- | u1db/commandline/command.py | 80 | ||||
| -rw-r--r-- | u1db/commandline/serve.py | 34 |
4 files changed, 626 insertions, 0 deletions
diff --git a/u1db/commandline/__init__.py b/u1db/commandline/__init__.py new file mode 100644 index 00000000..3f32e381 --- /dev/null +++ b/u1db/commandline/__init__.py @@ -0,0 +1,15 @@ +# Copyright 2011 Canonical Ltd. +# +# This file is part of u1db. +# +# u1db is free software: you can redistribute it and/or modify +# it under the terms of the GNU Lesser General Public License version 3 +# as published by the Free Software Foundation. +# +# u1db is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with u1db. If not, see <http://www.gnu.org/licenses/>. diff --git a/u1db/commandline/client.py b/u1db/commandline/client.py new file mode 100644 index 00000000..15bf8561 --- /dev/null +++ b/u1db/commandline/client.py @@ -0,0 +1,497 @@ +# Copyright 2011 Canonical Ltd. +# +# This file is part of u1db. +# +# u1db is free software: you can redistribute it and/or modify +# it under the terms of the GNU Lesser General Public License version 3 +# as published by the Free Software Foundation. +# +# u1db is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with u1db. If not, see <http://www.gnu.org/licenses/>. + +"""Commandline bindings for the u1db-client program.""" + +import argparse +import os +try: + import simplejson as json +except ImportError: + import json # noqa +import sys + +from u1db import ( + Document, + open as u1db_open, + sync, + errors, + ) +from u1db.commandline import command +from u1db.remote import ( + http_database, + http_target, + ) + + +client_commands = command.CommandGroup() + + +def set_oauth_credentials(client): + keys = os.environ.get('OAUTH_CREDENTIALS', None) + if keys is not None: + consumer_key, consumer_secret, \ + token_key, token_secret = keys.split(":") + client.set_oauth_credentials(consumer_key, consumer_secret, + token_key, token_secret) + + +class OneDbCmd(command.Command): + """Base class for commands operating on one local or remote database.""" + + def _open(self, database, create): + if database.startswith(('http://', 'https://')): + db = http_database.HTTPDatabase(database) + set_oauth_credentials(db) + db.open(create) + return db + else: + return u1db_open(database, create) + + +class CmdCreate(OneDbCmd): + """Create a new document from scratch""" + + name = 'create' + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('database', + help='The local or remote database to update', + metavar='database-path-or-url') + parser.add_argument('infile', nargs='?', default=None, + help='The file to read content from.') + parser.add_argument('--id', dest='doc_id', default=None, + help='Set the document identifier') + + def run(self, database, infile, doc_id): + if infile is None: + infile = self.stdin + db = self._open(database, create=False) + doc = db.create_doc_from_json(infile.read(), doc_id=doc_id) + self.stderr.write('id: %s\nrev: %s\n' % (doc.doc_id, doc.rev)) + +client_commands.register(CmdCreate) + + +class CmdDelete(OneDbCmd): + """Delete a document from the database""" + + name = 'delete' + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('database', + help='The local or remote database to update', + metavar='database-path-or-url') + parser.add_argument('doc_id', help='The document id to retrieve') + parser.add_argument('doc_rev', + help='The revision of the document (which is being superseded.)') + + def run(self, database, doc_id, doc_rev): + db = self._open(database, create=False) + doc = Document(doc_id, doc_rev, None) + db.delete_doc(doc) + self.stderr.write('rev: %s\n' % (doc.rev,)) + +client_commands.register(CmdDelete) + + +class CmdGet(OneDbCmd): + """Extract a document from the database""" + + name = 'get' + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('database', + help='The local or remote database to query', + metavar='database-path-or-url') + parser.add_argument('doc_id', help='The document id to retrieve.') + parser.add_argument('outfile', nargs='?', default=None, + help='The file to write the document to', + type=argparse.FileType('wb')) + + def run(self, database, doc_id, outfile): + if outfile is None: + outfile = self.stdout + try: + db = self._open(database, create=False) + except errors.DatabaseDoesNotExist: + self.stderr.write("Database does not exist.\n") + return 1 + doc = db.get_doc(doc_id) + if doc is None: + self.stderr.write('Document not found (id: %s)\n' % (doc_id,)) + return 1 # failed + if doc.is_tombstone(): + outfile.write('[document deleted]\n') + else: + outfile.write(doc.get_json() + '\n') + self.stderr.write('rev: %s\n' % (doc.rev,)) + if doc.has_conflicts: + self.stderr.write("Document has conflicts.\n") + +client_commands.register(CmdGet) + + +class CmdGetDocConflicts(OneDbCmd): + """Get the conflicts from a document""" + + name = 'get-doc-conflicts' + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('database', + help='The local database to query', + metavar='database-path') + parser.add_argument('doc_id', help='The document id to retrieve.') + + def run(self, database, doc_id): + try: + db = self._open(database, False) + except errors.DatabaseDoesNotExist: + self.stderr.write("Database does not exist.\n") + return 1 + conflicts = db.get_doc_conflicts(doc_id) + if not conflicts: + if db.get_doc(doc_id) is None: + self.stderr.write("Document does not exist.\n") + return 1 + self.stdout.write("[") + for i, doc in enumerate(conflicts): + if i: + self.stdout.write(",") + self.stdout.write( + json.dumps(dict(rev=doc.rev, content=doc.content), indent=4)) + self.stdout.write("]\n") + +client_commands.register(CmdGetDocConflicts) + + +class CmdInitDB(OneDbCmd): + """Create a new database""" + + name = 'init-db' + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('database', + help='The local or remote database to create', + metavar='database-path-or-url') + parser.add_argument('--replica-uid', default=None, + help='The unique identifier for this database (not for remote)') + + def run(self, database, replica_uid): + db = self._open(database, create=True) + if replica_uid is not None: + db._set_replica_uid(replica_uid) + +client_commands.register(CmdInitDB) + + +class CmdPut(OneDbCmd): + """Add a document to the database""" + + name = 'put' + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('database', + help='The local or remote database to update', + metavar='database-path-or-url'), + parser.add_argument('doc_id', help='The document id to retrieve') + parser.add_argument('doc_rev', + help='The revision of the document (which is being superseded.)') + parser.add_argument('infile', nargs='?', default=None, + help='The filename of the document that will be used for content', + type=argparse.FileType('rb')) + + def run(self, database, doc_id, doc_rev, infile): + if infile is None: + infile = self.stdin + try: + db = self._open(database, create=False) + doc = Document(doc_id, doc_rev, infile.read()) + doc_rev = db.put_doc(doc) + self.stderr.write('rev: %s\n' % (doc_rev,)) + except errors.DatabaseDoesNotExist: + self.stderr.write("Database does not exist.\n") + except errors.RevisionConflict: + if db.get_doc(doc_id) is None: + self.stderr.write("Document does not exist.\n") + else: + self.stderr.write("Given revision is not current.\n") + except errors.ConflictedDoc: + self.stderr.write( + "Document has conflicts.\n" + "Inspect with get-doc-conflicts, then resolve.\n") + else: + return + return 1 + +client_commands.register(CmdPut) + + +class CmdResolve(OneDbCmd): + """Resolve a conflicted document""" + + name = 'resolve-doc' + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('database', + help='The local or remote database to update', + metavar='database-path-or-url'), + parser.add_argument('doc_id', help='The conflicted document id') + parser.add_argument('doc_revs', metavar="doc-rev", nargs="+", + help='The revisions that the new content supersedes') + parser.add_argument('--infile', nargs='?', default=None, + help='The filename of the document that will be used for content', + type=argparse.FileType('rb')) + + def run(self, database, doc_id, doc_revs, infile): + if infile is None: + infile = self.stdin + try: + db = self._open(database, create=False) + except errors.DatabaseDoesNotExist: + self.stderr.write("Database does not exist.\n") + return 1 + doc = db.get_doc(doc_id) + if doc is None: + self.stderr.write("Document does not exist.\n") + return 1 + doc.set_json(infile.read()) + db.resolve_doc(doc, doc_revs) + self.stderr.write("rev: %s\n" % db.get_doc(doc_id).rev) + if doc.has_conflicts: + self.stderr.write("Document still has conflicts.\n") + +client_commands.register(CmdResolve) + + +class CmdSync(command.Command): + """Synchronize two databases""" + + name = 'sync' + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('source', help='database to sync from') + parser.add_argument('target', help='database to sync to') + + def _open_target(self, target): + if target.startswith(('http://', 'https://')): + st = http_target.HTTPSyncTarget.connect(target) + set_oauth_credentials(st) + else: + db = u1db_open(target, create=True) + st = db.get_sync_target() + return st + + def run(self, source, target): + """Start a Sync request.""" + source_db = u1db_open(source, create=False) + st = self._open_target(target) + syncer = sync.Synchronizer(source_db, st) + syncer.sync() + source_db.close() + +client_commands.register(CmdSync) + + +class CmdCreateIndex(OneDbCmd): + """Create an index""" + + name = "create-index" + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('database', help='The local database to update', + metavar='database-path') + parser.add_argument('index', help='the name of the index') + parser.add_argument('expression', help='an index expression', + nargs='+') + + def run(self, database, index, expression): + try: + db = self._open(database, create=False) + db.create_index(index, *expression) + except errors.DatabaseDoesNotExist: + self.stderr.write("Database does not exist.\n") + return 1 + except errors.IndexNameTakenError: + self.stderr.write("There is already a different index named %r.\n" + % (index,)) + return 1 + except errors.IndexDefinitionParseError: + self.stderr.write("Bad index expression.\n") + return 1 + +client_commands.register(CmdCreateIndex) + + +class CmdListIndexes(OneDbCmd): + """List existing indexes""" + + name = "list-indexes" + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('database', help='The local database to query', + metavar='database-path') + + def run(self, database): + try: + db = self._open(database, create=False) + except errors.DatabaseDoesNotExist: + self.stderr.write("Database does not exist.\n") + return 1 + for (index, expression) in db.list_indexes(): + self.stdout.write("%s: %s\n" % (index, ", ".join(expression))) + +client_commands.register(CmdListIndexes) + + +class CmdDeleteIndex(OneDbCmd): + """Delete an index""" + + name = "delete-index" + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('database', help='The local database to update', + metavar='database-path') + parser.add_argument('index', help='the name of the index') + + def run(self, database, index): + try: + db = self._open(database, create=False) + except errors.DatabaseDoesNotExist: + self.stderr.write("Database does not exist.\n") + return 1 + db.delete_index(index) + +client_commands.register(CmdDeleteIndex) + + +class CmdGetIndexKeys(OneDbCmd): + """Get the index's keys""" + + name = "get-index-keys" + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('database', help='The local database to query', + metavar='database-path') + parser.add_argument('index', help='the name of the index') + + def run(self, database, index): + try: + db = self._open(database, create=False) + for key in db.get_index_keys(index): + self.stdout.write("%s\n" % (", ".join( + [i.encode('utf-8') for i in key],))) + except errors.DatabaseDoesNotExist: + self.stderr.write("Database does not exist.\n") + except errors.IndexDoesNotExist: + self.stderr.write("Index does not exist.\n") + else: + return + return 1 + +client_commands.register(CmdGetIndexKeys) + + +class CmdGetFromIndex(OneDbCmd): + """Find documents by searching an index""" + + name = "get-from-index" + argv = None + + @classmethod + def _populate_subparser(cls, parser): + parser.add_argument('database', help='The local database to query', + metavar='database-path') + parser.add_argument('index', help='the name of the index') + parser.add_argument('values', metavar="value", + help='the value to look up (one per index column)', + nargs="+") + + def run(self, database, index, values): + try: + db = self._open(database, create=False) + docs = db.get_from_index(index, *values) + except errors.DatabaseDoesNotExist: + self.stderr.write("Database does not exist.\n") + except errors.IndexDoesNotExist: + self.stderr.write("Index does not exist.\n") + except errors.InvalidValueForIndex: + index_def = db._get_index_definition(index) + len_diff = len(index_def) - len(values) + if len_diff == 0: + # can't happen (HAH) + raise + argv = self.argv if self.argv is not None else sys.argv + self.stderr.write( + "Invalid query: " + "index %r requires %d query expression%s%s.\n" + "For example, the following would be valid:\n" + " %s %s %r %r %s\n" + % (index, + len(index_def), + "s" if len(index_def) > 1 else "", + ", not %d" % len(values) if len(values) else "", + argv[0], argv[1], database, index, + " ".join(map(repr, + values[:len(index_def)] + + ["*" for i in range(len_diff)])), + )) + except errors.InvalidGlobbing: + argv = self.argv if self.argv is not None else sys.argv + fixed = [] + for (i, v) in enumerate(values): + fixed.append(v) + if v.endswith('*'): + break + # values has at least one element, so i is defined + fixed.extend('*' * (len(values) - i - 1)) + self.stderr.write( + "Invalid query: a star can only be followed by stars.\n" + "For example, the following would be valid:\n" + " %s %s %r %r %s\n" + % (argv[0], argv[1], database, index, + " ".join(map(repr, fixed)))) + + else: + self.stdout.write("[") + for i, doc in enumerate(docs): + if i: + self.stdout.write(",") + self.stdout.write( + json.dumps( + dict(id=doc.doc_id, rev=doc.rev, content=doc.content), + indent=4)) + self.stdout.write("]\n") + return + return 1 + +client_commands.register(CmdGetFromIndex) + + +def main(args): + return client_commands.run_argv(args, sys.stdin, sys.stdout, sys.stderr) diff --git a/u1db/commandline/command.py b/u1db/commandline/command.py new file mode 100644 index 00000000..eace0560 --- /dev/null +++ b/u1db/commandline/command.py @@ -0,0 +1,80 @@ +# Copyright 2011 Canonical Ltd. +# +# This file is part of u1db. +# +# u1db is free software: you can redistribute it and/or modify +# it under the terms of the GNU Lesser General Public License version 3 +# as published by the Free Software Foundation. +# +# u1db is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with u1db. If not, see <http://www.gnu.org/licenses/>. + +"""Command infrastructure for u1db""" + +import argparse +import inspect + + +class CommandGroup(object): + """A collection of commands.""" + + def __init__(self, description=None): + self.commands = {} + self.description = description + + def register(self, cmd): + """Register a new command to be incorporated with this group.""" + self.commands[cmd.name] = cmd + + def make_argparser(self): + """Create an argparse.ArgumentParser""" + parser = argparse.ArgumentParser(description=self.description) + subs = parser.add_subparsers(title='commands') + for name, cmd in sorted(self.commands.iteritems()): + sub = subs.add_parser(name, help=cmd.__doc__) + sub.set_defaults(subcommand=cmd) + cmd._populate_subparser(sub) + return parser + + def run_argv(self, argv, stdin, stdout, stderr): + """Run a command, from a sys.argv[1:] style input.""" + parser = self.make_argparser() + args = parser.parse_args(argv) + cmd = args.subcommand(stdin, stdout, stderr) + params, _, _, _ = inspect.getargspec(cmd.run) + vals = [] + for param in params[1:]: + vals.append(getattr(args, param)) + return cmd.run(*vals) + + +class Command(object): + """Definition of a Command that can be run. + + :cvar name: The name of the command, so that you can run + 'u1db-client <name>'. + """ + + name = None + + def __init__(self, stdin, stdout, stderr): + self.stdin = stdin + self.stdout = stdout + self.stderr = stderr + + @classmethod + def _populate_subparser(cls, parser): + """Child classes should override this to provide their arguments.""" + raise NotImplementedError(cls._populate_subparser) + + def run(self, *args): + """This is where the magic happens. + + Subclasses should implement this, requesting their specific arguments. + """ + raise NotImplementedError(self.run) diff --git a/u1db/commandline/serve.py b/u1db/commandline/serve.py new file mode 100644 index 00000000..0bb0e641 --- /dev/null +++ b/u1db/commandline/serve.py @@ -0,0 +1,34 @@ +# Copyright 2011 Canonical Ltd. +# +# This file is part of u1db. +# +# u1db is free software: you can redistribute it and/or modify +# it under the terms of the GNU Lesser General Public License version 3 +# as published by the Free Software Foundation. +# +# u1db is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with u1db. If not, see <http://www.gnu.org/licenses/>. + +"""Build server for u1db-serve.""" + +from paste import httpserver + +from u1db.remote import ( + http_app, + server_state, + ) + + +def make_server(host, port, working_dir): + """Make a server on host and port exposing dbs living in working_dir.""" + state = server_state.ServerState() + state.set_workingdir(working_dir) + application = http_app.HTTPApp(state) + server = httpserver.WSGIServer(application, (host, port), + httpserver.WSGIHandler) + return server |