couchdiff

couchdiff

• http://github.com/mudynamics/couchdiff

DESCRIPTION

• Diff/Merge utility to compare & synchronize two databases (using couchrest).
• As this tool does not use the CouchDB replication protocol it can be used to transfer data between incompatible CouchDB versions and allows you to move data when replication fails.

FEATURES

• Compare all docs or only docs matching a design view (must be present in both source and dst)
• Pluggable comparison logic (by default couchdiff compares all fields excluding "_rev" and "rev_pos")
• Some initial optimizations to avoid copying attachments that did not change.

SYNOPSIS

• Usage: couchdiff [options] src-url dst-url
• s, --scope [SCOPE] name of couch view (e.g. User/all) used to limit scope of diff/merge.
• -f, --field [FIELD] json field used to compare docs (Default: Compare all fields except "_rev")
• -a, --apply Apply changes to destination DB (add, update and delete docs to match source DB)
• -c, --compact Compact destination DB after changes are applied.
• -v, --verbose List documents that were added, updated or deleted.
• -h, --help Display this screen

REQUIREMENTS

• couchrest, progressbar, json or json_pure
• hoe (to build the gem)

INSTALL

• Via RubyGems: gem install couchdiff
• Local installation: rake install_gem

TODOs

• Optimize attachment copying speed

LICENSE

(The MIT License)

Copyright (c) 2012 Mu Dynamics

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.