ModifyRepo

Usage examples

modifyrepo bar rpms_sss/repodata/

• Add new record with type bar
• Add gz compressed file bar.gz into the repodata/ dir

modifyrepo --mdtype=foo bar rpms_sss/repodata/

• Add new record with type foo
• Add gz compressed file bar.gz into the repodata/ dir

Pitfalls of the classical Modifyrepo

• <open-size> element of the newly added record is missing (not generated at all).
• When adding already compressed file, the file is added uncompressed but its original compression suffix persists! (This is very confusing and in fact pretty illogical).
• Usage of --no-compress doesn't fix this misbehavior.
• --remove behavior depends on current working directory. When --remove is used, modifyrepo try to remove specified file by path that is stored in repomd.xml (e.g. repodata/primary.xml). So when modifyrepo is running from different working directory (e.g. one level up or directly in repodata/ dir) then although the record from repomd.xml is removed, the file physically still exists.
• --checksum with bad param (e.g. foo) causes modifyrepo crash with python traceback.
• When --no-compress is used, both <checksum> and <open-checksum> elements are present.
• The <open-checksum> shouldn't be there - See any metadata with groupfile (e.g. Fedora metadata). When metadata contains a compressed groupfile (type "group_gz") in most cases it contains also uncompressed groupfile (type "group") and record about this uncompressed file doesn't contain the <open-checksum> nor <open-size>

Proposed features of the Modifyrepo_c

• Autodetect compressed file and doesn't try to compress it again or even decompress it.
• Auto-detection if the simple or unique md filenames should be used.
• Support for batch file

Syntax of the batch file

Use GLib2 key file format.

Benefits of the format:

• Flexible and easy to extend
• Human-readable
• Computer-readable
• Standard and easy-to-use parser with UTF-8 support.
• Already used by several tools - Several freedesktop.org specifications use key files now, e.g the Desktop Entry Specification and the Icon Theme Specification.

Example

# Add:
#   [<path/to/file>]
#   <options>

# Metadata that use a bunch of config options
[some/path/comps.xml]
type=group
compress=true
compress-type=gz
unique-md-filenames=true
checksum=sha256
new-name=group.xml

# Metadata that use default settings
[some/path/bar.xml]

# Metadata that use default settings
# But path is specified by 'path' option
# Useful in cases when path itself contains '[' or ']' character(s)
[some text]
path=some/path/foo[2].xml

# Remove:
#   [<metadata name>]
#   remove=true

[updateinfo]
remove=true

Supported options

Option name	Description	Supported value(s)	Default
path	Path to the file. When specified it override the path specified in group name (name between [] parenthesis)	Any string	group name (string between '[' ']')
type	Type of the metadata	Any string	Based on filename
remove	Remove specified file/type from repodata	true or false	false
compress	Compress the new metadata before adding it to repo	true or false	true
compress-type	Compression format to use	gz, bz2, xz	gz
checksum	Checksum type to use	md5, sha, sha1, sha224, sha256, sha384, sha512	sha256
unique-md-filenames	Include the file's checksum in the filename	true or false	true
new-name	New name for the file. If compress is true, then compression suffix will be appended. If unique-md-filenames is true, then checksum will be prepended.	Any string	Original source filename

Notes

• Lines beginning with a '#' and blank lines are considered comments.
• If remove=true is used, all other config related to the record will be ignored.