Name

SVN::Notify::Alternative - MIME multipart/alternative notification

Synopsis

Use svnnotify in post-commit:

  svnnotify --repos-path "$1" --revision "$2" \
    --to developers@example.com --handler Alternative [options]

For example:

  svnnotify --repos-path "$1" --revision "$2" \
    --to developers@example.com --handler Alternative \
    --alternative HTML::ColorDiff

Use the class in a custom script:

  use SVN::Notify::Alternative;

  my $notifier = SVN::Notify::Alternative->new(%params);
  $notifier->prepare;
  $notifier->execute;

Description

This subclass of SVN::Notify sends MIME multipart/alternative email messages for Subversion activity. The messages contain both the standard SVN::Notify plain text change notification and one or more alternative formats of the message. The default alternative format is HTML.

Note that this means that many or all of the processing of a subversion commit will be executed multiple times, once for the plain text version and then again for each alternative version. This will therefore increase resource usage on your Subversion server (mainly processor time, but also possibly memory).

It also means that the size of the outgoing message will increase for each alternative. If you're using "--with-diff", then those messages could be very large indeed for large commits. If, however, you use "--attach-diff", the diff will only be attached to the last alternative.

Usage

To use SVN::Notify::Alternative, simply follow the instructions in SVN::Notify, but when using svnnotify, use the "--alternative" option to add one or more alternative formats.

Class Interface

Constructor

new

  my $notifier = SVN::Notify::Alternative->new(%params);

Constructs and returns a new SVN::Notify object. All parameters supported by SVN::Notity are supported here, as are the options of all specified alternative formats, but SVN::Notify::Alternative supports an additional parameter:

alternatives

  svnnotify --alternative HTML
  svnnotify --alt HTML --alt HTML::ColorDiff

An array reference that specifies the SVN::Notify handlers (subclasses) to be used for formatting the alternative parts of the notification message. The command-line option may be called as either "--alternative" or "--alt", and the value is the same as that of the SVN::Notify "--handler" parameter, i.e. the module name without the "SVN::Notify::" prefix. Specify the option multiple times to specify multiple alternative handlers. Defaults to "['HTML']" if not specified.

Instance Interface

Instance Methods

output

  $notifier->output($file_handle);

Overrides the "output()" method of SVN::Notify to replace the standard message output with a MIME "multipart/alternative" skeleton. It then creates new instances of the standard SVN::Notify plain text formatter and each of the configured alternative formatters, and uses those instances to fill in the alternative parts of the message. If "attach_diff" is true, it will be used only in the last alternative to be output, which should also be the richest format.

Accessors

In addition to those supported by SVN::Notify, SVN::Notify::Alternative supports the following accessors:

alternatives

  my $alts = $notify->alternatives;
  $notify->alternatives($alts);

Gets or sets the value of the "alternatives" attribute, which must always be set to an array reference.

Authors

Jukka Zitting <jz@yukatan.fi>

David E. Wheeler <david@justatheory.com>

Copyright and License

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.