write_http: Allow to set empty metrics prefix in KAIROSDB format

[collectd.git] / src / collectd-python.pod

diff --git a/src/collectd-python.pod b/src/collectd-python.pod
index 0202b77..7a19f45 100644 (file)
--- a/src/collectd-python.pod
+++ b/src/collectd-python.pod
@@ -37,7 +37,7 @@ for collectd in Python. This is a lot more efficient than executing a
 Python-script every time you want to read a value with the C<exec plugin> (see
 L<collectd-exec(5)>) and provides a lot more functionality, too.
 
-The minimum required Python version is I<2.3>.
+The minimum required Python version is I<2.6>.
 
 =head1 CONFIGURATION
 
@@ -94,11 +94,12 @@ way of entering your commands. The daemonized collectd won't do that.
 
 =item *
 
-B<2.> collectd will block I<SIGINT>. Pressing I<Ctrl+C> will usually cause
+B<2.> Python will be handling I<SIGINT>. Pressing I<Ctrl+C> will usually cause
 collectd to shut down. This would be problematic in an interactive session,
-therefore this signal will be blocked. You can still use it to interrupt
-syscalls like sleep and pause but it won't generate a I<KeyboardInterrupt>
-exception either.
+therefore Python will be handling it in interactive sessions. This allows you
+to use I<Ctrl+C> to interrupt Python code without killing collectd. This also
+means you can catch I<KeyboardInterrupt> exceptions which does not work during
+normal operation.
 
 To quit collectd send I<EOF> (press I<Ctrl+D> at the beginning of a new line).
 
@@ -474,7 +475,7 @@ Methods defined here:
 
 =over 4
 
-=item B<dispatch>([type][, values][, plugin_instance][, type_instance][, plugin][, host][, time][, interval]) -> None.  Dispatch a value list.
+=item B<dispatch>([type][, message][, plugin_instance][, type_instance][, plugin][, host][, time][, severity][, meta]) -> None.  Dispatch a notification.
 
 Dispatch this instance to the collectd process. The object has members for each
 of the possible arguments for this method. For a detailed explanation of these
@@ -500,6 +501,16 @@ generated.
 The severity of this notification. Assign or compare to I<NOTIF_FAILURE>,
 I<NOTIF_WARNING> or I<NOTIF_OKAY>.
 
+=item meta
+
+These are the meta data for the Notification object.
+It has to be a dictionary of numbers, strings or bools. All keys must be
+strings. I<int> and I<long> objects will be dispatched as signed integers unless
+they are between 2**63 and 2**64-1, which will result in a unsigned integer.
+One of these storage classes can be forced by using the classes
+B<collectd.Signed> and B<collectd.Unsigned>. A meta object received by a
+notification callback will always contain B<Signed> or B<Unsigned> objects.
+
 =back
 
 =head1 FUNCTIONS
@@ -679,22 +690,6 @@ To register those functions with collectd:
 See the section L<"CLASSES"> above for a complete documentation of the data
 types used by the read, write and match functions.
 
-=head1 NOTES
-
-=over 4
-
-=item *
-
-Please feel free to send in new plugins to collectd's mailing list at
-E<lt>collectdE<nbsp>atE<nbsp>collectd.orgE<gt> for review and, possibly,
-inclusion in the main distribution. In the latter case, we will take care of
-keeping the plugin up to date and adapting it to new versions of collectd.
-
-Before submitting your plugin, please take a look at
-L<http://collectd.org/dev-info.shtml>.
-
-=back
-
 =head1 CAVEATS
 
 =over 4
@@ -732,7 +727,7 @@ dispatched by the python plugin after upgrades.
 =item *
 
 Not all aspects of the collectd API are accessible from Python. This includes
-but is not limited to filters and data sets.
+but is not limited to filters.
 
 =back