Graphite-api

-------------------

* Remove extra parenthesis from ``aliasByMetric()``.
* Fix leap year handling in ``graphite_api.render.attime``.
* Allow colon and hash in node names in ``aliasByNode()``
* Fix calling ``reduceFunction`` in ``reduceSeries``
* Revert a whisper patch which broke multiple retentions handling.
* Specify which function is invalid when providing an invalid consolidation
function.

-------------------

* Fix regression in multi fetch handling: paths were queried multiple times,
leading to erroneous behaviour and slowdown.
* Continue on IndexError in ``remove{Above,Below}Percentile`` functions.

-------------------

* Fix ``areaMode=stacked``.

* Fix error when calling functions that use ``fetchWithBootstrap`` and the
bootstrap range isn't available (fill with nulls instead).

-----------------

* Add CarbonLink support.

* Add support for configuring a cache backend and the ``noCache`` and
``cacheTimeout`` API options.

* When no timezone is provided in the configuration file, try to guess from
the system's timezone with a fallback to UTC.

* Now supporting Flask >= 0.8 and Pyparsing >= 1.5.7.

* Add support for ``fetch_multi()`` in storage finders. This is useful for
database-backed finders such as Cyanite because it allows fetching all time
series at once instead of sequentially.

* Add ``multiplySeriesWithWildcards``, ``minimumBelow``, ``changed``,
``timeSlice`` and ``removeEmptySeries`` functions.

* Add optional ``step`` argument to ``time``, ``sin`` and ``randomWalk``
functions.

* Add ``/metrics`` API call as an alias to ``/metrics/find``.

* Add missing ``/metrics/index.json`` API call.

* Allow wildcards origins (``*``) in CORS configuration.

* Whisper finder now logs debug information.

* Fix parsing dates such as "feb27" during month days > 28.

* Change ``sum()`` to return ``null`` instead of 0 when all series' datapoints
are null at the same time. This is graphite-web's behavior.

* Extract paths of all targets before fetching data. This is a significant
optimization for storage backends such as Cyanite that allow bulk-fetching
metrics.

* Add JSONP support to all API endpoints that can return JSON.

* Fix 500 error when generating a SVG graph without any data.

* Return tracebacks in the HTTP response when app errors occur. This behavior
can be disabled in the configuration.

* Fixes for the following graphite-web issues:

* `639 <https://github.com/graphite-project/graphite-web/issues/639>`_ --
proper timezone handling of ``from`` and ``until`` with client-supplied
timezones.
* `540 <https://github.com/graphite-project/graphite-web/issues/540>`_ --
provide the last data point when rendering to JSON format.
* `381 <https://github.com/graphite-project/graphite-web/issues/381>`_ --
make ``areaBetween()`` work either when passed 2 arguments or a single
wildcard series of length 2.
* `702 <https://github.com/graphite-project/graphite-web/pull/702>`_ --
handle backslash as path separator on windows.
* `410 <https://github.com/graphite-project/graphite-web/pull/410>`_ -- SVG
output sometimes had an extra ``</g>`` tag.

-------------------

* ``time_zone`` set to UTC by default instead of Europe/Berlin.
* Properly log app exceptions.
* Fix constantLine for python 3.
* Create whisper directories if they don't exist.
* Fixes for the following graphite-web issues:

* `645 <https://github.com/graphite-project/graphite-web/pull/645>`_, `625
<https://github.com/graphite-project/graphite-web/issues/625>`_ -- allow
``constantLine`` to work even if there are no other targets in the graph.

with the following modifications:

* New ``/index`` API endpoint for re-building the index (replaces the
build-index command-line script from graphite-web).

* Removal of memcache integration.

* Removal of Pickle integration.

* Removal of remote rendering.

* Support for Python 3.

* A lot more tests and test coverage.

* Fixes for the following graphite-web issues:

* (meta) `647 <https://github.com/graphite-project/graphite-web/issues/647>`_
-- strip out the API from graphite-web.
* `665 <https://github.com/graphite-project/graphite-web/pull/665>`_ --
address some DeprecationWarnings.
* `658 <https://github.com/graphite-project/graphite-web/issues/658>`_ --
accept a float value in ``maxDataPoints``.
* `654 <https://github.com/graphite-project/graphite-web/pull/654>`_ --
ignore invalid ``logBase`` values (<=1).
* `591 <https://github.com/graphite-project/graphite-web/issues/591>`_ --
accept JSON data additionaly to querystring params or form data.