CHANGELOG.rst

Changelog

in development

• Refactor retries in the Mistral action runner to use exponential backoff. Configuration options for Mistral have changed. (improvement)
• Add SSH bastion host support to the paramiko SSH runner. Utilizes same connection parameters as the targeted box. (new feature, improvement) #2144, #2150 [Logan Attwood]
• Improve speed of st2 execution list command by not requesting result and trigger_instance attributes. The effect of this change will be especially pronounced for installations with a lot of large executions (large execution for this purpose is an execution with a large result).
• Improve speed of st2 execution get command by not requesting result and trigger_instance attributes.
• Now when running st2api service in debug mode (--debug) flag, all the JSON responses are pretty indented.
• When using st2 execution list and st2 execution get CLI commands, display execution elapsed time in seconds for all the executions which are currently in "running" state.
• Update action chain runner so it performs on-success and on-error task name validation during pre_run time. This way common errors such as typos in the task names can be spotted early on since there is no need to wait for the run time.

1.1.0 - October 27, 2015

• Add YAQL v1.0 support to Mistral. Earlier versions are deprecated. (improvement)
• Update CLI so st2 run / st2 execution run and st2 execution re-run commands exit with non-zero code if the action fails. (improvement)
• Move st2auth service authentication backends to a "repo per backend" model. Backends are now also dynamically discovered and registered which makes it possible to easily create and use custom backends. For backward compatibility reasons, flat_file backend is installed And available by default. (new feature, improvement)
• New st2auth authentication backend for authenticating against LDAP servers - https://github.com/StackStorm/st2-auth-backend-ldap. (new feature)
• Default to rule being disabled if the user doesn't explicitly specify enabled attribute when creating a rule via the API or inside the rule metadata file when registering local content (previously it defaulted to enabled).
• Fix timestamp_lt and timestamp_gt filtering in the /executions API endpoint. Now we return a correct result which is expected from a user-perspective. (bug-fix)
• Enable Mistral workflow cancellation via st2 execution cancel. (improvement)
• Make sure that alias execution endpoint returns a correct status code and error message if the referenced action doesn't exist.
• Allow action-alias to be created and deleted from CLI.
• Allow user to select keystone backend in the st2auth service. (bug-fix)
• Fix packs.info action so it correctly exists with a non-zero status code if the pack doesn't exist or if it doesn't contain a valid .gitinfo file. (bug-fix)
• Fix packs.info action so it correctly searches all the packs base dirs. (bug-fix)
• Add support for --profile flag to all the services. When this flag is provided service runs in the profiling module which means all the MongoDB queries and query related profile data is logged. (new-feature)
• Introduce API Keys that do not expire like Authentication tokens. This makes it easier to work with webhook based integrations. (new-feature)
• Allow user to define trigger tags in sensor definition YAML files. (new feature) #2000 [Tom Deckers]
• Fix a bug in stdout and stderr consumption in paramiko SSH runner where reading a fixed chunk byte array and decoding it could result in multi-byte UTF-8 character being read half way resulting in UTF-8 decode error. This happens only when output is greater than default chunk size (1024 bytes) and script produces utf-8 output. We now collect all the bytes from channel and only then decode the byte stream as utf-8.
• Update CLI so it supports caching tokens for different users (it creates a different file for each user). This means you can now use ST2_CONFIG_FILE option without disabling token cache. (improvement)
• Cleanup timers and webhook trigger definitions once all rules referencing them are removed. (bug-fix)
• Enable pseudo tty when running remote SSH commands with the paramiko SSH runner. This is done to match existing Fabric behavior. (bug-fix)
• Fix CLI so it skips automatic authentication if credentials are provided in the config on "auth" command. (bug fix)
• Strip the last 'r' or 'rn' from both stdout and stderr streams from paramiko and local runner output. This is done to be compatible with fabric output of those streams. (bug-fix)
• Include parameters when viwewing output an execution on the CLI. (improvement)
• CLI renders parameters and output as yaml for better readability. (improvement)
• Set env variables (user provided and system assigned) before running remote command or script action with paramiko. (bug-fix)
• Fix a bug in Paramiko SSH runner where cwd could just be accessed in sudo mode but cd was outside scope of sudo in the command generated. Now, cd is inside the scope of sudo. (bug-fix)
• Fix a bug in Paramiko SSH runner where kwargs keys in script arguments were not shell injection safe. For example, kwarg key could contain spaces. (bug-fix)
• Fix a bug in Paramiko SSH runner where JSON output in stdout or stderr wasn't transformed to object automatically. (bug-fix)
• Paramiko SSH runner no longer runs a remote command with sudo if local user and remote user differ. (bug-fix)
• Fix a bug with the CLI token precedence - now the auth token specified as an environment variable or as a command line argument has precedence over credentials in the CLI config. (bug fix)
• Support versioned APIs for auth controller. For backward compatibility, unversioned API calls get redirected to versioned controllers by the server. (improvement)
• Add option to verify SSL cert for HTTPS request to the core.http action. (new feature)
• Update remote runner to include stdout and stderr which was consumed so far when a timeout occurs. (improvement)
• Fix st2-self-check script to check whether to use http/https when connecting to st2, to disable Windows test by default, and to check test status correctly. (bug-fix)
• Reduce the wait time between message consumption by TriggerWatcher to avoid latency (improvement)
• Use exclusive messaging Qs for TriggerWatcher to avoid having to deal with old messages and related migration scripts. (bug-fix)
• Allow user to specify value for the From field in the sendmail action by passing from parameter to the action. (improvement) [pixelrebel]
• Allow user to update / reinstall Python dependencies listed in requirements.txt inside the pack virtual environment by passing update=True parameter to packs.setup_virtualenv action or by using new packs.update_virtualenv action. (new feature) [jsjeannotte]
• Pack on install are now assigned an owner group. The pack_group property allows to pick this value and default is st2packs. (new feature)
• Make sure sensor container child processes (sensor instance processes) are killed and cleaned up if the sensor container is forcefully terminated (SIGKILL). (bug fix, improvement)

0.13.2 - September 09, 2015

• Private_key supplied for remote_actions is now used to auth correctly. private_key argument should be the contents of private key file (of user specified in username argument). (bug-fix)
• Last newline character ('n') is now stripped from stdout and stderr fields in local and remote command/shell runners. (improvement)
• Fix sensor container service so the config argument is correctly passed to the sensor instances in the system packs. Previously, this argument didn't get passed correctly to the FileWatchSensor from the system linux pack. (bug-fix)
• Make sure sensor processes correctly pick up parent --debug flag. This makes debugging a lot easier since user simply needs to start sensor container with --debug flag and all the sensor logs with level debug or higher will be routed to the container log. (improvement)

0.13.2 - September 09, 2015

• private_key supplied for remote_actions is now used to auth correctly. private_key argument should be the contents of private key file (of user specified in username argument). (bug-fix)
• Last newline character ('n') is now stripped from stdout and stderr fields in local and remote command/shell runners. (improvement)
• Fix sensor container service so the config argument is correctly passed to the sensor instances in the system packs. Previously, this argument didn't get passed correctly to the FileWatchSensor from the system linux pack. (bug-fix)
• Make sure sensor processes correctly pick up parent --debug flag. This makes debugging a lot easier since user simply needs to start sensor container with --debug flag and all the sensor logs with level debug or higher will be routed to the container log. (improvement)

0.13.1 - August 28, 2015

• cwd for paramiko script runner should use cwd provided as runner parameter. (bug-fix)
• Fix timer regression; bring brake broken timers. (bug-fix)
• Updates to trace objects are done via non-upsert updates by adding to the array. This makes it safer to update trace objects from multiple processes. (bug-fix)

0.13.0 - August 24, 2015

• Add new OpenStack Keystone authentication backend. [Itxaka Serrano]
• Information about parent workflow is now a dict in child's context field. (improvement)
• Fix a bug when some runner parameter default values where not overridden when a falsey value was used in the action metadata parameter override (e.g. False, 0). [Eugen C.]
• Correctly return 404 if user requests an invalid path which partially maps to an existing path. (bug-fix)
• Add support for restarting sensors which exit with a non-zero status code to the sensor container. Sensor container will now automatically try to restart (up to 2 times) sensor processes which die with a non-zero status code. (improvement)
• Support for RabbitMQ cluster. StackStorm works with a RabbitMQ cluster and switches nodes on failover. (feature)
• Add index to the ActionExecution model to speed up query. (improvement)
• Fix sort key in the ActionExecution API controller. (bug-fix)
• Introduce a Paramiko SSH runner that uses eventlets to run scripts or commands in parallel. (improvement) (experimental)
• Add action parameters validation to Mistral workflow on invocation. (improvement)
• Fix key name for error message in liveaction result. (bug-fix)
• Fix 500 API response when rule with no pack info is supplied. (bug-fix)
• Fix bug in trigger-instance re-emit (extra kwargs passed to manager is now handled). (bug-fix)
• Rename notification "channels" to "routes". (improvement)
• Make sure auth hook and middleware returns JSON and "Content-Type: application/json" header in every response. (improvement, bug-fix)
• Fix bug in triggers emitted on key value pair changes and sensor spawn/exit. When dispatching those triggers, the reference used didn't contain the pack names which meant it was invalid and lookups in the rules engine would fail. (bug-fix)
• Allow user to include files which are written on disk inside the action create API payload. (new feature)
• Allow user to retrieve content of a file inside a pack by using the new /packs/views/files/ API endpoint. (new feature)
• Handle sudo in paramiko remote script runner. (bug-fix)
• Turn on paramiko ssh runner as the default ssh runner in prod configuration. To switch to fabric runner, set use_paramiko_ssh_runner to false in st2.conf. (improvement)
• Add OpenStack Keystone authentication configuration for Mistral. (improvement)
• Abiltiy to add trace tag to TriggerInstance from Sensor. (feature)
• Ability to view trace in CLI with list and get commands. (feature)
• Add ability to add trace tag to st2 run CLI command. (feature)
• Add ability to specify trace id in st2 run CLI command. (feature)
• Update st2ctl to correctly start st2web even if even if Mistral is no installed. (bug-fix, improvement)
• Add X-Request-ID header to all API calls for easier debugging. (improvement)
• Add new CLI commands for disabling and enabling content pack resources ({sensor,action,rule} {enable, disable} <ref or id>) (feature)
• Fix a bug in handling positional arguments with spaces. (bug-fix)
• Make sure that the $PATH environment variable which is set for the sandboxed Python process contains "<virtualenv path>/bin" directory as the first entry. (bug fix)

0.12.2 - August 11, 2015

• Support local ssh config file in remote runners. (feature)
• Changes to htpasswd file used in flat_file auth backend do not require a restart of st2auth and consequently StackStorm. (feature)

0.12.1 - July 31, 2015

• Un-registering a pack also removes rules and action aliases from the pack. (bug-fix)
• Disable parallel SSH in fabric runner which causes issues with eventlets. (bug-fix)
• Fix executions stuck in running state if runner container throws exception. (bug-fix)
• Fix cases where liveaction result in dict are escaped and passed to Mistral. (bug-fix)

0.12.0 - July 20, 2015

• Add support for script arguments to the Windows script runner. (new feature) [James Sigurðarson]
• Allow user to filter executions on trigger instance id. [Sayli Karmarkar]
• By default the following environment variables are now available to the actions executed by local, remote and python runner: ST2_ACTION_API_URL, ST2_ACTION_AUTH_TOKEN. (new-feature)
• Jinja filter to make working with regex and semver possible in any place that support jinja (improvement)
• New experimental workflow runner based on the open-source CloudSlang project. (new-feature) [Eliya Sadan, Meir Wahnon, Sam Markowitz]
• Update all the code to handle all the datetime objects internally in UTC. (improvement, bug-fix)
• Allow users to use timediff_lt and timediff_gt rule comparison operator with many string date formats - previously it only worked with ISO8601 date strings. (improvement)
• Allow user to specify new secret attribute (boolean) for each action parameters. Values of parameters which have this attribute set to true will be masked in the log files. (new-feature)
• API server now gracefully shuts down on SIGINT (CTRL-C). (improvement)
• Fix a bug with with reinstalling a pack with no existing config - only try to move the config file over if it exists. (bug fix)
• Support for masking secret parameters in the API responses. Secret parameters can only be viewed through the API by admin users. (new-feature)
• Single sensor mode of Sensor Container uses --sensor-ref instead of --sensor-name.
• six library is now available by default in the Python sandbox to all the newly installed packs. (improvement)
• Dispatch an internal trigger when a datastore item has been created, updated, deleted and when it's value has changed. (new-feature)
• Fix a bug with st2 execution list CLI command throwing an exception on failed Mistral workflows. (bug-fix)
• Fix a bug with st2 execution list CLI command not displaying end_timestamp attribute for Mistral workflows. (bug-fix)
• Add new /v1/packs API endpoint for listing installed packs. (new-feature)
• Ability to partition sensors across sensor nodes using various partition schemes. (new-feature)
• Add ability to use action context params as action params in meta. (new-feature)
• Fix a bug in action container where rendering params was done twice. (bug-fix)
• Move /exp/actionalias/ and /exp/aliasexecution to /v1/actionalias/ and /v1/aliasexecution/ respectively. (upgrade)
• Display friendly message for error in parameters validation on action execution. (improvement)

0.11.6 - July 2, 2015

• Update all the code to handle all the datetime objects internally in UTC. (improvement, bug-fix)

0.11.5 - July 1, 2015

• Fix a bug where end_timestamp is not captured for Mistral workflow executions (bug-fix)
• Fix a bug where the CLI failed to display Mistral workflow that errored (bug-fix)
• Fix a bug where the published variables is not captured in the Mistral workflow result (bug-fix)

0.11.4 - June 30, 2015

• Remove unnecessary rule notify_hubot from core.

0.11.3 - June 16, 2015

• Fix RHEL6 packaging issues

0.11.2 - June 12, 2015

• Fix a bug with start_timestamp and end_timestamp sometimes returning an invalid value in a local instead of UTC timezone. (bug-fix)
• Fix to get PollingSensor working again. Sensors of type PollingSensor were not being treated as such and as a result would fail after the 1st poll. (bug-fix)

0.11.1 - June 8, 2015

• Action aliases are registered by default. (improvement)
• Repair failing pack installation. (bug-fix)

0.11.0 - June 5, 2015

• Allow user to configure the CLI using an ini style config file located at ~/.st2rc. (new-feature)
• Add support for caching of the retrieved auth tokens to the CLI. (new-feature)
• Throw a more-user friendly exception when enforcing a rule if an action referenced inside the rule definition doesn't exist. (improvement)
• Fix a bug with the rule evaluation failing if the trigger payload contained a key with a dot in the name. (bug-fix)
• Fix a bug with publishing array (list) values as strings inside the action chain workflows. (bug-fix)
• Update CLI so it displays the error at the top level when using run, execution run or execution get when executed workflow fails. (improvement)
• Action trigger now contains execution id as opposed to liveaction id. (bug-fix)
• Add new API endpoint for re-running an execution (POST /executions/<id>/re_run/). (new-feature)
• Rules should be part of a pack. (improvement)
• Update Windows runner code so it also works with a newer versions of winexe (> 1.0). (improvement) [James Sigurðarson]
• CLI now has get and list commands for triggerinstance. (new-feature)
• Validate parameters during rule creation for system triggers. (improvement)
• CLI now has re-emit command for triggerinstance. (new-feature)

v0.9.2 - May 26, 2015

• Fix broken packs.download action. (bug-fix)

v0.9.1 - May 12, 2015

• Allow option to bypass SSL Certificate Check (improvement)
• Fix a bug with alias parser to support empty formats (bug-fix)
• Return HTTP BAD REQUEST when TTL requested for token > Max configured TTL (improvement)

v0.9.0 - April 29, 2015

• Report a more user-friendly error if an action-chain task references an invalid or inexistent action. Also treat invalid / inexistent action as a top-level action-chain error. (improvement)
• Report a more user-friendly error if an action-chain definition contains an invalid type. (improvement)
• Enable authentication by default for package based installations.
• Rename all st2 processes to be prefixed by st2. (sensor_container is now st2sensorcontainer, rules_engine is now st2rulesengine, actionrunner is now st2actionrunner) (improvement)
• Return a user friendly error on no sensors found or typo in sensor class name in single sensor mode. (improvement)
• Sensor container now returns non-zero exit codes for errors. (bug-fix)
• Check if internal trigger types are already registered before registering them again. (improvement)
• Sensor container now can dynamically load/reload/unload sensors on data model changes. (new-feature)
• Fix a bug in datastore operations exposed in st2client. (bug-fix)
• Catch exception if rule operator functions throw excepton and ignore the rule. (bug-fix)
• Remove expected "runnertype not found" error logs on action registration in clean db. (improvement)
• Clean up rule registrar logging. (improvement)
• Add -t / --only-token flag to the st2 auth command. (new-feature)
• register param in packs.install should be passed to packs.load. (bug-fix)
• Fix validation code to validate value types correctly. (bug-fix)
• Add ability to best-effort cancel actions and actionchain via API. (new-feature)
• Add new windows-cmd and windows-script runners for executing commands and PowerShell scripts on Windows hosts. (new-feature)
• Update runner names so they follow a consistent naming pattern. For backward compatibility reasons, runners can still be referenced using their old names. (improvement)
• Update all the Python services to re-open log files on the SIGUSR1 signal. (new-feature)
• Internal trigger types registered using APIs should use auth token. (bug-fix)

v0.8.3 - March 23, 2015

• Don't allow run-remote-script actions without an entry_point attribute - throw an exception when running an action. (improvement)
• Fix packs.setup_virtualenv command so it works correctly if user specified multiple packs search paths. (bug-fix)
• Update sensor container to use auth.api_url setting when talking to the API (e.g. when accessing a datastore, etc.). This way it also works correctly if sensor container is running on a different host than the API. (bug-fix)

v0.8.2 - March 10, 2015

• Fix a bug with python-runner actions sometimes not correctly reporting the action's stdout. (bug-fix)
• Fix a bug in the run-remote-script runner - the runner ignored environment variables and authentication settings which were supplied to the action as parameters. (bug-fix)

v0.8.1 - March 10, 2015

Docs: http://docs.stackstorm.com/0.8/

• Allow user to exclude particular attributes from a response by passing ?exclude_attributes=result,trigger_instance query parameter to the /actionexecutions/ and /actionexecutions/<execution id>/ endpoint (new-feature)
• Add new /actionexecutions/<id>/attribute/<attribute name> endpoint which allows user to retrieve a value of a particular action execution attribute. (new-feature)
• Update execution get CLI command so it automatically detects workflows and returns more user-friendly output by default. (improvement)
• Update run, action execute, execution get and execution re-run CLI commands to take the same options and return output in the same consistent format.
• Fix a bug with http runner not parsing JSON HTTP response body if the content-type header also contained a charset. (bug-fix)
• Indent workflow children properly in CLI (bug-fix)
• Make sure that wait indicator is visible in CLI on some systems where stdout is buffered. (bug-fix)
• Fix a bug with end_timestamp attribute on the LiveAction and ActionExecution model containing an invalid value if the action hasn't finished yet. (bug-fix)
• Correctly report an invalid authentication information error in the remote runner. (bug-fix)
• Throw a more friendly error in the action chain runner if it fails to parse the action chain definition file. (improvement)
• Fix a bug in the action chain runner and make sure action parameters are also available for substitution in the publish scope. (bug-fix)

v0.8.0 - March 2, 2015

Docs: http://docs.stackstorm.com/0.8/

• Allow user to specify current working directory (cwd parameter) when running actions using the local or the remote runner (run-local, run-local-script, run-remote, run-remote-script). (new-feature)
• Default values of the parameter of an Action can be system values stored in kv-store. (new-feature)
• Allow users to specify additional paths where StackStorm looks for integration packs using packs_base_paths setting. (new-feature)
• Allow user to specify which Python binary to use for the Python runner actions using actionrunner.python_binary setting (new-feature)
• Default Python binary which is used by Python runner actions to be the Python binary which is used by the action runner service. Previous, system's default Python binary was used.
• Fix a race-condition / bug which would occur when multiple packs are installed at the same time. (bug-fix)
• Vars can be defined in the ActionChain. (new-feature)
• Node in an ActionChain can publish global variables. (new-feature)
• Allow user to provide authentication token either inside headers (X-Auth-Token) or via x-auth-token query string parameter. (new-feature)
• Allow actions without parameters. (bug-fix)
• Fix a bug with rule matching not working for any triggers with parameters. (bug-fix)
• Require cmd parameter for the following actions: core.remote, core.remote_sudo, core.local, core.local_sudo (bug-fix)
• Allow user to override authentication information (username, password, private key) on per action basis for all the remote runner actions. (new-feature)
• Allow user to pass --inherit-env flag to the st2 action run command which causes all the environment variables accessible to the CLI to be sent as env parameter to the action being executed. (new-feature)
• Cast params of an execution before scheduling in the RulesEngine. This allows non-string parameters in an action. (new-feature)
• Use QuerySet.count() instead of len(QuerySet) to avoid the caching of the entire result which improve running time of API request. (bug-fix)
• CLI commands to return non-zero exit codes for failed operations (new-feature)
• Fix a bug with template rendering, under some conditions, ending in an infinite loop. (bug-fix)
• Rename ActionExecution to LiveAction. (refactor)
• Rename ActionExecutionHistory to ActionExecution. (refactor)
• A separate history process is no longer required. ActionExecution updates are carried at time of update to LiveAction. (refactor)
• Add new nequals (neq) rule criteria operator. This criteria operator performs not equals check on values of an arbitrary type. (new-feature)
• Mistral subworkflows kicked off in st2 should include task name. (bug-fix)
• Add new execution re-run <execution id> CLI command for re-running an existing action. (new-feature)
• Dispatch an internal trigger when a sensor process is spawned / started (st2.sensor.process_spawn) and when a process exits / is stopped (st2.sensor.process_exit). (new-feature)
• Update HTTP runner to automatically parse JSON response body if Content-Type is application/json (new-feature)
• API url /v1/actionexecutions/ is now deprecated in favor of /v1/executions/ (refactor)
• API url change /v1/history/execution to /v1/executions (refactor)
• API url change /v1/history/execution/views/filters to /v1/executions/views/filters (refactor)
• POST to /v1/executions take LiveActionAPI but returns ActionExecutionAPI (refactor)
• Support for filtering by timestamp and status in executions list. (new-feature)
• Execution list shows only top level executions by default to see full list use --showall. (refactor)
• Ability to see child tasks of any execution. (new-feature)
• Allow sensors to manage global datastore items via sensor_service by passing local=False argument to the get_value, set_value and delete_value methods. (new-feature)
• Allow sensors to list datastore items using list_values sensor_service method. (new-feature)
• Allow users to filter datastore items by name prefix by passing ?prefix=<value> query parameter to the /keys endpoint. (new-feature)
• Fix non-string types to be rendered correctly in action parameters when used in rule. (bug-fix)
• Allow user to specify default value for required attributes in the definition of action parameters. (bug-fix)
• When running with auth enabled, correctly preserve the username of the authenticated user who has triggered the action execution. (bug-fix)

v0.7 - January 16, 2015

Docs: http://docks.stackstorm.com/0.7/

• Python runner and all the fabric based runners (run-local, run-local-script, run-remote, run-remote-script) now expose timeout argument. With this argument user can specify action timeout. Previously, the action timeout was not user-configurable and a system-wide default value was used.
• The time when an action execution has finished is now recorded and available via the end_timestamp attribute on the ActionExecution model.
• Status code 400 (bad request) is now returned if user doesn't provide a body to API endpoints which require it. Previously 500 internal server error was returned (bug-fix).
• Refactor local runners so they are more robust, efficient and easier to debug. Previously, local actions were executed through SSH, now they are executed directly without the overhead of SSH.
• Fix local runner so it correctly executes a command under the provider system user if user parameter is provided. (bug-fix)
• Fix a bug with a Trigger database object in some cases being created twice when registering a rule. (bug-fix)
• Fix a bug with child processes which run sensor code not being killed when stopping a sensor container service. (bug-fix)
• Fix a bug and allow user to use non-ascii (unicode) values in the parameter substitution values. (bug-fix)
• Allow polling sensors to retrieve current poll interval and change it using get_poll_interval and set_poll_interval methods respectively. (new-feature)
• Add support for a standalone mode to the st2auth service. In the standalone mode, authentication is handled inside the st2auth service using the defined backend. (new feature)
• Timer is not a sensor anymore. It is spun as part of rules_engine process (refactor)
• Fix a bug with action registration where action with invalid schema for parameters get registered. (bug-fix)
• Fix a bug with 'default' param values inheritance in runner/actions. (bug-fix)
• Add new rule criteria comparison operators: iequals, contains, icontains, ncontains, incontains, startswith, istartswith, endswith, iendswith (new-feature)
• Allow sensors to store temporary data in the datastore using the get_value, set_value and delete_value methods exposed by sensor_service. (new-feature)
• Allow user to specify TTL for datastore values by sending ttl attribute in the body of a PUT /keys/<key id> request. (new feature)
• Add new key delete_by_prefix --prefix=<prefix> client command. This command allows deletion of all the keys which name starts with the provided prefix. (new-feature)
• Add ability to attach tags to Action, Rule and TriggerType.
• Add ability to query results asynchronously from external services. (new-feature)
• Action models now use ContentPackResourceMixin so we can get them by ref. (refactor)
• Add rule_tester tool which allows users to test rules in an offline mode without any services running (new-feature)
• Fix a bug where trigger objects weren't created for triggers with different parameters. (bug-fix)
• st2api only requires st2common and dependencies defined in requirements to be available on the pythonpath thus making it possible to run st2api standalone.
• Add support for 'exists' and 'nexists' operators in rule criteria. (new-feature)
• Change default mode for authentication to standalone. (refactor)

v0.6.0 - December 8, 2014

Docs: http://docs.stackstorm.com/0.6.0/

• Separate virtualenv per pack. (Pythonic sensors and actions use them by default.)
• Install pip requirements from requiremets.txt in packs by default.
• Sensors are now run in their own process for isolation.
• Python Actions are now run in their own process for isolation.
• Add Sensor and PollingSensor base classes. (Sensors API change is non-backward compatible.)
• Separate out rules_engine into own process.
• YAML support for action, rules and chain meta.
• Add sensor meta support (JSON/YAML) to specify trigger types.
• Packs default path moves from /opt/stackstorm to /opt/stackstorm/packs/.
• Webhooks are not part of a sensor. They are now part of core API. (Authentication may be required.)
• API URLs are now versioned. All the existing paths have been prefixed with /v1 (e.g. /v1/actions).
• Audit log messages are now saved in a structured format as JSON in st2actionrunner.{pid}.audit.log log file.
• Numerous bug fixes.

v0.5.1 - November 3rd, 2014

Docs: http://docs.stackstorm.com/0.5.1/

• Initial public release