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CHANGELOG.md

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Changelog for Stealth v2.0.0

Enhancements

  • Added support for Ruby 3.0
  • [Controllers] Added support for Dev Jumping. This feature allows developers to jump around flows and states for bot's in development.
  • [NLP] Added base classes for Stealth::Nlp::Result and Stealth::Nlp::Client to be used by NLP drivers.
  • [Controllers] Scheduled replies no longer call controller.route when they run. Instead we step_to to the flow and state directly. This ensures the route is reserved for incoming messages.
  • [Catch All] Backtrace logging has been improved. The error message is now included first in the backtrace.
  • [Logger] The thread's ID (TID) is now included in every logging entry preceding the log type, ie "[facebook]"
  • [Interrupt] Interrupt detection has been added. See the docs for more info on this feature.
  • [Controllers] When user's flow is set to catch_all or interrupt, Stealth will ignore incoming messages. If you have interactive states in either of these controllers, you will need to move those interactions to a different controller.
  • [Sessions] Sessions can now be cleared by calling session.clear_session. Clearing a session removes the key from Redis.
  • [Logging] primary_session, previous_session, and back_to_session now explicitly logged
  • [Sessions] The session is no longer set on update or stepping witht destination flow and state match the existing session.
  • [Scheduled Replies] The service_message.target_id is now set for scheduled replies. NOTE: scheduled replies that are already enqueued will NOT have this set.
  • [Server] Updated to Puma 6.x
  • [Server] Updated to Sidekiq 7.x
  • [Server] Updated to Sinatra 3.x
  • [Sessions] Added to_s for sessions to pretty print the slug. Useful when debugging.
  • send_reples now supports two additional options for replies: send_replies(custom_reply: 'hello/say_hello') send_replies(inline: [])
  • Dynamic delays for SMS platforms do not delay at the beginning of a reply.
  • Added support for Bandwidth SMS
  • The ServiceMessage (current_message) now contains a target_id. This can be set by the platform driver to provide more information about the intended target of a message.
  • [Controller] Added a do_nothing method that prevents catch_all from firing when a controller action doesn't send replies nor progresses the session.
  • [Replies] If text and speech replies are specified as an Array, Stealth will now randomize the selected text.
  • [Generators] Added sample payload handling to generated bots since it can be tricky.
  • [Generators] Added inflections.rb to generators since we rely on ActiveSupport::Inflector to derive flow and controller names.
  • [Sessions] previous_session log entries now appear below current_session entries.
  • [Logging] Add option, Stealth.config.transcript_logging, to log incoming and outgoing messages.
  • [Server] The only HTTP header passed along to handle_message_job is now HTTP_HOST.
  • [Controllers] Added set_back_to and step_back to allow user specified "redirect back". Useful for multi-state transitions that would otherwise not be possible with just previous_session.
  • [Configuration] Stealth::Configuration now returns nil for a configuration option that is missing. It still returns a NoMethodError if attempting to access a key from a parent node that is also missing.
  • [Reloading] Bots in development mode now hot reload! It's no longer necessary to stop your local server.
  • [Production] Production bots now eager load bot code to improve copy-on-write performance. The puma.rb config has been updated with instructions for multiple workers.
  • [Flows] You can now specify custom options when defining states. These options can later be accessed via the flow specification.
  • [CoreExt] Added a String#without_punctuation method. Removes a lot of common punctuation.
  • [CoreExt] String#normalize no longer removes quotation marks.
  • [Controllers] Alpha ordinal checks are now done against a "normalized" string without punctuation. See above.
  • [Controllers] normalized_msg and homophone_translated_msg are now memoized for performance.
  • [Errors] Stealth::Errors::MessageNotRecognized has been renamed to Stealth::Errors::UnrecognizedMessage
  • [Controllers] When handle_message or get_match raise a Stealth::Errors::UnrecognizedMessage, the user is first routed to a new UnrecognizedMessagesController to perform NLP. If that controller fails to match, the catch_all is run as normal.
  • [Errors] Client errors now call respective BotController actions: handle_opt_out, handle_invalid_session_id, handle_message_filtered, handle_unknown_error. Each client is responsible for raising Stealth::Errors::UserOptOut, Stealth::Errors::InvalidSessionId, Stealth::Errors::MessageFiltered, Stealth::Errors::UnknownError errors, respectively.
  • [Controllers] handle_message and get_match now detect homophones for alpha ordinals (A-Z)
  • [Controllers] handle_message and get_match now ignore single and double quotes for alpha-ordinals
  • [CoreExt] Strings now have a normalize method for removing padding and quotes
  • [Controllers] Improved logging when UnrecognizedMessagesController runs.
  • [Controllers] State transitions (via step_to, update_session_to, step_to_at, step_to_in, and set_back_to) now accept a session slug argument.
  • [Replies] Added support for sub-state replies. step_to can now take a pos argument that will force any resulting send_replies to be sent starting at the pos specified. pos can also be negative, for example, -1 will force send_replies to send replies starting at (only) the last reply.
  • [Replies] Dynamic delays are automatically sent before each reply. This can be disabled by setting Stealth.config.auto_insert_delays to false. If a delay is already included, the auto-delay is skipped.
  • [Controllers] handle_message now supports Regexp keys.
  • [Configuration] database.yml is now parsed with ERB in order to support environment variables. Thanks @malkovro.
  • [Replies] Speech and SSML replies now use speech and ssml as keys, respectively, instead of text
  • [Replies] Voice services (determined by having "voice" in the name) now automatically skip auto-delays.
  • [Controllers] current_message now has a confidence attribute containing a float with the confidence value of the transcription (from 0 to 1).
  • [Controllers] Added a halt! method that can be used with the controller error handlers to stop code execution.
  • [Logger] If the driver makes the translated_reply instance variable available, it will now be logged.

Bug Fixes

  • [Catch All] Errors triggered within CatchAlls no longer trigger a CatchAll. They are simply ignored. This prevents infinite looping scenarios.
  • [Interrupt] If CatchAll runs and doesn't step_to, it releases the session lock.
  • [Controller] Messages are no longer ignored in CatchAll and Interrupt controllers
  • [Interrupts] After send_replies, we now release the session lock. This ensures replies that send buttons can properly receive responses from them.
  • Callbacks specified in child controllers of BotController where not being called during step_to. While the fix was small, we've bumped the minor release to ensure this fix does not break existing codebases.
  • Fixed another bug loading replies from a custom_reply path in send_replies
  • Fixed bug loading replies from a custom_reply path in send_replies
  • Leading dynamic delays in a reply are not sent again on SMS platforms.
  • [Sessions] Sessions retrieved when session expiration was enabled would return as an Array rather than a slug.
  • [Sessions] previous_session now respects session_ttl values.
  • [Catch All] Log output from all catch_all logging now includes the session_id so they can be included in log searches.
  • [NLP] Strip out values from single element arrays in the case of custom LUIS List entities.
  • [Config] Attempting to overwrite default config values with nil or false now correctly sets those config values.
  • [Server] Added support for Bandwidth respones. (thanks @emorissettegregoire)

Deprecations

  • [Controllers] current_user_id has now been completely removed since becoming deprecated in 1.1.0.
  • [Ruby] MRI 2.4 is no longer supported as we depend on ActiveSupport 6.0 now. Rails 6.0 only supports Ruby MRI 2.5+.

Changelog for Stealth v1.1.5

Enhancements

  • [Replies] Replies will now always send the sender_id that came in to the service drivers. This ensures current_session_id hasn't been modified which would cause replies to fail to send.

Changelog for Stealth v1.1.4

Bug Fixes

  • [General] Fixed controller and model concern load order. Previously files in the concerns folder were not loading before their respective controllers or models causing LoadErrors.

Changelog for Stealth v1.1.3

Bug Fixes

  • [Server] Additional CONTENT_TYPE fixes that would cause the server to 500 when it was missing.

Changelog for Stealth v1.1.2

Bug Fixes

  • [Server] Handle cases where CONTENT_TYPE is missing from incoming requests.

Enhancements

  • [CI] Added Ruby 2.6 to build.

Changelog for Stealth v1.1.1

Bug Fixes

  • [Server] Does not auto-return an HTTP 202. Leaves it up to the drivers again.

Changelog for Stealth v1.1.0

Breaking Changes

  • [Sidekiq] Sidekiq queues have been renamed from webhooks and default to stealth_webhooks and stealth_replies. Please ensure your Procfile is adjusted accordingly.
  • [Flows] flow_map.current_state.fails_to now returns a Stealth::Session instead of a Stealth::Flow::State. This might affect your catch_alls.

Enhancements

  • [Controllers] current_session_id now references the session ID in controllers
  • [Replies] Added support for dynamic delays
  • [Replies] Added support for service-specific variants
  • [Models] ActiveRecord is now part of the generated bot Gemfile and can be removed from bots
  • [Flows] Added support for redirects_to during state declaration. If specified, will automatically step a user to the specified state or session.
  • [Flows] redirects_to and fails_to now support a session string as an argument (my_flow->some_state). This allows you to fail and redirect to other flows. A state name specified as a string or symbol is still allowed.
  • [Errors] Backtraces are now more readable in logs
  • [Sessions] Sessions can now be configured to expire after a specified period of inactivity.

Bug Fixes

  • [Generators] Fixed flow generation
  • [Generators] Fixed sample Facebook services.yml example

Deprecations

  • [Controllers] current_user_id has been soft deprecated in favor of current_session_id