Edge Agent Changelog

This file represents all changes to the losant-edge-agent since it’s initial release. This project adheres to Semantic Versioning.

1.18.1 - 2020-07-23

Added

  • Added MQTT reconnect interval to be variable

Changed

  • Upgraded Node.js to 12.18.0.
  • Multiple library dependencies were updated.

1.18.0 - 2020-06-11

Changed

  • Added support for payload path configuration for the OPCUA Browse, Call, Read, and Write nodes.
  • Upgraded underlying libraries for the OPCUA trigger and nodes.
  • Upgraded the underlying libraries for the Tensorflow: Predict node.
  • Messages published to the Losant cloud broker by the Device: State and MQTT nodes now check to make sure they are below the maximum allowed size.
  • Added suppport for the stream commands to the Redis node.
  • Added an optional result path to the Tweet node.
  • Added an optional result path to the Slack node.

Fixed

  • Fix issue where under certain circumstances the Tensorflow: Predict node could crash the agent.
  • Fix issue where host clock changes were not correctly taken into account for the Timer trigger.
  • Fix issue where the Tensorflow: Predict node no longer worked on the arm32 build of the agent.
  • Fix issue where the HTTP node did not properly obey the MAX_EXTERNAL_CALL_TIME environment variable.
  • Fix some rare timeout race conditions in the Function node.

1.17.0 - 2020-04-28

Added

  • Added support for using the Edge Agent as a local MQTT Broker.

Changed

  • Added the ability for the MQTT Trigger to trigger on messages published to the local broker.
  • Added the ability for the MQTT Node to publish messages to the local broker.
  • Added support for the server-side encryption flag to the AWS S3: Put Node.

1.16.0 - 2020-03-18

Added

Changed

  • Upgraded underlying libraries for the OPCUA trigger and nodes.
  • Added support for Read Device Identification to the Modbus: Read node.
  • Update to Node.js 12.16.1.
  • Multiple library dependencies were updated.

Fixed

  • Fix issue where under certain circumstances the Run Executable node could crash the agent.
  • Fix issue where the Workflow Error trigger could crash the agent when the payload was in certain unexpected formats.

1.15.0 - 2020-02-19

Changed

  • Upgraded underlying libraries for the Modbus: Read and Modbus: Write nodes.
  • Upgraded underlying libraries for the Serial Write node and the Serial trigger.
  • Upgraded underlying libraries for the MongoDB node.
  • Added support for an error path to the MongoDB node.
  • Added support for replaceOne and aggregate to the MongoDB node.

Fixed

  • Re-enable support for TLS 1.0 and 1.1 in the HTTP node (was removed in previous version).

1.14.0 - 2020-01-10

Changed

  • Update to Node.js 12.13.0.
  • Multiple library dependencies were updated.
  • Added support for an error path to the JSON Decode node.

Fixed

  • Fix issue where an error in a Function node could crash the agent.

1.13.0 - 2019-11-07

Added

Changed

  • Added support for fractional second timers to the Timer trigger.
  • Add new options and timzone support to the Date/Time node.
  • Improved performance of the Function node for large payloads.
  • Upgraded underlying libraries for the SQL node.

1.12.0 - 2019-10-07

Added

Changed

  • Added ability to see result information for the Device: State node.

Fixed

  • Fix issue where agent would incorrectly think the current architecture would support the TensorFlow: Predict node, and the agent would crash.

1.11.0 - 2019-08-22

Added

Changed

  • Changed the default parse method for the Serial trigger to be delimiter instead of byte length.
  • Add ability to define data bits, stop bits, and parity for the Modbus: Read and Modbus: Write nodes when connecting with serial.
  • Update to Node.js 10.16.0.
  • Multiple library dependencies were updated.

Fixed

  • Fix issue where unit id was improperly ignored for the Modbus: Read and Modbus: Write nodes when connecting with serial.
  • Fix race condition where agent could crash when workflow debugging was enabled and workflows were triggered immediately on startup.
  • Fix issue where agent could error when cleaning up stale TensorFlow: Predict models.

1.10.0 - 2019-07-23

Added

Changed

  • Added support for serial RTU connections for the Modbus: Read node.
  • Added support for serial RTU connections for the Modbus: Write node.
  • Added support to get all storage values with the Storage: Get Value node.
  • Upgraded the underlying libraries for the various OPCUA nodes.
  • Workflow storage writes now write to disk asynchronously every few seconds and do not block the running workflow.
  • Deprecated timeSincePath support for the Throttle node.

Fixed

  • Fix typos in OPCUA node error messages.
  • Fix issue where the Allen-Bradley Read and Write nodes would behave inconsistently when controller and tag names were the same.
  • Fix issue where heavy use of the Throttle node would cause errors.

1.9.1 - 2019-06-13

Fixed

  • Fixed race condition introduced in 1.9.0 that would cause the agent to crash on startup in certain circumstances.

1.9.0 - 2019-06-06

Added

Changed

  • Added support for configuration via a payload path for the Modbus: Read node.
  • Added support for configuration via a payload path for the Modbus: Write node.
  • Added support for FC16 writes in the Modbus: Write node.
  • Added SSL support to the Redis node.
  • The HTTP node now supports a request body encoding type.
  • The String node now supports pad.
  • Update to Node.js 10.15.3.
  • Multiple library dependencies were updated.

Fixed

  • Fixed Buffer, Date, and ObjectID type inconsistencies when passing data to and from the Function node.
  • Fixed issue where multiline statements did not work properly in the SQL node.
  • Fixed issue with the Postgres Interval data type in results from the SQL node.

1.8.0 - 2019-04-24

Added

Changed

  • Improved error messages when evaluating expressions with incorrect use of the ! operator.
  • Improved error messages for the Generate ID node.
  • The HTTP Node now supports a response body encoding type.

Fixed

  • Fixed issue where OPCUA nodes errored the workflow instead of adding an error to the payload when the OPCUA call returned an invalid datatype.
  • Fixed issue where the jsonEncode payload helper behaved incorrectly when used recursively.

1.7.0 - 2019-03-26

Added

Fixed

  • Fixed issue with OPCUA nodes not correctly reusing the same session across workflow runs.
  • Fixed issue where workflows allowed invalid program and tag names for the Allen-Bradley nodes.

1.6.1 - 2019-02-28

Fixed

  • Fixed a permissions issue with the Docker image which caused filesystem permission errors with the OPCUA nodes.

1.6.0 - 2019-02-27

Added

Fixed

  • Fixed an issue where non-geographic area codes for USA phone numbers were rejected as invalid in the Twilio node.

1.5.0 - 2019-01-31

Added

Changed

  • The HTTP Node now supports making requests with client certificates.
  • The HTTP Node now supports using a custom CA.
  • Update to Node.js 10.15.0.
  • Multiple library dependencies were updated.

Fixed

  • Fixed an issue where one workflow could monopolize the process and prevent other workflows from running.

1.4.0 - 2018-12-18

Added

1.3.1 - 2018-11-21

Fixed

  • Fixed an issue where a mix of successful and failing modbus reads in a single Modbus: Read node would not be represented correctly on the payload.
  • Fixed an issue with the MongoDB where certain connection URIs were incorrectly parsed.

1.3.0 - 2018-11-08

Added

Changed

  • The Modbus: Write Node now has an adjustable timeout.
  • The Modbus: Read Node now can be configured to read values as either signed or unsigned, and it has an adjustable timeout.
  • Multiple library dependencies were updated.

Fixed

  • An issue where using the currentDateTime template helper by itself without a format argument would result in a blank string has been fixed.
  • An issue where the agent would exit without waiting for logs to finish writing has been fixed.
  • An issue with timers configured by cron in certain timezones would hang has been fixed.

1.2.5 - 2018-10-04

Fixed

  • The File: Read Node now correctly closes the open file handle afterward in all cases.
  • When the File: Read Node errors, it no longer overwrites the entire payload with the error message in certain cases.
  • The Modbus: Write Node now correctly accepts the full range of a 16 bit unsigned integer for writing to a register.

1.2.4 - 2018-09-28

Changed

  • Change the limit on the number of concurrently running nodes to be applied per running workflow instead of globally across all running workflows.

1.2.3 - 2018-09-27

Added

  • There are now Alpine based docker images for the Edge Agent.
  • The typeof handlebars helper has been added.

Changed

Fixed

  • The HTTP Node now uses auto for ecdhCurve for SSL connections.

1.2.2 - 2018-08-22

Added

  • Added a configuration flag to control the queuing of messages while the agent is offline.
  • Added the new payload helper scaleLinear.
  • Added the new payload helper currentDateTime.

Changed

1.2.1 - 2018-08-07

Added

Changed

  • Modbus: Read Node and Modbus: Write Node now default to port 502.
  • Improved MongoDB Node error handling.
  • A workflow publishing MQTT messages to an invalid or unauthorized topic will no longer cause the agent to disconnect from the Losant Platform.

Fixed

  • System clock changes no longer affect the firing of interval timers while the agent is running.
  • Debug messages with circular references correctly send to the Losant Platform.

1.2.0 - 2018-06-21

Added

  • Data / ServiceNow Node
  • Triggers / UDP Trigger
  • Outputs / UDP Send Node
  • Edge workflow payloads now have environment variables available under the field agentEnvironment.
  • Edge workflow payloads now have the field isConnectedToLosant, representing if the agent is currently connected to Losant.

Changed

  • Easily set authorization headers for requests on the HTTP Node.
  • Can now set the path for a cookie on the HTTP Response Node.
  • Improved phone number casting for the Twilio Node.
  • Update to Node.js 8.11.3.

1.1.1 - 2018-05-21

Changed

  • Improved startup messages.
  • The HTTP Node now allows for setting timeouts and capturing network errors.

Fixed

  • Improved messages for Slack Node errors.
  • Support circular references in debug messages.

1.1.0 - 2018-03-29

Added

Changed

Fixed

1.0.0 - 2018-03-08

Added