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CHANGELOG.md

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Release Version 1.7

Version 1.7 is not released yet.

New Features

  • Observation.result can be explicitly set to null. This is useful in cases where an observation did not produce a value, but the fact that an observation was attempted must still be recorded.
  • Exposed database connection options persistence.db.conn.max, persistence.db.conn.idle.max, persistence.db.conn.idle.min

Bugfixes

  • Fixed #53: Query parser not Unicode aware.
  • Fixed #52: Generating FeatureOfInterest did not work for Things with multiple Location entities when some of these entities were not geoJSON.
  • Fixed the 'year' function not working on interval properties.

Release Version 1.6

Version 1.6 was released on 2018-05-09.

New Features

  • User-defined-ids. FROST-Server can not be configured to allow the user to specify the id of created enitites. The new setting persistence.idGenerationMode has three allowed values:

    • ServerGeneratedOnly: No client defined ids allowed, database generates ids.
    • ServerAndClientGenerated: Both, server and client generated ids, are allowed.
    • ClientGeneratedOnly: Client has to provide @iot.id to create entities.

    Thanks to Marcel Köpke for the patch.

  • Improved time handling in queries. FROST-Server can now calculate with times:

    /Observations?$filter=phenomenonTime gt now() sub duration'P1D' mul Datastream/properties/days

  • Separated the MQTT and HTTP parts of the server. The MQTT and HTTP parts of the server are now separated in to stand-alone programs:

    • FROST-Server.HTTP: contains a web-app handling the HTTP part of the server.
    • FROST-Server.MQTT: contains a java application handling the MQTT part of the server.
    • FROST-Server.MQTTP: contains a web-app combining HTTP and MQTT, like it was before.

    There can be multiple MQTT and HTTP instances using the same database, to allow for horizontal scaling on a cloud infrastructure. The instances communicate over a pluggable message bus.

  • There are now three docker images:

    • The stand-alone HTTP package: fraunhoferiosb/frost-server-http.
    • The stand-alone MQTT package: fraunhoferiosb/frost-server-mqtt.
    • The all-in-one package: fraunhoferiosb/frost-server.

    An example configuration for docker-compose can be found as docker-compose-separated.yaml, that shows how the HTTP and MQTT packages can be started separately, with an MQTT message bus for communication between the HTTP and MQTT instances.

  • All configuration parameters can now be overridden using environment variables.

Bugfixes

  • Fixed service prefix in default config file.
  • Fixed Tomcat breaking selfLinks for ids that are URLs.
  • Fixed $select not working for @iot.id, in MQTT.
  • Fixed #48: creation in Observations in MultiDatastreams using DataArray formatting fails.

Release Version 1.5

Version 1.5 was released on 2018-02-15.

New Features

  • We have a name: FROST-Server
  • Implemented the Batch-processing extension.

Bugfixes

  • Fixed that the Docker image was built every time. Build it using mvn dockerfile:build -pl SensorThingsServer

Release Version 1.4

Version 1.4 was released on 2018-02-07.

New Features

  • Available through dockerhub: docker pull fraunhoferiosb/sensorthingsserver

Bugfixes

  • Fixed deep insert of MultiDatastreams.
  • Fixed building with Java 9.
  • Fixed EntityType initialisation sometimes failing.

Release Version 1.3

Version 1.3 was released on 2018-01-22.

New Features

  • Added new backends, using PostgreSQL with String and UUID columns for entity ids.
  • Improved support for Wildfly.

Bugfixes

  • Improved memory use when fetching large Observations with a high $top.

Release Version 1.2

Version 1.2 was released on 2017-12-04.

New Features

  • Added support for ISO8601 Interval formats in the form of [instant]/[duration] and [duration]/[instant]. For example: 2015-10-14T01:01:01.000+02:00/P1D.
  • Added a json properties field to (Multi)Datastream, FoI, Location, ObservedProperty and Sensor.
  • Added setting to limit data site of responses. In case of Observations with large results, or Things with large properties, this will reduce the $top when the max size is reached.

Bugfixes

  • Fixed only application/vnd.geo+json being recognised as GeoJSON, but not application/geo+json.
  • Fixed GIS-filters on FeatureOfInterest/feature not working.

Release Version 1.1

Version 1.1 was released on 2017-10-05.

New Features

  • Implemented MultiDatastream.
  • Added full support for filtering and odering on json fields.
  • Added Docker support.
  • Explicitly set the SRIDs from 0 to 4326 for PostgreSQL databases.
  • Added support for direct filtering on boolean fields.
  • Separated options for MQTT address to bind and internal address to connect to.

Bugfixes

  • Fixed result not always being correctly saved when updating observations.
  • Fixed MQTT not working on MultiDatastream subscriptions.
  • Fixed single quotes in string literals.
  • Fixed filtering on json Observation/result values.
  • Fixed crs of inserted geoJson.
  • Fixed update on MultiDatastream.
  • Fixed #8: Only keep one subscription per topic, with a count of how many clients use it.
  • Fixed inserting Observations using MultiDatastreams(x)/Observations
  • Fixed #5: MultiDatastream(x)/Observations did not work.
  • Fixed MQTT subscriptions on navigation links returning too much.
  • Fixed incorrect /$value response for time instance and time interval properties.

Release Version 1.0

Version 1.0 was released on 2016-11-03