Delft-FEWS and the OpenArchive can easily be linked. Delft-FEWS has a lot of possibilities to export data  to the OpenArchive which makes it easy to store data in the OpenArchive from FEWS.

At the same time Delft-FEWS can access the data stored in the OpenArchive in several ways.

Data from the OpenArchive can be used in Delft-FEWS from viewing purposes but it is also possible to download data from the archive and use the data in, for example, transformations and/or the general adapter.

In the chapters below we will first explain how data from the Delft-FEWS can be exported to the OpenArchive.

We will also explain how to connect from a Stand Alone or an Operator Client to the OpenArchive and use the data for viewing or calculation purposes.

Exporting data from Delft-FEWS to the OpenArchive

The configuration of the data export to the OpenArchive is quite similar to the configuration of a regular data export in Delft FEWS.

The data export is executed by a regular FEWS workflow in a FEWS FSS. The data directly written by the FSS to the data directory of the archive.

The harvester of the archive will detect during its next run that new data was added to archive and update the catalogue accordingly.

More detailed information about the configuration of data exports to archive can be found here 22-2 Export to Deltares Open Archive

Connecting to the OpenArchive

To connect to the OpenArchive from a Stand Alone or an Operator Client you need specify where the OpenArchive is located.

This can be done by using the Archives.xml file in the SystemConfigFiles folder.

More detailed information can be found here: 10 Archives

You can easily check if you are connected to the archive by using the status bar in the FEWS explorer.

If you are connected to the archive, the name and version of the archive will be displayed.

If the connection fails because of a configuration error (or when the archive is not available) you will see the following:

After the configuration on the Archives.xml (which is only a few lines of configuration) a lot functionality becomes available!

Below a summary of the functionality which is available after configuring the Archives.xml.

Forecast Management Display

The forecast management display will have an additional tab "Archived forecasts" available. This panel will show in the upper part of the panel

which forecasts are available in the archive. The forecasts can be downloaded by using the download button.

System monitor

System Monitor display has a tab “Archive Server Status”.

The upper part of this tab shows the version of the archive server ,  status of the archive server components, number of records in the catalog and disk space info. The lower panel shows the status of the available archive server tasks.  If the task is scheduled, then  the column “Repeat Time” displays the schedule interval. Column “status”  shows whether the task is running or pending. In addition to “internal harvester and “clear internal catalog”   also other configured task such as “historical events exporter” or  “file sweeper” might be shown.

The tab “Archive Server Status” is able to show the status information only when the  Archive Server version 2017.02 patch 73970 or higher is running. If there is an older version running, the status cannot be obtained and the tab will be filled as shown below

Using data in Delft-FEWS workflows: the ArchiveDisplay

The archive display can be used to search for data in the archive and to download and import it.

At the moment it is only possible to import data into a stand alone.

It addition it is possible to create, update and delete events. The create events can be used in the same display to download and import data.

Details about how to configure the archive display can be found here:21 Archive display

Historical events

It is possible to define historical events by using the archive display. Historical events are a special type of event. If data in the archive is marked as being part of a historical event, the archive will export this data to the folder /root archive/historical event. FEWS will periodically run an import for historical events to import historical events from this folder. After the import the historical events are available in the time series dialog.

If a historical event is available for a time series then the historical event button will be shown (see image above).

After clicking on this button the display above appears. A list of historical events which is available for this displayed time series will shown.

After selecting 1 or more events the time series for these events will be displayed in the time series dialog. By using the arrow buttons  and the time series can be shifted to the left or right.