Latest Contributions by RJSunderman

‎01-20-2021

The Expected Date Format property is only applicable to a single attribute field whose data type, as specified by the event record's GeoEvent Definition, is a Date. An inbound connector, like the one you are using (SystemFile/Text) would have to specify an existing GeoEvent Definition to use (vs. allowing the input to create one for you) in order to specify which attribute field(s) should be handled as Date values. However, you can only specify a single Expected Date Format mask, which means that both your "date" and your "time" would have to be part of a single attribute. An inbound adapter cannot handle the conversion of a "date" and a "time" when the values are in separate attribute fields. None of the configurable processors in the GeoEvent Server releases up through the current release (10.8.1) provide a way to "cast" data from a String to a Date. This means your only opportunity to adapt a string representation of a date/time and create an actual Date value is as part of an inbound connector's adapter. Once data has passed from an inbound connector into a GeoEvent Service you won't be able to "cast" a value to a Date unless the value happens to be an epoch value such as 784041330000. The good news, looking forward, is that the 10.9 release will have a toDate( ) function which both the Field Mapper and the Field Calculator will be able to use. The new function will allow two or more string values from separate attributes to be combined with a literal string to produce an ISO 8601 formatted date/time string. You will be able to send data to GeoEvent Server with a "time" and a "date" in separate fields ... for example: "dateString": "1994-11-05" and "timeString": "08:15:30-05:00" ... and write an expression such as toDate(dateString + 'T' + timeString) to create a single date/time string and write the result out to a field of type Date. - RJ reference: https://www.w3.org/TR/NOTE-datetime

‎01-19-2021

Hello Ctal - I would ask that you please submit an incident with Esri Technical support so that someone can be assigned specifically to follow up with you. If you would please include a sample of the tab-delimited data your File/Text inbound connector is receiving, that will help reproduce the issue. I'm going to take a guess and assume that you have configured a Watch a Folder for New CSV Files input using the input's Expected Date Format property to specify a Java SimpleDateFormat string. Data coming from your SQL database has only the "time" portion of a date/time string and thus is not one of the few well-known string formats GeoEvent Server recognizes for specifying a date/time value. GeoEvent Server uses epoch values (in milliseconds) to specify Date values. Both date and time are inherently part of every Date value since the values are not a time-of-day string but rather a number of milliseconds since the Unix Epoch (Midnight Jan 1 1970). GeoEvent Server's inbound adapter will not be able to cast a string value such as "23:45:15" to a Date value "(today) 11:45:15 PM (time zone) 2020" unless the string representation of the date/time incorporates a date as well as a time. Hope this information is helpful – RJ

‎11-05-2020

In this blog we will take a deeper look at registering server connections with GeoEvent Server, something administrators commonly have to do to when configuring a GeoEvent Server deployment. Why do you have to register an ArcGIS Server connection with GeoEvent Server There are several different configurable components which require you to select a registered server and specify which services folder, map/feature service, and often a specific feature layer exposed by that service in order to use the feature layer's schema or feature records. A few examples include: The Poll an ArcGIS Server for Features input used to query a service for feature records. When you want to import a GeoEvent Definition from a feature service's schema. The Field Enricher (Feature Service) processor used to load a feature record set to use for enrichment. The Add a Feature and Update a Feature outputs used to persist data from processed event records as feature records in a geodatabase. All of the user-interfaces in the above examples populate their options from a cache of information GeoEvent Server collects when it queries a registered ArcGIS Server to discover published feature services. Service discovery is not performed the moment you click to open the panel. The cache is created and updated in the background because it can take several seconds – sometimes minutes or even tens of minutes – for GeoEvent Server to completely crawl the ArcGIS Server's REST Services Directory and query the information it needs from all of the available services. Which leads into the topic I want to address in this blog: Is there a way to know when service discovery is being run and how long it is expected to take? Using the ArcGIS Server Connection component to log messages You can configure the following component logger to request DEBUG messages be logged: com.esri.ges.datastore.agsconnection.DefaultArcGISServerConnection I've included a sample of the logged messages you will be looking for at the end of this article. Requesting this component logger include DEBUG messages in its logging will allow you to see, in the system log file, when the service discovery kicks off and which map/feature services it interrogates to learn about their layers. A message will be logged for every feature service being interrogated as well as a success message when service discovery is complete. There is no indication in the GeoEvent Manager web application that service discovery is about to start or is currently running. The best way to tell that service discovery is running is to start the workflow to import a GeoEvent Definition. If the blue/white indicator displays, requesting you "please wait", you know that the GeoEvent Server is busy updating its ArcGIS Services cache. Otherwise the GeoEvent Definition user-interface will display immediately allowing you to choose a server connection, folder, feature service, and feature layer. GeoEvent Manager does not allow you to configure, or schedule, when service discovery should take place. You are able to change the Discovery Rate for each server connection you register to specify how frequently a refresh should be performed. The default for recent software releases is every 60 minutes. I have personally found that when I use ArcGIS Pro, the Enterprise portal, or GeoEvent Manager to publish a new feature service, I want to use it now – so it is not uncommon for me to publish a feature service and immediately request GeoEvent Server run a service discovery to update its cache by clicking the refresh button on the server connection I have registered as a Data Store. This eliminates the need to have GeoEvent Server periodically refresh the cache for me, so I usually set the Discovery Rate for server connections I register to a fairly large value like 1440 minutes so that service discovery is run once once per day (or when GeoEvent Server is stopped and restarted). Service discovery takes too long and interferes with normal operations. Is there anything I can do? This is something the product team is working on. Refactoring GeoEvent Server to support all of the operations which use feature services, however, to interface with ArcGIS Server some other way is both high risk and high reward. Several different design options have been considered, but implementation has had to be deferred for each of the last several major releases. The best option for now, therefore, is to limit the number of features services which are discoverable each time service discovery is run. A recommended best practice is to configure your GeoEvent Server Data Store (e.g. the server connection you are registering with GeoEvent Server) with credentials. The user credentials do not have to be an administrative user, just a user who owns and published the feature service. You can use the Enterprise portal content item manager to assign existing feature services a new owner and configure GeoEvent Server to authenticate as that user when crawling the ArcGIS Server's REST Services Directory to limit the number of discoverable services. GeoEvent Server administrators often configure their registered server connections with the ArcGIS Server or Enterprise portal primary administrative account – which naturally sees all published services. If you can identify the feature services to which you want GeoEvent Server to write data, or from which you want GeoEvent Server to retrieve feature records or a feature layer's schema, and assign ownership of just those services to a user set aside specifically for your "real-time" data, you can improve service discovery considerably by not crawling all of the feature services being maintained by more traditional feature editing workflows. The trick is to identify the feature services your GeoEvent Server components actually care about and limit discovery to only those feature services. Example messages logged by the ArcGIS Server Connection component logger 2020-11-05T13:55:02,124 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | sleep interrupted java.lang.InterruptedException: sleep interrupted at java.lang.Thread.sleep(Native Method) ~[?:?] at com.esri.ges.datastore.agsconnection.DefaultArcGISServerConnection$CacheUpdater.run (DefaultArcGISServerConnection.java:235) [56:com.esri.ges.framework.datastore.agsconnection-datastore:10.8.1] 2020-11-05T13:55:02,124 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Exiting Cache Updater run method.... 2020-11-05T13:55:03,274 | DEBUG | qtp808353329-598 | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Create an instance of CacheUpdater.... 2020-11-05T13:55:03,274 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating cache for DataStore Public_Esri_Hosted_Server... 2020-11-05T13:55:08,944 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "Active_Hurricanes_Sampler", Type: "FeatureServer"). 2020-11-05T13:55:15,296 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "Active_Hurricanes_v1", Type: "FeatureServer"). 2020-11-05T13:55:21,613 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "Air_Quality_PM25_Latest_Results", Type: "FeatureServer"). 2020-11-05T13:55:23,311 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "ASAM_events_V1", Type: "FeatureServer"). 2020-11-05T13:55:25,033 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "Coral_Reef_Stations", Type: "FeatureServer"). 2020-11-05T13:55:27,876 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "GDELT_Health_Pandemic", Type: "FeatureServer"). 2020-11-05T13:55:29,170 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "GDELT_v1_Social_Tones", Type: "FeatureServer"). 2020-11-05T13:55:30,368 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "IHME_Projected_Peaks_QA", Type: "FeatureServer"). 2020-11-05T13:55:31,995 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "Median_Sea_Ice_Extent_for_the_Antarctic", Type: "FeatureServer"). 2020-11-05T13:55:32,995 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "Median_Sea_Ice_Extent_for_the_Arctic", Type: "FeatureServer"). 2020-11-05T13:55:34,063 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "MODIS_Thermal_v1", Type: "FeatureServer"). 2020-11-05T13:55:35,225 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "National_Farmers_Market_Directory", Type: "FeatureServer"). 2020-11-05T13:55:36,445 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "ncov_cases", Type: "FeatureServer"). 2020-11-05T13:55:38,421 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NDFD_Ice_v1", Type: "FeatureServer"). 2020-11-05T13:55:40,579 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NDFD_Precipitation_v1", Type: "FeatureServer"). 2020-11-05T13:55:43,479 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NDFD_SnowFall_v1", Type: "FeatureServer"). 2020-11-05T13:55:45,920 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NDFD_WindForecast_v1", Type: "FeatureServer"). 2020-11-05T13:55:49,935 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NDFD_WindGust_v1", Type: "FeatureServer"). 2020-11-05T13:55:51,519 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NDFD_WindSpeed_v1", Type: "FeatureServer"). 2020-11-05T13:55:53,124 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NDGD_SmokeForecast_v1", Type: "FeatureServer"). 2020-11-05T13:55:54,193 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NOAA_METAR_current_wind_speed_direction_v1", Type: "FeatureServer"). 2020-11-05T13:55:55,683 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NOAA_short_term_warnings_v1", Type: "FeatureServer"). 2020-11-05T13:55:58,401 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NOAA_storm_reports_Sampler", Type: "FeatureServer"). 2020-11-05T13:56:00,844 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NOAA_storm_reports_v1", Type: "FeatureServer"). 2020-11-05T13:56:06,494 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NWS_Watches_Warnings_Sampler", Type: "FeatureServer"). 2020-11-05T13:56:12,942 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "NWS_Watches_Warnings_v1", Type: "FeatureServer"). 2020-11-05T13:56:19,622 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "Recent_Hurricanes_v1", Type: "FeatureServer"). 2020-11-05T13:56:21,726 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "Satellite_VIIRS_Thermal_Hotspots_and_Fire_Activity", Type: "FeatureServer"). 2020-11-05T13:56:22,871 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "seaice_extent_N_v1", Type: "FeatureServer"). 2020-11-05T13:56:23,976 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "seaice_extent_S_v1", Type: "FeatureServer"). 2020-11-05T13:56:25,081 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "SPI_recent", Type: "FeatureServer"). 2020-11-05T13:56:28,250 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "Standardized_Precipitation_Index_(SPI)", Type: "FeatureServer"). 2020-11-05T13:56:31,492 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "US_Cases_per_county_(time)", Type: "FeatureServer"). 2020-11-05T13:56:33,073 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "USA_Wildfires_v1", Type: "FeatureServer"). 2020-11-05T13:56:35,074 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating layers for Service (Folder: "/", Name: "USGS_Seismic_Data_v1", Type: "FeatureServer"). 2020-11-05T13:56:36,595 | DEBUG | Public_Esri_Hosted_Server-Updater | DefaultArcGISServerConnection | 56 - com.esri.ges.framework.datastore.agsconnection-datastore - 10.8.1 | Updating cache for DataStore Public_Esri_Hosted_Server done. Success: true.‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ You can see from the above that discovery of 36 feature services hosted by an external, public server, took just over 90 seconds. The more services there are to discover, the longer service discovery will take. See Also: GeoEvent Server > Administer > Data stores in the GeoEvent Server on-line help Debug Techniques - Configuring the application logger GeoEvent Server blog series GeoEvent Configuration: Data Store Connections w/Tokens blog by Eric Ironside

‎10-12-2020

Hello jess neuner – You're correct that clicking Publish Stream Service a "second" time is not going to show you the existing service's configuration. All that does is open the dialog to allow you to begin selecting (again) the properties you want to specify to the service publication mechanism in order to publish a service. I'm assuming you toggled the Store Latest capability when originally publishing the stream service, and want to know which feature service the stream service is using to store latest observations? Your best bet, if I'm following your question, is to browse to the stream service in the ArcGIS REST Services Directory. At the top of the service's web page, in the upper-left hand corner, you should see a JSON link; clicking this will open a browser tab with the service's raw JSON specification. In there you will find things like which field is being used as a track identifier (derived from the field tagged TRACK_ID in the selected GeoEvent Definition) and the URL of any supporting feature services for capabilities like "Store Latest" and "Related Features". If you open an incident with Esri Technical Support, we can probably publish a stream service with store latest similar to how you have in your environment, then deliberately use the stream service to broadcast some data which the feature service would not be able to accept or persist as a feature record in the geodatabase and see how that condition gets logged in the GeoEvent Server's karaf.log ... Hope this information is helpful – RJ

‎08-27-2020

Matej – Using my test data above, I can configure three MCFS (multicardinal field splitter) processors to split the data first on the group element metric_collection, then on the group element Level1_Group3, and finally on the array Group3_Items. Following this pattern I think you'll be able to achieve what you need to do. Above, I've illustrated the three event records routed from the final field splitter to the output. Please make sure you have downloaded the latest release of the field splitter processor bundle (Release 8 - June 24, 2020) for release 10.8.1 of ArcGIS. This version includes changes which allow multiple MCFS processors to be arrayed in series. If you are using an earlier release of ArcGIS, please use Release 7 (February 27, 2020). Hope this information is helpful – RJ

‎08-26-2020

Hello Matej – Unlike a Field Mapper or Field Calculator which needs you to specify the full "path" into a data structure, the Field Splitter and in particular Multicardinal Field Splitter processors only expect the name of the element at which you want the split to be applied. So the Field to Split parameter's value should only specify the element's base name, linearWithinLinearGNElement, not the full path to the element (e.g. groupOfLocations.globalNetworkLinear.linearWithinLinearGNElement). That said, you may have found a limit of what the processor is able to handle in terms of a deeply nested, hierarchical, multicardinal, data structure. To test what you are trying to do I created some sample JSON data which adapts using the GeoEvent Definition illustrated below. Note that it does not matter whether the data received is formatted as XML or JSON – the inbound connector has to adapt whatever data is received to create an event record which can be routed to a GeoEvent Service for processing. After receiving the JSON above and allowing the inbound connector to adapt it using the illustrated GeoEvent Definition, I can use a Field Mapper to extract, for example, the data value "Delta" (line 21 in the sample JSON) by specifying the full path down through the data structure to the "E301" element in the array: metric_collection.Level1_Group3.Group3_Items[1].E301 If I specify the same full path when configuring the Multicardinal Field Splitter, I see the error message you were able to capture from the system log: Field name <name> is invalid. However, if I specify only Group3_Items (the name of the array) as the field on which to conduct the split, I see a different error message in the log indicating a null pointer exception was encountered. I am in contact with one of our developers to review the source code of this processor. We will see what we can do to better handle the case where Group3_Items (the name of the array) is specified and why a null pointer is not being caught. The work around, for now, is to use multiple Multicardinal Field Splitter processors in series and "walk down" the hierarchy from the top to the multicardinal element on which you want the final split applied. I'll reply to this post with what I tested so you can see what I had to do to implement the work around. Please make sure you have downloaded the latest release of the field splitter processor bundle (Release 8 - June 24, 2020) for release 10.8.1 of ArcGIS. This version includes changes which allow multiple MCFS processors to be arrayed in series. If you are using an earlier release of ArcGIS, please use Release 7 (February 27, 2020). Hope this information is helpful – RJ

‎08-18-2020

Hello Jitendrudu – When replies were written for the original thread Re: GeoEvent process Oracle/SQL connector I don't think the GeoEvent Manager supported publishing a feature service. The functional server role for licensing hadn’t been invented yet and GeoEvent Server was still being referred to as the GeoEvent Processor Extension for ArcGIS Server. In recent releases, however, you can use GeoEvent Manager to publish Hosted Feature Layers to your Enterprise portal or map/feature services to a stand-alone ArcGIS Server. So on the one hand, nothing has changed with regard to the interface between GeoEvent Server and an RDMBS table. The interface is still a feature service since GeoEvent Server can only make REST requests against an Esri ArcGIS Server feature service to add or update feature records. But on the other, you can now publish feature services which do not necessarily have Geometry. A feature service is typically published using a client, like ArcMap, which will not allow you to publish a feature service without a geometry. ArcMap defines a feature class as a collection of feature records and a feature record is a data structure with both geometry and attributes describing some object in the real-world. GeoEvent doesn’t make the same assumptions regarding Geometry that ArcMap does though. Real-time data streaming from a sensor whose position does not change wouldn’t necessarily include a geometry or coordinate values with its data. GeoEvent Server doesn’t assume that all data records will have geometry. To GeoEvent Server, “geometry” is just another type of attribute like a String or a Date. Say, for example, you were to create a GeoEvent Definition with two attribute fields – one a Date the other a String – and didn’t include a Geometry field type. You can use any release of GeoEvent after 10.6.1 to publish a feature service to the ArcGIS Server beneath which GeoEvent Server is running. Without a Geometry, to any other client, the feature class's table looks like a non-spatial table. But ArcGIS Server provides a feature service interface to the table allowing you to write the Date and String data you want to it without having a Geometry. You would still configure an Update a Feature output, and made sure to use a Field Mapper to map whatever schema your inbound connector uses to adapt data you receive to the feature service’s schema (PostGRE, for example, insists on using only lower-case field names; Oracle only upper-case field names). You shouldn't have any problem ingesting some sample data that has no geometry and using GeoEvent Server to add/update “feature records” via the feature service. The data records in the RDBMS simply have no geometry … so you won’t be able to add them to a web map as a feature layer for example, but I can query the data at REST. I assume if I had some other database client able to query from the data table I’d be able to retrieve the data that way, rather than going through the feature service’s REST interface to query the data. This would be a lot easier that developing a custom outbound transport which understood how to connect to the RDBMS using ODBC. This is possible, but I don’t know how feasible it is, really, given the inter-dependency of bundles in the Java system framework that underlies GeoEvent Server. GeoEvent Server’s whole design, in this case, assumes that you’ll be able to work through a feature service to access feature records. Hope this information is helpful – RJ

‎08-18-2020

Hello Rene -- You are correct. Documentation newly updated with the 10.8.1 release, particularly the on-line help topics Load Balancing and strategies for scalability, reliability, and resiliency, no longer discuss what I have referred to as a 'site' deployment approach (where multiple ArcGIS Server instances, each with a GeoEvent Server, are organized in a single ArcGIS Server site). Please take a look at the newly prepared on-line documentation; we've added quite a bit and have plans for more by the end of the year. Moving forward, the product team is recommending that all GeoEvent Server deployments follow a 'silo' deployment pattern. The distinction comes when you decide whether you have to deploy the same configuration to each machine, so you can use an external mechanism to route or distribute event records to two otherwise identical instances in parallel, or whether you can deploy a different configuration to each machine (allowing one instance to ingest event records of one type and another instance to handle event records of some other type). Update: February 2021 Beginning with the 10.9 release, every instance of GeoEvent Server you deploy must run beneath its own ArcGIS Server with its own ArcGIS Server site. This extends the single-machine high-availability active/active and single-machine high-availability active/passive deployment patterns promoted by ArcGIS Server. You will still be able to deploy multiple instances of GeoEvent Server which run independently from one another. These do not share a common configuration which GeoEvent Gateway must synchronize across a “cluster” of GeoEvent Server instances. (Recall that GeoEvent Gateway encapsulates the Apache Kafka message handler and the Zookeeper distributed configuration store used by GeoEvent Server.) We made the decision to remove support for multiple-machine / single-site deployments because we have found over time that GeoEvent Server deployments which coordinate through a single ArcGIS Server site do not meet reliability objectives. In rare cases of complete hardware failure -- where a single server node in a multi-machine deployment went permanently offline -- the deployment pattern we have deprecated did provide fault-tolerance. More frequently, however, when a deployment was challenged by a disadvantaged network, or a machine was temporarily unavailable, or servers were restarted out of sync, the whole deployment could become effectively unusable. System recovery for multitiple-machine / single-site deployments was tedious and error prone, which led to promises that a system architecture would provide high-availability failing to meet expectations. We therefore refactored the GeoEvent Gateway to provide better resiliency and overall system stability for the majority of our users by removing cluster leader election and in-sync replication between peer brokers/consumers. This means that multiple instances of GeoEvent Server (beginning with the 10.9 release) will no longer be able to synchronize a shared configuration or support a "clustered computing" architecture. But in the end, we achieve a better, more resilient, and more stable product. If you would like an informal write-up I prepared looking at some concerns surrounding this, please e-mail me directly: rsunderman .at. esri.com Hope this information is helpful, RJ

‎08-18-2020

Hello nasser hinai – I think what you want to do is use an Incident Detector with an opening condition which determines an asset has "entered" and area of interest (registered as a geofence) and set the closing condition to evaluate true when the asset's location has "exited" the geofence. The event record output from the Incident Detector will be an incident which has a very different schema from the event record you routed to the processor. While you'll lose a bunch of attributes from the original record, you will retain whatever field you tagged TRACK_ID and also GEOMETRY. The incident event record will also have a duration which you can pass through a filter. If the asset were to dwell within an area of interest for some time you could use a filter to check that: (a) the incident's status is 'Ended' (b) the incident's duration is greater than some value. Then whatever event records the filter allows to pass you send to an output configured to send an e-mail notification. Hope this information is helpful – RJ

‎08-18-2020

Hello Jose – To be clear, you are developing a custom web application which complements or reproduces what you can do using the GeoEvent Manager? So you're authenticating with the GeoEvent Server's administrative REST API to (probably automate) the creation of a bunch of processors, publishing a workflow connecting these processors as a GeoEvent Service. Does the service publish, albeit in an error state? If the service publishes you can export an XML representation of the configuration and inspect that to look for where the GeoEvent Service publication and validation is detecting a loop. There is no hard limit I'm aware of for how many processors you can place in a GeoEvent Service or how many different event flow connections you bring into or extent out from a node (e.g a processor or filter). There are certainly practical limits, and you should understand that every time a node handles an event there is some non-zero latency associated with that operation. Complicated real-time analytics applied through complicated event processing workflows through GeoEvent Services can severely impact the overall event records you can expect a GeoEvent Server instance to be able to handle. I have attached a simple illustration of an XML snapshot from an export of a GeoEvent Server configuration. Reading the XML, you'll be able to review the <flow> of a GeoEvent Service and see the <from> and <to> connections between every node. Hopefully the illustration helps with an audit / inspection of your more complicated GeoEvent Service. – RJ

‎08-06-2020

Hello Geoffrey West – Looking at the JSON you illustrated it looks to me like the data object is an array of JSON objects: "data": [ { "id": "b2c2626d-ff0b-4892-8262-5acae60946a4", "name": "JUPITER II", "mmsi": 701000533, ...‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ You probably need to add an index into your hierarchy parsing string to change data.last_known_position.geometry.coordinates[0] to data[0].last_known_position.geometry.coordinates[0] Also, I noticed that all of the negative double values seem to have an extra space between the '-' and the actual value. Quick experiments with GeoEvent Server seem to show that the extra white-space is being removed by the library used to parse the data ... I noticed https://jsonlint.com does the same thing ... but a different validator I often use triggered on these values and refused to validate the JSON to show it in a tree with collapsible nodes. Hope this information is helpful – RJ

‎08-05-2020

Hello Nicholas Gray – A couple of things you might try, to see if you're able to get a client to successfully subscribe to the stream service: On your mobile device, browse to https://websocket.org/echo.html For the Location enter wss://my-machine:6143/arcgis/ws/services/my-stream-service/StreamServer/subscribe Substitute your fully-qualified machine's domain name for my-machine and the name of your published stream service in the ArcGIS REST Services Directory for my-stream-service. You can find the basis for this URI if you click the JSON link in the top-left corner of the stream service's web page in the ArcGIS REST Services Directory. Scroll to the bottom of the JSON service spec to see the URI. I can browse to the ArcGIS REST Services Directory on my laptop and subscribe to the stream service via REST, and also use the WebSocket.org echo test to connect to see the feature record data as it is broadcast – probably because I've configured SSL certificates with trust for the Esri domain on the target machine and have a VPN running on the laptop enabling me to reach the machine on which GeoEvent Server is running. I found, for example, that I cannot browse to the ArcGIS REST Services Directory from my mobile. That would make trying to use the WebSocket.org echo test to connect to the stream service's web socket a non-starter. I can create a web map, again on my laptop, adding the stream service as a stream layer, and save it to my ArcGIS Online organization. I can log-in to ArcGIS Online from my mobile and access the web map – but I don't see any of the stream layer's data ... again, likely because without a VPN the web map client cannot access the machine running ArcGIS Server to browse its REST Services Directory or reach the web socket endpoint hosted by GeoEvent Server. Assuming that access to the machine from your mobile is not the problem, you might check the ArcGIS Server's SSL certificate configuration. The web browser on your mobile may need to see something to validate the HTTPS (or in this case WSS) connection. Using the WebSocket.org echo test is a good resource to see if clients external to your ArcGIS Enterprise are able to connect to a web socket being run by the GeoEvent Server. Hope this information is helpful – RJ

‎07-10-2020

Questions and Answers from the Expo Floor: What is ArcGIS GeoEvent Server GeoEvent Sever is one of several license roles for ArcGIS Enterprise. You license and install GeoEvent Server to add real-time capabilities to your Enterprise. GeoEvent Server, out-of-the-box, provides configurable inputs for connecting to a variety of data streams from virtually any data provider. What is a GeoEvent Service A GeoEvent Service is an event processing workflow you design and publish using the GeoEvent Manager web application. You drag, drop, and configure an input to specify how data will be received. You add and configure an output to specify what will be done with the data the GeoEvent Service processes. You then add one or more filters and processors to the service, connect the nodes to define an event processing workflow, and publish the GeoEvent Service. See Also: GeoEvent Server inputs GeoEvent Server filters GeoEvent Server processors GeoEvent Server outputs What's New in GeoEvent Server 10.8 / 10.8.1 Significant work went into simplifying common user workflows enabling users to maintain their focus on configuring and publishing GeoEvent Services. Most of what you need to do is now done from within the Service Designer rather than switching to a different web page in the GeoEvent Manager. The status, catalog, and option to create, edit, and delete primary service components (inputs, outputs, etc.) is now available from a consolidated Monitor page in the GeoEvent Manager. There is also a new GeoEvent Sampler utility built into the Service Designer allowing you to see the effect filters and processors you configure have on event records as they are received in real-time. For details, please see the PDF attached to this article. Question Answer Question Answer Question Answer

‎04-22-2020

Hello Mariela Del Rio – When you say automatic handling of "variable number of points in the routes", I'm not sure I follow what you are asking for. Looking over the GeoEvent Definition illustrations in the thread I don't see an attribute for a route or routes that is multicardinal (indicating the attribute is an array containing more than one value). Sara's reply to you on 10-February has a GeoEvent Definition whose event_time attribute looks kind of like a geoJSON geometry structure. The geoJSON specification for geometries places coordinates in an array. Our Generic-JSON inbound adapter includes a parameter asGeoJSON which can be used to tell the adapter to try parsing a field whose declared type is Geometry as a geoJSON geometry. The rest of the JSON structure is still handled as generic JSON, but any supposed geometry will be parsed differently, specifically so arrays of coordinate values can be interpreted as polylines or polygons. I'd have to experiment some with actual data from these feeds, but if this is what you're referring to we might be able to make something work for you without writing any code. If, on the other hand, you are looking for GeoEvent Server's inbound adapter to iterate over a variable number of JSON objects or discrete data values in an array ... that isn't something we have included in our product road map. GeoEvent Server's support for hierarchy and multicardinality is actually pretty limited and we drew the line quite some time ago at providing some sort of configurable iterator to iterate over a variable list of values in order to perform processing on each value. There are some really powerful things you can do using regular expressions and a series of Field Calculator processors. You might check out this thread for an example. Switching to your request for pagination for web service service(s), this is a pretty broad topic. There is no standard I'm aware of for how a given external web service might elect to communicate to a client that data retrieval should be performed as a series of queries rather than receiving all of the data as part of a single response to a single query. For example, the ArcGIS REST API for feature services specifies that a client should interpret a feature service returning exceededTransferLimit=true to mean that "there are more query results" and "you should continue to page through the results". GeoEvent Server is able to page through Esri's feature services when querying for a large number of feature records, but I'm not sure how we would implement a general solution for paging through any external web service's content. (I'm actually more familiar with the opposite, when a web service wants to return tens-of-megabytes of data to a client in response to a query and GeoEvent administrators ask how to configure GeoEvent Server to handle such a massive slug of data.) Your third ask, for automatic token renewal, is part of our product backlog. What we want to do is retire, at least, the obsolete "OAuth1" authentication support offered by inbound transports and implement new support for OAuth2 authentication, which I think would include automatic token renewal. Our last research spike into this showed that while OAuth2 is a standard, there are subtle ways a service author can define how the different authorization types are implemented. We can probably develop a connector which supports the OKTA standard of OAuth2, but the effort was put on hold. When discussing this problem with customers I tell them that this is one of the cleanest examples for recommending a custom transport that I can think of. There are a bunch of different ways a web service might ask a client to first authenticate and acquire a token so that a second request (with the token) can be made authorizing a client's request. I don't recall any of my team helping to develop the custom inbound transport (or processor?) you refer to, but you are correct, if the development was completed using the 10.6 version of the GeoEvent Server Java SDK, you should be safe to continue using it for 10.7.x and 10.8.x ... we've no plans for breaking changes to the API which would require the custom component you had Esri build for you to need to be re-compiled. Hope this information is helpful – RJ

‎03-25-2020

Very nicely presented Jake Skinner – I like the RegEx you used in the Field Calculator (Regular Expression). Your pattern match – (,[^,]{0}) – is very tight and well crafted. I do not use that variant of field calculator as often as I use the "regular" Field Calculator with its replaceAll( ) function, which changes how I think about regular expression pattern matching. A regular Field Calculator also allows me to combine operations in a single expression. I tried combining the string replacement and length operations with a slightly different RegEx. I'm not sure that all of the Field Calculator's supported functions can be combined this way, but it appears to work in this case: length(replaceAll(DataString, '[0-9]{1,}[,]*', 'x')) The above RegEx matches one-or-more digits (zero to nine) with a trailing comma (if one exists) and accepts a final numeric identifier without a comma as the last in the delimited list. Each identifier is replaced with a single literal 'x' so that the length( ) function can simply count the number of x characters. Seems to work for empty string (""), single identifier ("12345"), and multiple identifiers ("689102,0256,651,74290") ... returning lengths of 0, 1, and 4 respectively. Null strings are a special case; tests I ran suggest that if GeoTagger found no points in a precinct's polygon and chose to assign a NULL value to the GeoTags field rather than an empty string (I can never remember which value it chooses), the combined expression will produce a NULL value, So your final filter – rather than checking count > 0 – could check NOT(count ISNULL) allowing you to also update districts with a count of zero. This might be important if a precinct was previously updated with n>0 crimes and things got quiet so the crimes count needed to be reduced back to zero. Also, to cross-link to another topic/trick, if you do not want to carry the burden of mapping a bunch of fields whose values you do not intend to change (command_code, patrol_boro, sq_miles, category, etc.) you could use a Partial GeoEvent Definition with only two fields to update the count for each precinct feature record. Assuming precinct is your event record's TRACK_ID and unique feature identifier field, a GeoEvent Definition with only two fields (precinct and count) would protect against accidental changes to other fields by using precinct to identify which feature record to update and then only update the count for that precinct. Thanks for the write-up – RJ

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