RSS

The RSS feed type in ArcGIS Velocity sends an HTTP or HTTPS request to the specified RSS URL at a user-defined interval. The request collects RSS data that can be retrieved in a web browser by browsing to a URL.

Examples

Les exemples suivants illustrent des cas d’utilisation du flux :

• A GIS analyst wants to configure a feed to load the latest earthquake data at a defined interval from an RSS feed available on the internet.
• Updated sensor values are loaded from an RSS feed every minute.

Usage notes

Gardez les points suivants à l’esprit lorsque vous utilisez le flux :

• The feed polls the website to load data at the rate specified in the Feed Polling Interval step of the configuration wizard.
• When a polling frequency is set, the polling occurs at regular time intervals as opposed to the start time of the feed. For example, if a feed is set to poll for data every five minutes and the feed is started at 8:03 a.m., the first request for data occurs at 8:05 a.m., the next at 8:10 a.m., and so on.
• After configuring source connection parameters, configure input data to define the schema and the key parameters.

Parameters

Les paramètres du flux sont les suivants :

Parameter	Description	Data type
URL	The full URL to the externally accessible RSS website to poll using HTTP requests.	Chaîne
Authentication	The type of authentication used to access the web server. Authentication options are None, Basic, and Certificate.	Chaîne
Username	The username for accessing the website. This parameter only applies when the Authentication parameter is set to the Basic option.	Chaîne
Password	The password for accessing the website. This parameter only applies when the Authentication parameter is set to the Basic option.	Mot de passe
Certificate URL	The URL location of the client certificate for accessing the website. This parameter only applies when the Authentication parameter is set to the Certificate option.	Chaîne
Password	The client certificate password if one is set. This parameter only applies when the Authentication parameter is set to the Certificate option.	Mot de passe
Custom headers	Optional custom headers to be included in the HTTP request sent to the specified HTTP endpoint. For example, custom headers can be used to specify a third-party API key or authorization header.	Paire clé-valeur
Additional logging (Optional)	Specifies whether logging for raw RSS requests and responses issued by Velocity is turned on. Remarque : Use this parameter for troubleshooting purposes and turn it off when troubleshooting is complete. Once turned on, start the feed; the debug level logs are available on the feed logs page. Contact Esri Technical Support for help with troubleshooting if necessary.	Booléen

Considerations and limitations

Tenez compte des points suivants lorsque vous utilisez le flux :

• The size of the RSS page or file being polled cannot exceed 16 MB. If the RSS page or file being polled exceeds 16 MB, features are not ingested.
• If the user credentials are invalid, the feed retries the connection up to three times. Invalid credentials errors appear in the logs. The feed automatically attempts to restart after a delay, based on the configured recurrence schedule.