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Issues with ArcGIS Online webhook

  • December 7, 2020
  • 5 replies
  • 239 views
bracken
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To start out, I am new to FME and to webhooks (or web mapping/web development in general). I am trying to set up a webhook to send an email when a user updates or creates a feature in an ArcGIS Online feature service. I have been able to successfully set up webhooks with Survey123 using the process in this article. Webhooks seem to be a relatively new feature in AGOL. I have only found this Esri article, and it was just from August of this year.

 

The problem I'm having is that I am able to send the webhook to webhook.site and Integromat (as is described in the Esri article linked above), but when I the webhook sends the payload to the webhook trigger in FME server, the log file doesn't give me the JSON that I get from webhook.site and Integromat, I get the following string of characters:

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

 

With setting up the webhook with Survey123, the payload is JSON, so it is easy to parse. I have no idea what is going on here.

I also tried to set up the webhook using a topic, but when I try to run topics, I don't think our topic monitoring is working, because it shuts down after running for about 1 minute and says that "Monitoring has been stopped. There was an error connecting to monitoring service."

We are currently running FME Server 2020.1.0.1.

 

Anyone have any advice for me?

 

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5 replies

bracken
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  • brackenContributor
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  • 4 replies
  • December 7, 2020

I haven't tested it yet, but I just found a transformer in 2020.1.0.0 that will decode the ArcGIS Online webhook. There is a video introducing the transformer and a link to download a workspace with the transformer. The transformer is at https://hub.safe.com/publishers/safe-lab/transformers/arcgisonlinewebhookdecoder#description and the video link (and location of transformer) are in the comments tab of that transformer's page.

nielsgerrits
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  • nielsgerritsVIP
  • 2940 replies
  • December 7, 2020

It should not be very difficult.

No server 2020 experience, but do have Survey123 webhooks connected in 2019.

Steps:

  • Create a simple workspace:
    • Text reader transformer. Any text file will do.
    • Read Whole File at Once = yes.
    • Make sure the source file is a published parameter.
    • Connect a Logger.
  • Publish to server:
    • Check job submitter, click "Edit..."
    • Make sure the Source parameter is selected.
  • In Server:
    • Find the published workspace and open it.
    • Click "Advanced".
    • Click "Create a Webhook"
    • Click "OK"
    • Click "Download" to backup the token.
    • Select the URL under "Authorization with Query String".
  • In Survey123:
    • Open Survey.
    • Go to settings.
    • Create webhook, configure, paste URL.
    • Add a feature with the Survey.
  • In FME Server
    • Check if the job did run.
    • Open the log and look for LOGGER. The Payload will be there.
Buckle your seatbelt Dorothy, cause Kansas is going bye-bye...
nielsgerrits
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  • nielsgerritsVIP
  • 2940 replies
  • December 7, 2020

I haven't tested it yet, but I just found a transformer in 2020.1.0.0 that will decode the ArcGIS Online webhook. There is a video introducing the transformer and a link to download a workspace with the transformer. The transformer is at https://hub.safe.com/publishers/safe-lab/transformers/arcgisonlinewebhookdecoder#description and the video link (and location of transformer) are in the comments tab of that transformer's page.

I tested this with your response and it returns readable json, so probably the way to go.

Buckle your seatbelt Dorothy, cause Kansas is going bye-bye...
bracken
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  • brackenContributor
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  • 4 replies
  • December 14, 2020

I tested this with your response and it returns readable json, so probably the way to go.

Thanks Niels.

bracken
Contributor
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  • brackenContributor
  • Author
  • Contributor
  • 4 replies
  • December 15, 2020

I haven't tested it yet, but I just found a transformer in 2020.1.0.0 that will decode the ArcGIS Online webhook. There is a video introducing the transformer and a link to download a workspace with the transformer. The transformer is at https://hub.safe.com/publishers/safe-lab/transformers/arcgisonlinewebhookdecoder#description and the video link (and location of transformer) are in the comments tab of that transformer's page.

I only had one hitch with the workflow attached to the video at https://hub.safe.com/publishers/safe-lab/transformers/arcgisonlinewebhookdecoder#description, I was not able to use the ArcGISOnlineTokenGetter transformer, because my agency has a SAML login. So Laura at Safe Software helped me change the workflow so it worked for me. I have attached that new workflow.

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