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Sample Stomp message queue consumer code for Fedora
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--Headers: { | |
"destination": "/topic/fedora", | |
"expires": "0", | |
"message-id": "ID:wikibase-36143-1638450997244-4:1:1:1:6", | |
"org.fcrepo.jms.baseURL": "http://141.94.169.145:8080/rest", | |
"org.fcrepo.jms.eventID": "urn:uuid:cd36ab67-4a51-4e88-96ab-b07acf71d625", | |
"org.fcrepo.jms.eventType": "https://www.w3.org/ns/activitystreams#Create", | |
"org.fcrepo.jms.identifier": "/galaxy", | |
"org.fcrepo.jms.resourceType": "http://mementoweb.org/ns#TimeGate,http://www.w3.org/ns/ldp#BasicContainer,http://fedora.info/definitions/v4/repository#Resource,http://mementoweb.org/ns#OriginalResource,http://www.w3.org/ns/ldp#Container,http://www.w3.org/ns/ldp#Resource,http://www.w3.org/ns/ldp#RDFSource,http://fedora.info/definitions/v4/repository#Container", | |
"org.fcrepo.jms.timestamp": "1638519905399", | |
"org.fcrepo.jms.user": "null", | |
"org.fcrepo.jms.userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36", | |
"persistent": "true", | |
"priority": "4", | |
"subscription": "abcd", | |
"timestamp": "1638519905410" | |
} | |
--Body: { | |
"id": "urn:uuid:cd36ab67-4a51-4e88-96ab-b07acf71d625", | |
"type": ["Create"], | |
"name": "create resource", | |
"published": "2021-12-03T08:25:05.399035Z", | |
"actor": [{ | |
"type": "Person", | |
"id": "null" | |
}, { | |
"type": "Application", | |
"name": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36" | |
}], | |
"object": { | |
"type": ["http://mementoweb.org/ns#TimeGate", "http://www.w3.org/ns/ldp#BasicContainer", "http://fedora.info/definitions/v4/repository#Resource", "http://mementoweb.org/ns#OriginalResource", "http://www.w3.org/ns/ldp#Container", "http://www.w3.org/ns/ldp#Resource", "http://www.w3.org/ns/ldp#RDFSource", "http://fedora.info/definitions/v4/repository#Container", "http://www.w3.org/ns/prov#Entity"], | |
"id": "http://141.94.169.145:8080/rest/galaxy", | |
"isPartOf": "http://141.94.169.145:8080/rest" | |
}, | |
"@context": ["https://www.w3.org/ns/activitystreams#", { | |
"prov": "http://www.w3.org/ns/prov#", | |
"dcterms": "http://purl.org/dc/terms/", | |
"type": "@type", | |
"id": "@id", | |
"isPartOf": { | |
"@id": "dcterms:isPartOf", | |
"@type": "@id" | |
} | |
}] | |
} |
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"""Fedora listener | |
Listens for ActiveMQ messages using the stomp message queue library. | |
The equivalent using stomp itself would look as follows; | |
stomp -H localhost -P 61613 | |
> subscribe /topic/fedora | |
Modified from Lyrasis: | |
* https://wiki.lyrasis.org/display/FEDORAM6M1P0/Inspect+Event+Messages | |
""" | |
import json | |
import stomp | |
import signal | |
class Listener(stomp.ConnectionListener): | |
def on_message(self, frames): | |
print("\n\nIncoming Message") | |
print("--Headers:") | |
print(json.dumps(frames.headers, indent=2, sort_keys=True)) | |
print("\n--Body:") | |
print(json.dumps(frames.body, indent=2, sort_keys=True)) | |
connection = stomp.Connection(host_and_ports=[("localhost", 61613)]) | |
connection.set_listener("", Listener()) | |
connection.connect() | |
connection.subscribe(id="abcd", destination="/topic/fedora") | |
while True: | |
signal.pause() |
Author
ross-spencer
commented
Dec 1, 2021
- Subscribe function in stomp.py.
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