Given the following schema: SpiceDB #spicedb

Given the following schema:

Covey

03/08/2024, 9:29 AM

Given the following schema:

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definition token {}
 
definition service {
    relation token: token
}
 
definition resource {
    relation viewer: service#token
}

Is there a way for me to return all

tokens

in SpiceDB?

Covey

03/08/2024, 9:48 AM

Looks like I can do something like this:

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python
res = client.ReadRelationships(
    spice_db.ReadRelationshipsRequest(
        relationship_filter=spice_db.RelationshipFilter(
            resource_type="service",
            optional_subject_filter=spice_db.SubjectFilter(
                subject_type="token"
            )
        )
    )
)

This returns a response where I can do:

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python
relationship = await res.read()

Is there a way for me to "exhaust" the stream without calling

client.ReadRelationships

again with the cursor-token?

Covey

03/08/2024, 10:15 AM

Aah - I see now that I can just continue calling

res.read()

and check for

EOF

res.done() is True

yetitwo

03/08/2024, 3:06 PM

not sure if it's helpful for your current mental model, but one thing that took me a while to wrap my head around is that spicedb only stores edges, so the notion of "what entities does it store" doesn't really compute

vroldanbet

03/08/2024, 3:40 PM

ReadRelationships is the way to go here, yeah. And yeah the stream will finish when EOF is returned, which means there are no more relationships to read. You can use the cursor to resume if the process stopped at some point

Covey

03/08/2024, 5:51 PM

thx 🙂

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