CBG-4286: Add sg prefix to dcp feed names

[RIT3shSapata]

CBG-4286

Describe your PR here...

• Added prefix to DCP feed names as per KV conventions

Pre-review checklist

• Removed debug logging (fmt.Print, log.Print, ...)
• Logging sensitive data? Make sure it's tagged (e.g. base.UD(docID), base.MD(dbName))
• Updated relevant information in the API specifications (such as endpoint descriptions, schemas, ...) in docs/api

Dependencies (if applicable)

• Link upstream PRs
• Update Go module dependencies when merged

Integration Tests

• GSI=true,xattrs=true https://jenkins.sgwdev.com/job/SyncGatewayIntegration/0000/

[Copilot]

Pull request overview

This PR adds the "sg:" prefix to DCP feed names to align with KV (Key-Value) naming conventions. This is a targeted change that standardizes the naming format for Sync Gateway's DCP stream identifiers.

Key Changes

• Modified the DCP stream name format string to include the "sg:" prefix

[torcolvin]

I think this is going to add "sg" to places where SG is already set -

See how this is called through db/import_listener.go and db/change_listener.go

I do try to fix this in #7879 but not entirely.

A good way to see what it used is to add print debugging

sync_gateway/base/dcp_client.go

Line 371 in 693e4b5

dc.agent, agentErr = gocbcore.CreateDcpAgent(agentConfig, dc.ID, flags)

to see the ID and run the integration tests (unfortunately this is SG_TEST_BACKING_STORE=couchbase until #7879, so you could wait for this PR)

The other place this is used is by cbgt for EE import feed https://github.com/couchbase/cbgt/blob/74dbd1c34db313c2b65a65f6e3cecca7eacb00b3/gocbcore_agents.go#L232

It would be good to know the names for each of the dcp feed types we run:

• import feed
• caching feed
• resync background process
• attachment migration background process
• attachment compaction background process

I think that we sort of mix and match names and versions in this.

The other thing I think this PR should do is actually check the value will be <200, since this

sync_gateway/base/dcp_common_test.go

Line 27 in 693e4b5

const maxDCPNameLength = 200

tests in the non production case.