Enable sentry for local and production dendrite environments (matrix-…

…org#1552)

This PR enables Sentry on a new project in our
[org](https://here-not-there.sentry.io/projects/) for Dendrite both
localhost and remote environment where environment is constructed as the
tuple of `node domain, chainId`. Original sentry support was added
upstream by matrix-org in
[this](matrix-org#1803) PR.

Test issues:

https://here-not-there.sentry.io/issues/3950993903/?query=is%3Aunresolved&referrer=issue-stream

We should check that issues are published from ECS when this PR is
merged.

dendrite-zion.yaml

@@ -50,6 +50,11 @@ global:
     max_idle_conns: 5
     conn_max_lifetime: -1
 
+  sentry:
+    enabled: true
+    dsn: https://[email protected]/4504720094986240
+    environment: ${SERVER_NAME}-chainId:${CHAIN_ID}
+
   # The paths and expiry timestamps (as a UNIX timestamp in millisecond precision)
   # to old signing private keys that were formerly in use on this domain. These
   # keys will not be used for federation request or event signing, but will be

setup/base/base.go

@@ -151,6 +151,9 @@ func NewBaseDendrite(cfg *config.Dendrite, options ...BaseDendriteOptions) *Base
 		if err != nil {
 			logrus.WithError(err).Panic("failed to start Sentry")
 		}
+		defer sentry.Flush(2 * time.Second)
+		sentry.CaptureMessage("Server started")
+
 	}
 
 	var dnsCache *gomatrixserverlib.DNSCache