feat: Relayer tracing

.env.example

@@ -24,6 +24,8 @@ E2E_PROOF_TYPE=groth16
 # Either an empty string, or 'local', means it will use the local binary in the repo, unless running in mock mode
 # Otherwise, it will download the binary from the release at the specified tag
 E2E_WASM_LIGHT_CLIENT_TAG="cw-ics08-wasm-eth-vX.Y.Z"
+# Optional for enabling relayer to connect to local observability stack (see scripts/local-grafana-stack)
+ENABLE_LOCAL_OBSERVABILITY=false
 
 # URL of the Tendermint RPC node for SP1 fixture generation
 TENDERMINT_RPC_URL=http://public-celestia-mocha4-consensus.numia.xyz/

Cargo.toml

@@ -127,6 +127,15 @@ cosmwasm-schema = { version = "2.2", default-features = false }
 cosmwasm-std    = { version = "2.2", default-features = false }
 cw2             = { version = "2.0", default-features = false }
 
+moka = { version = "0.12", features = ["future"] }
+uuid = { version = "1.18", default-features = false }
+
+# OpenTelemetry
+opentelemetry         = { version = "0.30", default-features = false }
+opentelemetry-otlp    = { version = "0.30", default-features = false }
+opentelemetry_sdk     = { version = "0.30", default-features = false }
+tracing-opentelemetry = { version = "0.31", default-features = false }
+
 # The dependencies below are maintained by Sigma Prime (for use in Lighthouse (and the broader Ethereum ecosystem))
 ethereum_ssz        = { version = "0.9", default-features = false }
 ethereum_ssz_derive = { version = "0.9", default-features = false }