A service like the JSON-RPC service is opened up, only serving /metrics
requests in a file format for prometheus.
New CLI flags are --metrics-enabled and --metrics-listen, just like the
--rpc and --ws variants of the same.
--host-whitelist is respected the same as the JSON-RPC endpoint.
* Upgrade errorprone
* Upgrade errorprone from 2.3.1 to 2.3.2
* Upgrade Jenkinsfile so that CI will use Java 11
* Suppress these new rules:
* EqualsGetClass
* ImmutableEnumChecker
* UnnecessaryParentheses
* Change code to conform to these new rules:
* BadImport
* BadInstanceof
* InconsistentHashCode
* LockNotBeforeTry
* MathAbsoluteRandom
* ModifiedButNotUsed
* UndefinedEquals
Metrics being captured initially:
Total number of peers ever connected to
Total number of peers disconnected, by disconnect reason and whether the disconnect was initiated locally or remotely.
Current number of peers
Timing for processing JSON-RPC requests, broken down by method name.
Generic JVM and process metrics (memory used, heap size, thread count, time spent in GC, file descriptors opened, CPU time etc).
Upgrade dependency versions
* All version information is merged into one place
* Upgrade most version to their latest non-test version.
* dependencies are now sorted
Two dependencies were not upgraded:
errorprone - There are new checks that require build or source changes.
vertex - The license to eclipse 2.0 which is not in our current approved license list.
The change is trivial but for tracability it should be done alone.