Node.js agent release notesRSS

Fixed an inverted if in config loading.

Previously, the config loader would log a warning on success, rather than failure. Configuration loading works as expected now.

Fixed a bug in process.nextTick instrumentation for io.js 1.8.1.

Previously the agent would only pass the callback argument to process.nextTick. This did not cause issues in Node.js and older version of io.js, since additional arguments were ignored. In a recent change to io.js, process.nextTick was changed to pass any additional arguments to the callback, the same way setImmediate does. This change ensures all arguments are handled as expected.

Wrapped all our calls to JSON.parse in try/catch.

Previously, only calls that were considered unsafe due to external data input were wrapped. We are taking a more defensive stance and wrapping them all now.

Timers attached to global are now instrumented correctly in all version of io.js.

As of v1.6.3 of io.js, timers are no longer lazily loaded from the timers module, and are placed directly on the global object. The agent now takes this change into account and accurately wraps the timer methods.

Improved handling of cross-application tracing headers.

Paths that include multibyte characters will now show up correctly in cross application maps

Names assigned to errors via Error.name now appear in the UI.

Previously, the name of an error in the UI appeared as Error.constructor.name or with a default of Error. Now the common pattern of Error.name is respected and takes precedence.

Child segments of external calls will now be nested correctly.

This change causes segments that make up external calls to nest under the call correctly. Previously, the child segments appeared as siblings to external calls.

The request_uri attribute on errors will now only include the path without any parameters.

This behavior now matches the other New Relic agents.

Reduce agent CPU overhead by omitting setImmediate from traces.

The change to setImmediate makes that function behave the same way as nextTick and other frequently-called functions that are already elided from Transaction Traces.

Mitigate a Node.js memory leak that can occur during TLS connections.

There is an outstanding Node.js Core memory leak involving TLS connections. Clients specifying certificates, such as the New Relic Agent, quickly reveal this leak. We now mitigate this issue by using the default client certificates where possible. A new log message will be printed when the TLS memory leak workaround can not be used, such as when using a custom certificate with an HTTPS proxy.

Added instrumentation for modules in Node core.

Added support for native Promises in Node.js 0.12 and io.js 1.x.

Traces will now contain separate segments for async waits and callbacks.

Updated instrumentation for MongoDB to support previously un-instrumented methods for 1.x and 2.x versions of the node-mongodb-native driver.

Fixed a bug in the recording of transaction metrics. Previously this would cause a duplicate of the transaction metric to be displayed in the transaction breakdown chart

Unified view for SQL database and NoSQL datastore products.

The response time charts in the application overview page will now include NoSQL datastores, such as Cassandra and MongoDB,and also the product name of existing SQL databases such as MySQL, Postgres, Oracle, etc. For existing SQL databases, in addition to the existing breakdown of SQL statements and operations, the queries are now also associated with the database product being used. For NoSQL datastores, such as Cassandra and MongoDB, we have now added information about operations performed against those products, similar to what is being done for SQL databases.

This new unified Databases page will enable the filtering of metrics and operations by product, and includes a table listing all operations.

Because this introduces a notable change to how SQL database metrics are collected, it is important that you upgrade the agent version on all hosts. If you are unable to transition to the latest agent version on all hosts at the same time, you can still access old and new metric data for SQL databases, but the information will be split across two separate views.