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Ruby agent v3.9.2.239

August 21, 2014


The end-of-life date for this agent version is July 29, 2019. To update to the latest agent version, see Update the agent. For more information, see End-of-life policy.


  • Added API for ignoring transactions

    This release adds three new API calls for ignoring transactions:

    ignore_transaction ignores a transaction completely: nothing about it will be reported to New Relic. ignore_apdex ignores only the Apdex metric for a single transaction. ignore_enduser disables Javascript injection for browser monitoring for the current transaction.

    These methods differ from the existing newrelic_ignore_* method in that they may be called during a transaction based on some dynamic runtime criteria, as opposed to at the class level on startup.

    For more information, see ignoring specific transactions.

  • Improved SQL obfuscation

    SQL queries containing string literals ending in backslash \ characters were not correctly obfuscated by the Ruby agent prior to transmission to New Relic. In addition, SQL comments were left un-obfuscated. This has been fixed, and the test coverage for SQL obfuscation has been improved.

  • newrelic_ignore* methods now work when called in a superclass

    The newrelic_ignore* family of methods previously did not apply to subclasses of the class from which it was called, meaning that Rails controllers inheriting from a single base class where newrelic_ignore had been called would not be ignored. This has been fixed.

  • Fix for rare crashes in Rack::Request#params on Sinatra apps

    Certain kinds of malformed HTTP requests previously caused unhandled exceptions in the Ruby agent's Sinatra instrumentation, in the Rack::Request#params method. This has been fixed.

  • Improved handling for rare errors caused by timeouts in Excon requests

    In some rare cases, the agent would emit a warning message in its log file and abort instrumentation of a transaction if a timeout occurred during an Excon request initiated from within that transaction. This has been fixed.

  • Improved behavior when the agent is misconfigured

    When the agent is misconfigured by attempting to shut it down without it ever having been started, or by attempting to disable instrumentation after instrumentation has already been installed, the agent will no longer raise an exception, but will instead log an error to its log file.

  • Fix for ignore_error_filter not working in some configurations

    The ignore_error_filter method allows you to specify a block to be evaluated in order to determine whether a given error should be ignored by the agent. If the agent was initially disabled, and then later enabled with a call to manual_start, the ignore_error_filter would not work. This has been fixed.

  • Fix for Capistrano 3 ignoring newrelic_revision

    New Relic's Capistrano recipes support passing parameters to control the values recorded with deployments, but user-provided :newrelic_revision values were incorrectly overwritten. This has been fixed.

  • Agent errors logged with ruby-prof in production

    If the ruby-prof gem was available in an environment without New Relic's developer mode enabled, the agent would generate errors to its log. This has been fixed.

  • Tighter requirements on naming for configuration environment variables

    The agent would previously assume any environment variable containing NEWRELIC was a configuration setting. It now looks for this string as a prefix only.

    Thanks to Chad Woolley for the contribution!

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