AppSignal for Elixir changelog



  • 03b8306a patch - Bump agent to 06391fb
    • Accept "warning" value for the log_level config option.
    • Add aarch64 Linux musl build.
    • Improve debug logging from the extension.
    • Fix high CPU issue for appsignal-agent when nothing could be read from the socket.


  • 4d72d791 patch - Always return :ok from Appsignal.config_change/3
  • 914f013b patch - Always return the Span from span setter functions, to allow for chaining setter calls with optional values



  • ab876253 patch - Bump agent to v-d573c9b
    • Clean up payload storage before sending. Should fix issues with locally queued payloads blocking data from being sent.
    • Add OpenTelemetry support for the Span API. Not currently implemented in this package's extension.


  • d66ad2d8 patch - Always return the Span from Span.set_attribute/3, making it easier to chain this function call.



  • ffb3ab29 patch - Fix compile-time error with empty configurations
  • c3599ae9 patch - Improve the error message on extension load failure. The error message will now print more details about the installed and expected architecture when they mismatch. This is most common on apps mounted on a container after first being installed on the host with a different architecture than the container.
  • 4ac415f1 patch - Don't crash at compile time when AppSignal is not configured



  • 26be6e58 patch - Fix session data by reverting the sample data key change



  • 65c5d716 patch - Don't set session data when the send_session_data configuration is set to false



  • e287e58c patch - Allow ignoring specific pids through Tracer.ignore/1
  • c325114a patch - Log messages are now sent through a centralised logger, defaulting to logging to the /tmp/appsignal.log file. To log to standard output instead, set the log config property to "stdout".
  • 96c60363 patch - Don't set parameters when the send_params configuration is set to false


  • bb6c7a65 patch - Add the config "override" source to better communicate and help debug when certain config options are set. This is used by the diagnose report. The override source is used to set the new config option value when a config option has been renamed, like send_session_data.

  • 003a2edd patch - The extension installation will no longer fail when the CA certificate file is not accessible.

  • db97b2f6 patch - Bump agent to v-bbc830a

    • Support batched statsd messages
    • Set start times for spans with traceparents
    • Check duration in transactions for negative and too high values
  • 709224ad patch - Bump agent to v-f57e6cb

    • Enable process metrics on Heroku and Dokku



  • 0469f4b2 patch - Add send_session_data option to configure if session data is automatically included in spans. By default this is turned on. It can be disabled by configuring send_session_data to false.


  • ffe65216 patch - Remove Ruby exclusive headers from request_headers defaults.
  • c0a98928 patch - Bump AppSignal agent version to 15ee07b. Add internal tracking of transmission duration.
  • 8c14f827 patch - The diagnose library report now reports the agent version from the committed agent file, rather than the downloaded version, which is reported in the installation report.


  • 0469f4b2 patch - Deprecate skip_session_data option in favor of the newly introduced send_session_data option. If it is configured, it will print a warning on AppSignal load, but will also retain its functionality until the config option is fully removed in the next major release.


  • e4ec8e68 patch - Prefer the value of the log_level config option, instead of the deprecated debug config option, when deciding whether to log a debug message. If log_level does not have a value, or its value is invalid, the values of the deprecated debug and transaction_debug_mode config options are taken into account.



  • 2b78e1e2 patch - Fix debug and transaction_debug_mode log options. If set, previously the log_level would remain "info", since version 2.2.8.



  • 4a9bcca3 patch - Add "log_level" config option. This new option allows you to select the type of messages AppSignal's logger will log and up. The "debug" option will log all "debug", "info", "warning" and "error" log messages. The default value is: "info"

    The allowed values are:

    • error
    • warning
    • info
    • debug
  • 10078177 patch - Add send_environment_metadata config option to configure the environment metadata collection. For more information, see our environment metadata docs.

  • 10078177 patch - Add the Erlang scheduler utilization to the metrics reported by the minutely probes. The metric is reported as a percentage value with the name erlang_scheduler_utilization, with the tag type set to "normal" and the tag id set to the ID of the scheduler in the Erlang VM.


  • 10078177 patch - Bump agent to v-5b63505

    • Only filter parameters with the filter_parameters config option.
    • Only filter session data with the filter_session_data config option.
  • 10078177 patch - Remove the valid key from the diagnose output. It's not a configuration option that can be configured, but an internal state check if the configuration was considered valid.

  • 10078177 patch - Print the extension installation dependencies and flags in the diagnose report output.

  • 10078177 patch - Standardize diagnose validation failure message. Explain the diagnose request failed and why.

  • f3bb8546 patch - Bump agent to v-0db01c2

    • Add log_level config option in extension.
    • Deprecate debug and transaction_debug_mode option in extension.


  • 4a9bcca3 patch - Deprecate "debug" and "transaction_debug_mode" config options in favor of the new "log_level" config option.


  • f40ead99 patch - Remove the unused allocation tracking config option.


  • 10078177 patch - Fix a bug where setting the :phoenix, :filter_parameters configuration key to an allow-list of the form {:keep, [keys]} would apply this filtering to all sample data maps. The filtering is now only applied to the params sample data map.
  • 10078177 patch - Fix the Push API key validator request query params encoding.
  • 10078177 patch - When the Push API key config option value is an empty string, or a string with only whitespace characters, it is not considered valid anymore.
  • 10078177 patch - Transmit the path file modes in the diagnose report as an octal number. Previously it send values like 33188 and now it transmits 100644, which is a bit more human readable.
  • 10078177 patch - Improve parameter and session data filtering options. Previously all filtering was done with one combined denylist of parameters and session data. Now filter_parameters only applies to parameters, and filter_session_data only applies to session data.
  • 10078177 patch - Fix the download of the agent during installation when Erlang is using an OpenSSL version that does not support TLS 1.3, such as versions below OpenSSL 1.1.1.
  • ad0b00f1 patch - Suppress a warning emitted by Telemetry 1.0.0, regarding the performance penalty of using local functions as event handlers, by specifying the module of the captured function.


  • f07f9cf9 patch - Bump agent to 09308fb.
    • Update sql_lexer dependency with support for reversed operators in queries.
    • Add debug level logging to custom metrics in transaction_debug_mode.
    • Add hostname config option to standalone agent.


  • acb7295 patch - Print String values in the diagnose report surrounded by quotes, and booleans as "true" and "false", rather than "yes" and "no". Makes it more clear that it's a value and not a label we print.

  • e71792f patch - Fix diagnose output rendering an additional empty line for the appsignal.log file. It appeared that only 9 lines were printed instead of the 10 expected lines.

  • 422cbd1 patch - Render the install report errors in the diagnose CLI output fewer times. A missing download and/or install report could sometimes be displayed up to two times, in total four errors.

  • f7c0b1e patch - Support mix task diagnose arguments. When an app is released with mix release CLI arguments cannot normally be passed to the diagnose task. Use the eval command pass along the CLI arguments as function arguments.

    mix format
    # Without arguments
    bin/your_app eval ':appsignal_tasks.diagnose()'
    # With arguments
    bin/your_app eval ':appsignal_tasks.diagnose(["--send-report"])'
  • c51c065 patch - Update diagnose output labels to be similar to our other language integrations.

  • 9d3e253 patch - Add new config option to enable/disable StatsD server in the AppSignal agent. This new config option is called enable_statsd and is set to false by default. If set to true, the AppSignal agent will start a StatsD server on port 8125 on the host.


  • e7d676a9 patch - Update SSL configuration for OTP 23 and newer to fix the Cloudfront mirror download during installation.
  • 7ccf75ce patch - Fix install result message to no longer show a success message when an installation failure occurred.


  • 787684bf patch - Installation report improved for download errors. Download errors are more descriptive in the installation result of the diagnose report.


  • b89ab7bc patch - Bump agent to 7376537
    • Support JSON PostgreSQL operator in sql_lexer.
    • Do not strip comments from SQL queries.


  • c6772da3 patch - Fix extension installer from cached source in /tmp directory. This would cause installation errors of the package if the AppSignal package was reinstalled again on a host that already installed it once.


  • a7987f3 patch - Add mirrors to download the agent


  • 1d7b7a3 minor - Use underscores instead of slashes in spans created from decorators. This will change action naming from Module.function/1 to Module.function_1.
  • 7927a3f patch - Bump agent to v-0318770.
    • Improve Dokku platform detection. Do not disable host metrics on Dokku.
    • Report CPU steal metric.


  • 325c985 patch - Add support for telemetry 1.0.0


  • 231abb13 patch - Bump agent to 0f40689
    • Add Apple Darwin ARM alias.
    • Improve appsignal.h documentation.
    • Improve transaction debug log for errors.
    • Fix agent zombie/defunct issue on containers without process reaping.


  • 2531288d patch - Fix Apple ARM detection. It wasn't properly detected as an Apple ARM host because the installer did not account for an architecture String a without 32/64-bit indicator.


  • 0e2cd629 patch - Only create root spans from transaction and channel action decorators, as they're meant to only be used when no span exists yet.


  • 4ba38f9 patch - Bump agent to v-891c6b0. Add experimental Apple Silicon M1 ARM64 build.


  • 523e229e patch - Bump agent to version that is compatible with different error grouping types.


  • 76a31400 patch - Add Linux ARM override value to diagnose report. This was omitted from the original implementation of the APPSIGNAL_BUILD_FOR_LINUX_ARM flag.
  • 07d1ea17 patch - Bump agent to c2024bf with appsignal-agent diagnose timing issue fix when reading the report and improved filtering for HTTP request transmission logs.


  • b2c888dc patch - Update APPSIGNAL_BUILD_FOR_MUSL behavior to only listen to the values 1 and true. This way APPSIGNAL_BUILD_FOR_MUSL=false is not interpreted to install the musl build.
  • f467daf9 patch - Add Linux ARM 64-bit experimental build, available behind a feature flag. To test this set the APPSIGNAL_BUILD_FOR_LINUX_ARM flag before compiling your apps: export APPSIGNAL_BUILD_FOR_LINUX_ARM=1 <command>. Please be aware this is an experimental build. Please report any issue you may encounter at our support email.
  • b8075176 patch - Use MapSets for Monitor's internal monitor list. As uniqueness is guaranteed (you can't monitor a particular pid more than once), MapSet is a better data structure to store this information, since all its operations are constant-time instead of linear-time.
  • Track erlang_atoms gauge in erlang probe. This reports the atom_limit and atom_count metrics. PR #651


  • Keep internal list of monitors in Appsignal.Monitor process. PR 648


  • Fix Appsignal.logger debug level issue on no config present. PR #644
  • Bump agent to d08ae6c. PR #645. Fix span API related issues with empty events for error samples and missing incidents.


  • Add Appsignal.Logger to only log debug messages when the :debug configuration is turned on. PR #642


  • Ensure the :request_headers config returns an empty list by default. PR #637


  • Use pid from conn in Error.Backend if available. PR #631


  • Make sure|t)_error is properly delegated. PR #629


  • Probes.handle_info/2 handles non-exception errors. PR #626


  • Pass functions to set error PR #622
  • Pass Elixir exceptions to|nd)_error/2. PR #620


  • Clear warnings. PR #623


  • Let set error use root span. PR (#611)
  • Bump agent to v-44e4d97
    • Implement ignore namespaces for spans. PR #645


  • Monitor all registered spans. PR #608
  • Switch to reference-based child Span API, fixes memory leak when using child spans. PR #607


  • Don't register query spans without parents. PR #600


  • Bump agent to v-c55fb2c
    • Fix ignore actions and spans without names bugs. PR #639


  • Bump agent to v-f9d2b57
    • Add error counts to map for spans. PR #638


  • Use "channel" namespace in channel_action decorator. PR #596


  • Ignore unhandled info, code_change and terminate in Error.Backend. PR #594
  • Explicitly ignore returns from Span functions. PR #593


  • Set categories from transaction_event/3 decorator fallback. PR #583
  • Remove Plug and Phoenix fallbacks in favour of post-install message. PR #582
  • Bump agent to v-881e3b3
    • Agent writes diagnose to file, extension reads from file. PR #628
    • Ignore actions when creating span payload. PR #630
    • Update Cargo.lock after bumping probes-rs and running cargo update. PR #633
  • Bump agent to v-5b16a75
    • Fixed a version mismatch issue in the agent which caused no samples to be processed
  • Bump agent to v-38010f3
    • Use Rust 1.46.0 and spawn agent without waiting for it. PR #618
  • Set category names in demo command Commit dd5a4c019f403a5c55be0f4f07bda8d85385aef4
  • Add Repo configuration. PR #578
  • Link AppSignal config when config/config.exs does not exist. PR #577
  • Set category from Appsignal.Instrumentation.instrument/3 Commit c8a789e9ff5dfe0d5a522448a923f94a1f54b63d
  • Add debug log lines on handler attachment Commit 44f594dc6c4fa00b0ecb329aea16907cb106a67a Commit 23a9cd0bf063e96c9b87ca2b2cf797ab96d4f96b Commit a0ac8566f1d200152748b98f938ba78813767f9e
  • Bump agent to v-c8f8185. PR #575
  • Implement _set_span_namespace. PR #576
  • Tracer handles registry being down Commit 86e433e42ebfd080d5a1f8450f9a29784ef2d4d9
  • Handle nil-spans in span.set_namespace/2 Commit d0f5d9d96890f0caaa80c58c7a34a343b722591e
  • Restore Appsignal.send_error/3 and Appsignal.set_error/3. PR #574
  • Remove unused module attributes from Appsignal module
  • Switch to span-based API
  • Reimplement error handling
  • Reimplement Ecto integration
  • Split out Plug integration into separate library
  • Split out Phoenix integration into separate library
  • Bump agent to v-a21a12a


  • Bump agent to v-20f7d0d
    • Spawn agent without waiting for it. PR #618
    • Agent writes diagnose to file, extension reads from file. PR #628


  • Bump agent to v-4548c88
    • Fix issue with host metrics values being reported as "Infinity". PR #572


  • Add callback for TransactionBehaviour.set_sample_data/2. PR #560
  • Use tls 1.3 cipher suites on OTP 23. PR #571


  • Handle non-string-non-atom-non-iteger values in Transaction.to_s/1 Commit 772cb943b6d545942a50042a268d441973adab23


  • Use __STACKTRACE__ /0 on Elixir >= 1.7. PR 559
  • Relax live_view dependency to allow versions over 0.9. PR #558
  • Bump agent to v-96b684b
    • Check if queued payloads are for correct app and not expired


  • Add LiveView instrumentation helpers. PR #549
  • Fix typespec for Appsignal.Phoenix.Channel.channel_action/4. PR #553
  • Add record event callback to TransactionBehaviour. PR #555


  • EventHandler handles router_dispatch events with plug_opts #547


  • Add explicit error handling for Phoenix channels. PR #527

  • Add Phoenix Telemetry event handler to add Phoenix 1.5 instrumentation. PR #528 & #538

    Before version Phoenix version 1.5. AppSignal’s Phoenix instrumentation depended on data from the Phoenix instrumenter, and the installation instructions included a step to attach AppSignal’s instrumenter to your application in your app’s configuration:

    config :appsignal_phoenix_example, AppsignalPhoenixExampleWeb.Endpoint,
      instrumenters: [Appsignal.Phoenix.Instrumenter]

    From Phoenix 1.5 on, the old Phoenix instrumentation is deprecated and removed in favor of the new Telemetry-based instrumentation. When upgrading to Phoenix 1.5, you’ll see a warning during compilation when using the old instrumenters:

    [warn] :instrumenters configuration for
    AppsignalPhoenixExampleWeb.Endpoint is deprecated and has no effect

    To switch to the new instrumentation, make sure you're running version 1.12.0 of the AppSignal integration or higher. Then, remove the instrumenters configuration option from your endpoint configuration. The new instrumentation should appear automatically in your samples as an event named call.phoenix_endpoint.


  • Reduce calls to pids_and_monitor_references/1 and :ets.match/1 #543. PR #543


  • Return the Ecto.LogEntry even if the transaction is nil. PR #542


  • Call pids_and_monitor_references/1 from TransactionRegistry. PR #541


  • Use a complete set of ssl_options for Hackney. PR #534


  • Add transaction_debug configuration option. PR #526
  • Bump agent to v-c348132
    • Improve transmitter logging on timeout
    • Improve queued payloads transmitter. Should prevent payloads being sent multiple times.
    • Add transaction debug mode
    • Wrap Option in Mutex in TransactionInProgess


  • Transaction.set_action/2 returns the Transaction on failure. commit 16e5ecbc90aece993177da7e1b2486fa477e25e8
  • Don't match on :ok on Appsignal.Plug.finish_with_conn/2. commit ebc7dd968a9bbeff3447e8f84dab181205f976ed


  • Run receiver monitors in receiver process. PR #525.
  • Move action nil-check to Appsignal.Transaction.set_action/2. PR #523.


  • Don't match on return from Transaction.complete/1. PR #521


  • Convert time units for all Ecto callbacks. PR #481
  • Deactivate AppSignal when not active. PR #478
  • Fix FreeBSD compilation. PR #484
  • Extract ETS and Receiver logic from TransactionRegistry. PR #505
  • Add support for both Jason and Poison. PR #506
  • Add Erlang Run Queue length metric. PR #492
  • Filter structs in MapFilter. PR #507


  • OTP 22.1 hackney workaround for honor_cipher_order. PR #516
  • Bump agent to v-690f4b8 - commit 5245f919d975135d553a89b019c421e1fe27edd3
    • Validate transmission_interval option.


  • Bump agent to v-e1c9363
    • Better detect zombie/defunct processes on containers and consider the processes dead. This should improve the appsignal-agent start behavior.
    • Detect revision from Heroku dynos automatically when Dyno Metadata is turned on.



  • Restore getfilter(parameters|session_data) to patch backwards compatibility. PR #500


  • Support parameter filtering with {:keep, params}. PR #499


  • Handle non-maps in PR #495
  • Use Phoenix >= 1.2.0 and < 1.4.0 on Elixir 1.3. PR #496


  • Fix musl detection on installation. PR #493


  • Use the bundled certificate and ciphers when downloading agent (#491)
  • Explicitly set ciphers in hackney https requests (#489)
  • Remove log statements from TransactionRegisty (#490)
  • Improve ldd version error handling (#487)


  • Remove explicit ignore check in TransactionRegistry. PR #480
  • Handle errors in Mix.Appsignal.Helper.uid/0. PR #479


  • Handle atom keys in MapFilter.filter_values/2. PR #475


  • Track memory metrics of the current process. PR #473


  • Fix memory leak in custom metrics key names. Commit 91c65e51cc949e66b3f504444f3570858a598352


  • Add enable_minutely_probes config option. PR #470
  • Tag hostnames in ErlangProbe. PR #469
  • Don't use fetch_env!/2 in ErlangProbe. PR #471


  • Store extension installation details in report. PR #433
  • Fail AppSignal extension installation on warnings Commit 7b17a0b86f87ea7097315d1247ccd52c78be8e97
  • Rescue make command errors Commit 69efc629eaa0a3f3a3e2d8c3871f3c7bba86c151
  • Add response status codes to Plug samples. PR #453
  • Use :logger instead of :error_logger on OTP >= 21. PR #454
  • Allow to be overridden. PR #464
  • Use proxy from system environment when downloading agent. PR #458
  • Bump agent to 4a275d3 Commit 0635e043d4b299d7ec838f89ca4d36c3ed3792ce
    • Support container CPU host metrics.
    • Support StatsD server in agent.
    • Fix samples being reported for multiple namespaces.
    • Report memory and swap usage in percent using the memory_usage and swap_usage metrics.
  • Add Erlang Probe. PR #466
  • Minutely Probing for Custom Metrics. PR #461


  • Update Ecto integration to support both Telemetry 0.3.x and 0.4.x. PR #459


  • Support send_params option. PR #456


  • Fix multi user permission issue for agent directories and files. Commit fdd650097b702a8aa60ee90ee93ad4e3e3365d81


  • Block on ignoring PIDs in TransactionRegistry. PR #448


  • Add missing host OS field to diagnose report. PR #418
  • Link back to AppSignal diagnose report page. PR #420
  • Add Error.metadata/2 to extract error metadata. PR #423
  • Format values printed in the diagnose. PR #426
  • Update diagnose paths section. PR #427
  • Add unified ErrorHandler. PR #425
  • Fix appsignal.log default path. PR #429
  • Support container memory host metrics better. PR #431
  • Change files_world_accessible permissions to not make files executable. PR #431
  • Make agent debug logging for disk IO metrics more robust. PR #431


  • Add Appsignal.Ecto.handle_event/4 to support Ecto 3. PR #416
  • Add diagnose command --[no-]send-report option. PR #414
  • Group extension and agent tests in diagnose output. PR #413
  • Add new agent & extension diagnose report keys. PR #412
  • Pretty print lists in diagnose output. PR #408
  • Add :poison to :applications. PR #404
  • Add :hackney to :applications. PR #403
  • Allow Appsignal.send_error/1-7 to be called without a stack trace. PR #400
  • Use instead of in mix helpers. PR #399


  • Fix linking issues on multi-stage build setups. PR #406


  • Add working_directory_path config option. PR #363
  • Use doubles values in custom metrics functions. PR #384
  • Support Elixir 1.7. PR #386


  • Ensure ca_file_path is written to agent env. PR #381
  • Use gmake over make when gmake executable exists. PR #382


  • Fix absolute path to CA certificate file. PR #380


  • Bundle CA certificate. PR #364
  • Add Appsignal.Transaction.set_namespace/1-2. PR #361
  • Use :hackney instead of cURL to download agent. PR #359


  • Revert container memory metrics fixes. PR #370
  • Fix _APP_REVISION read logic in extension. PR #370
  • Fix _APPSIGNAL_PROCESS_NAME read logic in extension. PR #370


  • Add container memory metrics fixes.
  • Use local agent environment instead of system environment. PR #368


  • Allow calling Transaction.register/1 and Transaction.complete/1 when the Registry is not alive. PR #356


  • Overwrite message for Phoenix.ActionClauseError. PR #355


  • Remove script_name, query_string and peer from Plug.extract_sample_data/1. PR #351


  • Merge instead of ignore Phoenix's :filter_parameters if also configured in AppSignal. PR #349


  • Remove request_headers warning and use sane default. PR #346
  • Fix metrics format for internal agent metrics. PR #347


  • Explicit header whitelist in configuration (#336)
  • Add filter_session_data config option (#343)
  • Log with :info level instead of :warn when AppSignal is disabled (#340)
  • Remove default hostname (#339)
  • Remove filter_parameters config for extension (#337)
  • Demonitor processes when the transaction completes (#333)
  • Hard-remove transactions from the Registry (#332)
  • Accept tags for (custom) metrics (#331)
  • Don't register Transactions created by Appsignal.send_error/7 (#330)
  • Remove transaction when calling Transaction.complete (#329)
  • Add :request_headers and APPSIGNAL_REQUEST_HEADERS configuration (#327)
  • Filter arguments in backtraces (#326)
  • Relax :httpoison dependency to allow ~> 1.0 (#322)


  • Add agent.exs file to package in mix.exs (#323)
  • Restore :revision config (#315)
  • Underscored environment variables are always overwritten (#316)
  • Move compilation helper functions to mix_helpers.exs (#314)
  • Use "unknown" as action for Plug-only transactions, set action before call/2 (#311)
  • Bump agent to ca32965 (#310, #315)
    • Underscore _APP_REVISION environment variable.
    • Unset revision config option when the APP_REVISION environment variable only contains an empty string.
    • Fix locking issue on diagnose mode run
    • Increase stored length of error messages


  • Fix POST parameters in errors, take the Plug.Conn from Plug.Conn.WrapperErrors (#309)


  • Add x-real-ip to request header whitelist (#308)
  • ErrorHandler doesn't cause warnings for noise over handle_info (#304)


  • Fix transaction metadata for send_error (#303)
  • Use Application.load/1 in diagnose task (#297)
  • Fix DataEncoder.encode error (#293)
  • Update agent to fix locking issue in diagnose (#300)


  • Fix compile errors on Elixir 1.6 (#298)


  • Wrap WrapperError clause in Appsignal.plug? (#291)
  • Don't use Plug.ErrorHandler.catch/4 in Appsignal.Plug (#287)


  • Ensure the appsignal application is started when running diagnose (#286)


  • ErrorHandler unwraps Plug.Conn.WrapperError (#281)
  • Fetch request_id in Appsignal.Plug.extract_meta_data/1 (#283)


  • Fix dialyzer linting violations. (#271)
  • Fix logger error on failed installation. (#275)
  • Reuse Appsignal.agent module by unloading it after use in mix.exs. (#277)


  • Change log level from info to debug for value comparing failures. Commit 76fafebba5e37cfd2c303c286271f4616cf63bd3
  • Collect free memory host metric. Commit 76fafebba5e37cfd2c303c286271f4616cf63bd3


  • Use musl build for older systems (#274)


  • Add separate GNU linux build. PR #265 and Commit b9546cae01cd89d597586ad6c7dc4b5213fe2fca
  • Add separate FreeBSD build Commit b9546cae01cd89d597586ad6c7dc4b5213fe2fca
  • Auto restart agent when none is running Commit b9546cae01cd89d597586ad6c7dc4b5213fe2fca


  • Fix crashes when using a transaction from multiple processes in an unsupported way. Commit b9546cae01cd89d597586ad6c7dc4b5213fe2fca
  • Allow string values in atom config fields (#269)


  • Allow multiple calls to send_error in one Transaction (#260)


  • Allow configuration of permissions of working directory. (#246)
  • Fix locking bug that delayed extension shutdown. Commit 1953b2abced8c477af3eb973cc71b98c20761b51
  • Log extension start with app revision if present Commit 1953b2abced8c477af3eb973cc71b98c20761b51


  • No channel payloads in the channel_action decorator (#255)
  • Add architecture for elixir:alpine Docker image (#256)


  • Don't crash with unbound channel payloads (#253)


  • Appsignal.Phoenix.Channel.channel_action/5 includes channel parameters (#251)
  • Add files world accessible option to config (#246)


  • Plug support without Phoenix
  • Transaction.set_request_metadata sets path and method
  • Add arch mapping for 32bit linux
  • Check if curl is installed before calling it
  • Add ignore_namespaces option
  • Whitelist request headers


  • Add architecture mappings for 32bit systems. (#229)


  • Better backtraces for linked processes (#207)
  • Backtrace.format_stacktrace handles lists of binaries (#214)


  • Allow nil transaction in instrumentation (#198)
  • ErrorHandler handles errors in tuples (#201)
  • Set env: Mix.env in generated config.exs (#203)
  • Improve registry lookup performance (#205)


  • Catch and handle errors in the Plug using Plug.ErrorHandler instead of in Appsignal.ErrorHandler (#187 & #193)


  • Fix unpacking agent tar as root (#179)
  • Add Instrumentation.Helpers.instrument/3
  • Add Appsignal.Backtrace, deprecate ErrorHandler.format_stack/1


  • Depend on Phoenix >= 1.2.0 instead of ~> 1.2.0 (#167)
  • Reload the config in a separate process (#166)
  • Add action names to exceptions (#162)


  • Fix propagation of transaction decorator return value (#164)


  • Force the agent to run in diagnostics mode even if the app's config doesn't have AppSignal marked as active. (#132 and #160)
  • Remove duplicate config file linking output in installer (#159)
  • Upon install deactivate test env if available rather than activate any other env (#159)
  • Print missing APPSIGNAL_APP_ENV env var in installation instructions. (#161)


  • Remove extra comma from generated config/appsignal.exs (#158)


  • Remove (confusing revision logic) (#154)


  • Bump to 1.0.0 🎉


  • Send demo samples on install (#136)
  • Make mix tasks available in releases (#146)
  • Rename Phoenix framework event names (#148)
  • Open and close Transactions in (#131)


  • Move package version to a module attribute (#143)


  • Bump agent to 5464697
  • Check agent version in Mix.Appsignal.Helper.ensure_downloaded/1 (#141)


  • Upgrade HTTPoison and allow more versions


  • Add mix appsignal.diagnose task (#81)
  • Auto activate when push_api_key in env, not always (#89)
  • Bump agent to f81fe90
  • Implement running_in_container detection.
  • Fix DNS issue with musl and resolv.conf using "search" on the first line of configuration.
  • Use agent.ex instead of agent.json, drop Poison dependency (#115)
  • DataEncoder encodes bignums as strings (#88)
  • Remove automatic :running_in_container setting (moved to agent)


  • Send body->data instead of body to appsignal_finish_event


  • Bump agent to version with extra null pointer protection


  • Bump agent (360f06b)


  • Update musl version to fix DNS search issue (a8e6f23)


  • Add support for non-strings as map values in DataEncoder.encode/1 (#83)


  • Add phoenix as optional dependency to :prod (#80)
  • Add the module name to the transaction action while using decorators (#79)


  • Re-initialize Appsignal's config after a hot code upgrade. (#71)
  • Send all request headers (#75)
  • Add ErrorHandler.normalize_reason (#78)
  • Elixir 1.4 compatibility
  • Add fix for grabbing filter_parameters from Phoenix (#73)
  • Add Alpine linux (#77)
  • Add appsignal.demo mix task (#69)
  • Drop Phoenix dependency #61


  • Check Appsignal.started?/1 in TransactionRegistry.lookup/2 (#54)
  • Various configuration fixes (#55)
  • The agent logs to STDOUT on Heroku (#60)
  • Add a transcation decorator (#62)
  • Update agent to 5f0c552 (#64)
  • Enable host metrics by default (#66)
  • DataEncoder.encode/2 handles tuples (#68)
  • Registry.register/1 returns nil if Appsignal is not started (#70)
  • Appsignal.Transaction.set_error/4 handles unformatted stacktraces (#72)
  • Fix missing paren warnings in Elixir 1.4 (#59)
  • Add support to refs and pids inside payloads (#57)
  • Add centos/redhat support for agent installation (#48)


  • Fix Makefile for spaces in path names
  • Set APPSIGNAL_IGNORE_ACTIONS from config (#41)
  • Send metadata in Appsignal.ErrorHandler.submit_transaction/6 (#40)
  • Add a section suggesting active: false in test env (#35)


  • Appsignal.Helpers has been moved to Appsignal.Instrumentation.Helpers


  • Remove instrumentation macros, switch to decorators
  • Update channel decorators documentation
  • Documentation on instrumentation decorators
  • Let Appsignal.{set_gauge, add_distribution_value} accept integers (#31)
  • Implement Appsignal.send_error (#29)
  • Add documentation for filtered parameters (#28)
  • Appsignal.Utils.ParamsEncoder.preprocess/1 handles structs (#30)


  • Experimental support for channels
  • Add instrument_def macro for defining a single instrumented function
  • Document that we are using a NIF and how it is used
  • Simplified transaction functions no longer raise
  • Don't warn about missing config when running tests
  • remember original stacktrace in phoenix endpoint (#26)


  • Allow Phoenix filter parameters and/or OS env variable to be used
  • Send Phoenix session information
  • Simplify Transaction API: Default to the current process transaction
  • Add Transaction.filter_values/2
  • Transaction.set_request_metadata/2 filters parameters
  • Fix host metrics config key in GettingStarted