Unreleased changes

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v31.3.0 (2020-07-10)

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  • General
    • Remove locale from baseline ping. (1609968, #1016)
    • Persist X-Debug-ID header on store ping. (1605097, #1042)
    • BUGFIX: raise an error if Glean is initialized with an empty string as the application_id (#1043).
  • Python
    • BUGFIX: correctly set the app_build metric to the newly provided application_build_id initialization option (#1031).
    • The Python bindings now report networking errors in the glean.upload.ping_upload_failure metric (like all the other bindings) (#1039).
    • Python default upgraded to Python 3.8 (#995)
  • iOS
    • BUGFIX: Make LabeledMetric subscript public, so consuming applications can actually access it (#1027)

v31.2.3 (2020-06-29)

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  • General
    • Move debug view tag management to the Rust core. (1640575, #998)
    • BUGFIX: Fix mismatch in events keys and values by using glean_parser version 1.23.0.

v31.2.2 (2020-06-26)

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  • Android
    • BUGFIX: Compile dependencies with NDEBUG to avoid linking unavailable symbols. This fixes a crash due to a missing stderr symbol on older Android (#1020)

v31.2.1 (2020-06-25)

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  • Python
    • BUGFIX: Core metrics are now present in every ping, even if submit is called before initialize has a chance to complete. (#1012)

v31.2.0 (2020-06-24)

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  • General
    • Add rate limiting capabilities to the upload manager. (1543612, #974)
  • Android
    • BUGFIX: baseline pings with reason "dirty startup" are no longer sent if Glean did not full initialize in the previous run (#996).
  • Python
    • Support for Python 3.5 was dropped (#987).
    • Python wheels are now shipped with Glean release builds, resulting in much smaller libraries (#1002)
    • The Python bindings now use locale.getdefaultlocale() rather than locale.getlocale() to determine the locale (#1004).

v31.1.2 (2020-06-23)

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  • General
    • BUGFIX: Correctly format the date and time in the Date header (#993).
  • Python
    • BUGFIX: Additional time is taken at shutdown to make sure pings are sent and telemetry is recorded. (1646173, #983)
    • BUGFIX: Glean will run on the main thread when running in a multiprocessing subprocess (#986).

v31.1.1 (2020-06-12)

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  • Android
    • Dropping the version requirement for lifecycle extensions down again. Upping the required version caused problems in A-C.

v31.1.0 (2020-06-11)

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  • General:
    • The regex crate is no longer required, making the Glean binary smaller (#949)
    • Record upload failures into a new metric (#967)
    • Log FFI errors as actual errors (#935)
    • Limit the number of upload retries in all implementations (#953, #968)
  • Python
    • Additional safety guarantees for applications that use Python threading (#962)

v31.0.2 (2020-05-29)

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  • Rust
    • Fix list of included files in published crates

v31.0.1 (2020-05-29)

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  • Rust
    • Relax version requirement for flate2 for compatibility reasons

v31.0.0 (2020-05-28)

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  • General:

    • The version of glean_parser has been upgraded to v1.22.0
      • A maximum of 10 extra_keys is now enforced for event metric types.
      • Breaking change: (Swift only) Combine all metrics and pings into a single generated file Metrics.swift.
        • For Swift users this requires to change the list of output files for the sdk_generator.sh script. It now only needs to include the single file Generated/Metrics.swift.
  • Python:

    • BUGFIX: lifetime: application metrics are no longer recorded as lifetime: user.
    • BUGFIX: glean-core is no longer crashing when calling uuid.set with invalid UUIDs.
    • Refactor the ping uploader to use the new upload mechanism and add gzip compression.
    • Most of the work in Glean.initialize happens on a worker thread and no longer blocks the main thread.
  • Rust:

    • Expose Datetime types to Rust consumers.

v30.1.0 (2020-05-22)

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  • Android & iOS
    • Ping payloads are now compressed using gzip.
  • iOS
    • Glean.initialize is now a no-op if called from an embedded extension. This means that Glean will only run in the base application process in order to prevent extensions from behaving like separate applications with different client ids from the base application. Applications are responsible for ensuring that extension metrics are only collected within the base application.
  • Python
    • lifetime: application metrics are now cleared after the Glean-owned pings are sent, after the product starts.
    • Glean Python bindings now build in a native Windows environment.
    • BUGFIX: MemoryDistributionMetric now parses correctly in metrics.yaml files.
    • BUGFIX: Glean will no longer crash if run as part of another library's coverage testing.

v30.0.0 (2020-05-13)

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  • General:
    • We completely replaced how the upload mechanism works. glean-core (the Rust part) now controls all upload and coordinates the platform side with its own internals. All language bindings implement ping uploading around a common API and protocol. There is no change for users of Glean, the language bindings for Android and iOS have been adopted to the new mechanism already.
    • Expose RecordedEvent and DistributionData types to Rust consumers (#876)
    • Log crate version at initialize (#873)
  • Android:
    • Refactor the ping uploader to use the new upload mechanism.
  • iOS:
    • Refactor the ping uploader to use the new upload mechanism.

v29.1.1 (2020-05-22)

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  • Android
    • BUGFIX: Fix a race condition that leads to a ConcurrentModificationException. Bug 1635865

v29.1.0 (2020-05-11)

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  • General:
    • The version of glean_parser has been upgraded to v1.20.4
      • BUGFIX: yamllint errors are now reported using the correct file name.
    • The minimum and maximum values of a timing distribution can now be controlled by the time_unit parameter. See bug 1630997 for more details.

v29.0.0 (2020-05-05)

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  • General:
    • The version of glean_parser has been upgraded to v1.20.2 (#827):
      • Breaking change: glinter errors found during code generation will now return an error code.
      • glean_parser now produces a linter warning when user lifetime metrics are set to expire. See bug 1604854 for additional context.
  • Android:
    • The PingType.submit() can now be called without a null by Java consumers (#853).
  • Python:
    • BUGFIX: Fixed a race condition in the atexit handler, that would have resulted in the message "No database found" (#854).
    • The Glean FFI header is now parsed at build time rather than runtime. Relevant for packaging in PyInstaller, the wheel no longer includes glean.h and adds _glean_ffi.py (#852).
    • The minimum versions of many secondary dependencies have been lowered to make the Glean SDK compatible with more environments.
    • Dependencies that depend on the version of Python being used are now specified using the Declaring platform specific dependencies syntax in setuptools. This means that more recent versions of dependencies are likely to be installed on Python 3.6 and later, and unnecessary backport libraries won't be installed on more recent Python versions.
  • iOS:
    • Glean for iOS is now being built with Xcode 11.4.1 (#856)

v28.0.0 (2020-04-23)

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  • General:
    • The baseline ping is now sent when the application goes to foreground, in addition to background and dirty-startup.
  • Python:
    • BUGFIX: The ping uploader will no longer display a trace back when the upload fails due to a failed DNS lookup, network outage, or related issues that prevent communication with the telemetry endpoint.
    • The dependency on inflection has been removed.
    • The Python bindings now use subprocess rather than multiprocessing to perform ping uploading in a separate process. This should be more compatible on all of the platforms Glean supports.

v27.1.0 (2020-04-09)

Full changelog

  • General:
    • BUGFIX: baseline pings sent at startup with the dirty_startup reason will now include application lifetime metrics (#810)
  • iOS:
    • Breaking change: Change Glean iOS to use Application Support directory #815. No migration code is included. This will reset collected data if integrated without migration. Please contact the Glean SDK team if this affects you.
  • Python
    • BUGFIX: Fixed a race condition between uploading pings and deleting the temporary directory on shutdown of the process.

v27.0.0 (2020-04-08)

Full changelog

  • General
    • Glean will now detect when the upload enabled flag changes outside of the application, for example due to a change in a config file. This means that if upload is disabled while the application wasn't running (e.g. between the runs of a Python command using the Glean SDK), the database is correctly cleared and a deletion request ping is sent. See #791.
    • The events ping now includes a reason code: startup, background or max_capacity.
  • iOS:
    • BUGFIX: A bug where the metrics ping is sent immediately at startup on the last day of the month has been fixed.
    • Glean for iOS is now being built with Xcode 11.4.0
    • The measure convenience function on timing distributions and time spans will now cancel the timing if the measured function throws, then rethrow the exception (#808)
    • Broken doc generation has been fixed (#805).
  • Kotlin
    • The measure convenience function on timing distributions and time spans will now cancel the timing if the measured function throws, then rethrow the exception (#808)
  • Python:
    • Glean will now wait at application exit for up to one second to let its worker thread complete.
    • Ping uploading now happens in a separate child process by default. This can be disabled with the allow_multiprocessing configuration option.

v26.0.0 (2020-03-27)

Full changelog

  • General:
    • The version of glean_parser has been updated to 1.19.0:
      • Breaking change: The regular expression used to validate labels is stricter and more correct.
      • Add more information about pings to markdown documentation:
        • State whether the ping includes client id;
        • Add list of data review links;
        • Add list of related bugs links.
      • glean_parser now makes it easier to write external translation functions for different language targets.
      • BUGFIX: glean_parser now works on 32-bit Windows.
  • Android:
    • gradlew clean will no longer remove the Miniconda installation in ~/.gradle/glean. Therefore clean can be used without reinstalling Miniconda afterward every time.
  • Python:
    • Breaking Change: The glean.util and glean.hardware modules, which were unintentionally public, have been made private.
    • Most Glean work and I/O is now done on its own worker thread. This brings the parallelism Python in line with the other platforms.
    • The timing distribution, memory distribution, string list, labeled boolean and labeled string metric types are now supported in Python (#762, #763, #765, #766)

v25.1.0 (2020-02-26)

Full changelog

  • Python:
    • The Boolean, Datetime and Timespan metric types are now supported in Python (#731, #732, #737)
    • Make public, document and test the debugging features (#733)

v25.0.0 (2020-02-17)

Full changelog

  • General:
    • ping_type is not included in the ping_info any more (#653), the pipeline takes the value from the submission URL.
    • The version of glean_parser has been upgraded to 1.18.2:
      • Breaking Change (Java API) Have the metrics names in Java match the names in Kotlin. See Bug 1588060.
      • The reasons a ping are sent are now included in the generated markdown documentation.
  • Android:
    • The Glean.initialize method runs mostly off the main thread (#672).
    • Labels in labeled metrics now have a correct, and slightly stricter, regular expression. See label format for more information.
  • iOS:
    • The baseline ping will now include reason codes that indicate why it was submitted. If an unclean shutdown is detected (e.g. due to force-close), this ping will be sent at startup with reason: dirty_startup.
    • Per Bug 1614785, the clearing of application lifetime metrics now occurs after the metrics ping is sent in order to preserve values meant to be included in the startup metrics ping.
    • initialize() now performs most of its work in a background thread.
  • Python:
    • When the pre-init task queue overruns, this is now recorded in the metric glean.error.preinit_tasks_overflow.
    • glinter warnings are printed to stderr when loading metrics.yaml and pings.yaml files.

v24.2.0 (2020-02-11)

Full changelog

  • General:
    • Add locale to client_info section.
    • Deprecation Warning Since locale is now in the client_info section, the one in the baseline ping (glean.baseline.locale) is redundant and will be removed by the end of the quarter.
    • Drop the Glean handle and move state into glean-core (#664)
    • If an experiment includes no extra fields, it will no longer include {"extra": null} in the JSON payload.
    • Support for ping reason codes was added.
    • The metrics ping will now include reason codes that indicate why it was submitted.
    • The version of glean_parser has been upgraded to 1.17.3
  • Android:
    • Collections performed before initialization (preinit tasks) are now dispatched off the main thread during initialization.
    • The baseline ping will now include reason codes that indicate why it was submitted. If an unclean shutdown is detected (e.g. due to force-close), this ping will be sent at startup with reason: dirty_startup.
  • iOS:
    • Collections performed before initialization (preinit tasks) are now dispatched off the main thread and not awaited during initialization.
    • Added recording of glean.error.preinit_tasks_overflow to report when the preinit task queue overruns, leading to data loss. See bug 1609734

v24.1.0 (2020-01-16)

Full changelog

  • General:
    • Stopping a non started measurement in a timing distribution will now be reported as an invalid_state error.
  • Android:
    • A new metric glean.error.preinit_tasks_overflow was added to report when the preinit task queue overruns, leading to data loss. See bug 1609482

v24.0.0 (2020-01-14)

Full changelog

  • General:
    • Breaking Change An enableUpload parameter has been added to the initialize() function. This removes the requirement to call setUploadEnabled() prior to calling the initialize() function.
  • Android:
    • The metrics ping scheduler will now only send metrics pings while the application is running. The application will no longer "wake up" at 4am using the Work Manager.
    • The code for migrating data from Glean SDK before version 19 was removed.
    • When using the GleanTestLocalServer rule in instrumented tests, pings are immediately flushed by the WorkManager and will reach the test endpoint as soon as possible.
  • Python:
    • The Python bindings now support Python 3.5 - 3.7.
    • The Python bindings are now distributed as a wheel on Linux, macOS and Windows.

v23.0.1 (2020-01-08)

Full changelog

  • Android:
    • BUGFIX: The Glean Gradle plugin will now work if an app or library doesn't have a metrics.yaml or pings.yaml file.
  • iOS:
    • The released iOS binaries are now built with Xcode 11.3.

v23.0.0 (2020-01-07)

Full changelog

  • Python bindings:
    • Support for events and UUID metrics was added.
  • Android:
    • The Glean Gradle Plugin correctly triggers docs and API updates when registry files change, without requiring them to be deleted.
    • parseISOTimeString has been made 4x faster. This had an impact on Glean migration and initialization.
    • Metrics with lifetime: application are now cleared when the application is started, after startup Glean SDK pings are generated.
  • All platforms:
    • The public method PingType.send() (in all platforms) have been deprecated and renamed to PingType.submit().
    • Rename deletion_request ping to deletion-request ping after glean_parser update

v22.1.0 (2019-12-17)

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  • Add InvalidOverflow error to TimingDistributions (#583)

v22.0.0 (2019-12-05)

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  • Add option to defer ping lifetime metric persistence (#530)
  • Add a crate for the nice control API (#542)
  • Pending deletion_request pings are resent on start (#545)

v21.3.0 (2019-12-03)

Full changelog

  • Timers are reset when disabled. That avoids recording timespans across disabled/enabled toggling (#495).
  • Add a new flag to pings: send_if_empty (#528)
  • Upgrade glean_parser to v1.12.0
  • Implement the deletion request ping in Glean (#526)

v21.2.0 (2019-11-21)

Full changelog

  • All platforms

    • The experiments API is no longer ignored before the Glean SDK initialized. Calls are recorded and played back once the Glean SDK is initialized.

    • String list items were being truncated to 20, rather than 50, bytes when using .set() (rather than .add()). This has been corrected, but it may result in changes in the sent data if using string list items longer than 20 bytes.

v21.1.1 (2019-11-20)

Full changelog

  • Android:

    • Use the LifecycleEventObserver interface, rather than the DefaultLifecycleObserver interface, since the latter isn't compatible with old SDK targets.

v21.1.0 (2019-11-20)

Full changelog

  • Android:

    • Two new metrics were added to investigate sending of metrics and baseline pings. See bug 1597980 for more information.

    • Glean's two lifecycle observers were refactored to avoid the use of reflection.

  • All platforms:

    • Timespans will now not record an error if stopping after setting upload enabled to false.

v21.0.0 (2019-11-18)

Full changelog

  • Android:

    • The GleanTimerId can now be accessed in Java and is no longer a typealias.

    • Fixed a bug where the metrics ping was getting scheduled twice on startup.

  • All platforms

    • Bumped glean_parser to version 1.11.0.

v20.2.0 (2019-11-11)

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  • In earlier 20.x.x releases, the version of glean-ffi was incorrectly built against the wrong version of glean-core.

v20.1.0 (2019-11-11)

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  • The version of Glean is included in the Glean Gradle plugin.

  • When constructing a ping, events are now sorted by their timestamp. In practice, it rarely happens that event timestamps are unsorted to begin with, but this guards against a potential race condition and incorrect usage of the lower-level API.

v20.0.0 (2019-11-11)

Full changelog

  • Glean users should now use a Gradle plugin rather than a Gradle script. (#421) See integrating with the build system docs for more information.

  • In Kotlin, metrics that can record errors now have a new testing method, testGetNumRecordedErrors. (#401)

v19.1.0 (2019-10-29)

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  • Fixed a crash calling start on a timing distribution metric before Glean is initialized. Timings are always measured, but only recorded when upload is enabled (#400)
  • BUGFIX: When the Debug Activity is used to log pings, each ping is now logged only once (#407)
  • New invalid state error, used in timespan recording (#230)
  • Add an Android crash instrumentation walk-through (#399)
  • Fix crashing bug by avoiding assert-printing in LMDB (#422)
  • Upgrade dependencies, including rkv (#416)

v19.0.0 (2019-10-22)

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First stable release of Glean in Rust (aka glean-core). This is a major milestone in using a cross-platform implementation of Glean on the Android platform.

  • Fix round-tripping of timezone offsets in dates (#392)
  • Handle dynamic labels in coroutine tasks (#394)

v0.0.1-TESTING6 (2019-10-18)

Full changelog

  • Ignore dynamically stored labels if Glean is not initialized (#374)
  • Make sure ProGuard doesn't remove Glean classes from the app (#380)
  • Keep track of pings in all modes (#378)
  • Add jnaTest dependencies to the forUnitTest JAR (#382)

v0.0.1-TESTING5 (2019-10-10)

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  • Upgrade to NDK r20 (#365)

v0.0.1-TESTING4 (2019-10-09)

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  • Take DST into account when converting a calendar into its items (#359)
  • Include a macOS library in the forUnitTests builds (#358)
  • Keep track of all registered pings in test mode (#363)

v0.0.1-TESTING3 (2019-10-08)

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  • Allow configuration of Glean through the GleanTestRule
  • Bump glean_parser version to 1.9.2

v0.0.1-TESTING2 (2019-10-07)

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  • Include a Windows library in the forUnitTests builds

v0.0.1-TESTING1 (2019-10-02)

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General

First testing release.