CHANGELOG

Version 3.6.2 GA (10/23/2024)

Enhancements

Update to OpenTelemetry Java Instrumentation 2.9.0 (#3917)
Update azure-monitor-opentelemetry-exporter to 1.0.0-beta.31 (#3917) Note: This version of the exporter includes a fix for restoring self-diagnostic logging

Version 3.6.1 GA (10/09/2024)

Bug fixes

Regression introduced in 3.6.0 where some exception telemetry records were missing a required field causing them to be rejected by the ingestion service (Azure/azure-sdk-for-java#42241)

Version 3.6.0 GA (10/03/2024)

Enhancements

Update to OpenTelemetry Java Instrumentation 2.8.0 (#3871)
Better populate exception type name and message from span events (Azure/azure-sdk-for-java#41397)
Internal migration to Azure Json library (#3790)
Changed live metrics CPU/Memory perf counter metrics to emit normalized process CPU and process physical memory bytes. (Azure/azure-sdk-for-java#42147)

Bug fixes

Disable publication of gradle module metadata for all artifacts (#3836)

Version 3.5.4 GA (07/29/2024)

Bug fixes

Fix possible OOM with Wildfly (#3796)

Enhancements:

Fail to start-up if proxy host contains http or https (#3776)
Help the user to configure the connection string (#3788)
Update browser loader version (#3765)

CVE

Fix CVE-2024-35255 (#3771)

Version 3.5.3 GA (05/24/2024)

Enhancements:

Emit stable OpenTelemetry HTTP metrics (#3676)
Support AAD clientsecret via env var (#3692)
Display a message about sampling at start-up (#3700)
Fail if HTTP status code used in sampling override (#3708)
Fix misleading connection string message (#3709)
Update to OpenTelemetry Java Instrumentation 2.4.0 (#3711)
Introduce explicit option to disable ingestion sampling (#3713)
Remove _APPRESOURCEPREVIEW_ custom metric as it is still in preview (#3710)

Version 3.5.2 GA (04/19/2024)

Enhancements:

Add an env var for disabling logging instrumentation (#3622)
Trim the connecting string (#3629)
Update to OpenTelemetry Java Instrumentation 2.3.0 (#3649)
Reduce logging (#3564)

Version 3.5.1 GA (03/11/2024)

Bug fixes:

Fix sampling overrides for http.target when url.query is present (#3588)
Support url.query from OTel stable HTTP semconv (#3581)
Fix ETW initialization failure for App Service Windows (#3571)
Fix ingestion sampling(#3578)

Version 3.5.0 GA (02/29/2024)

Breaking changes

⚠️⚠️ Stable HTTP semantic conventions are now emitted ⚠️⚠️ TOO MANY CHANGES TO LIST HERE, be sure to review the full list of changes.

Enhancements:

Update to OpenTelemetry Java 2.1.0 (#3418)
Support stable HTTP semantic conventions (#3418)
GA sampling overrides (#3463)
Collect JMX metrics via OTLP (#3406)
Support OpenTelemetry Java instrumentation Agent Extension (#3493)
Support Pekko instrumentation (#3517)

Bug fixes:

Fix ETW log for non-auto attach (#3560)
Fix duplicate exceptions (#3555)

Version 3.4.19 GA (12/20/2023)

Enhancements:

Update to OpenTelemetry Java 1.32 (#3394)
Update to azure-monitor-opentelemetry-exporter to 1.0.0-beta.15 (#3360)
Support non-string type telemetry processor attributes (#3388)
Double pumping JMX metrics to OTLP and Breeze (#3406)

Version 3.4.18 GA (10/30/2023)

Enhancements:

Update to OpenTelemetry Java 1.31 (#3341)
Update to azure-monitor-opentelemetry-exporter to 1.0.0-beta.13 (#3356)
Collect operation name for Azure Function (#3311)

Bug fixes:

Fix Statsbeat when using dormant Application Insights instrumentation keys (#37176)

Version 3.4.17 GA (09/18/2023)

Enhancements:

Update to OpenTelemetry Java 1.30 (#3292)
GA Azure Active Directory authentication (#3284)
Enable sampling overrides using thread.name (#3285)

Bug fixes:

Fix regression in 3.4.16 where default applicationinsights.json config location is not loaded in AppServices, Azure Functions, and AKS (#3288)

Version 3.4.16 GA

Enhancements:

Add r2dbc preview instrumentation (#3260)
Fix azure functions consumption initialization (#3244)
Add new ktor preview instrumentation (#3243)
Telemetry processor - Allow multimatch on log body and span name (#3229)

Version 3.4.15 GA

Enhancements:

Apply exception.type and exception.message attributes (#3148)
Allow "connectionString" in APPLICATIONINSIGHTS_CONFIGURATION_CONTENT except for app services integrated solution (#3191)
Update to OpenTelemetry Java Instrumentation 1.28.0 (#3199)
Add config to disable logging instrumentation (#3208)

Bug fixes:

Fix log exporter self-diagnostics (#3140)
Fix name of env var to match documentation APPLICATIONINSIGHTS_SAMPLING_REQUESTS_PER_SECOND (#3161)

Version 3.4.14 GA

Enhancements:

Update to OpenTelemetry Java Instrumentation 1.27 (#3124)
Add javascript snippet injection preview feature (#3132)

Bug fixes:

Fix netty ByteBuf leak (#3127)
Fix log4j timestamp (#3137)

Version 3.4.13 GA

Enhancements:

Update to OpenTelemetry Java Instrumentation 1.26 (#3069)
Improve sampling override to support exceptions (#3022)

Bug fixes:

Fix 2.x SDK integration when no 2.x iKey present (#3036)

Version 3.4.12 GA

Enhancements:

Update to OpenTelemetry Java Instrumentation 1.25 (#3005)

Bug fixes:

Fix NPE when pulling profiler configuration (#2987)

Version 3.4.11 GA

Enhancements:

Update to OpenTelemetry Java Instrumentation 1.24 (#2963)

Bug fixes:

Fix custom metrics in Azure Function Consumption Plan (#2946)

Version 3.4.10 GA

Enhancements:

Update to OpenTelemetry Java Instrumentation 1.23 (#2923)
Set resultCode to "0" when Span.httpStatusCode is not present (#2925)
Support dots in JMX attribute names (#2921)
Improve Cosmos telemetry mapping (#2906)

Version 3.4.9 GA

Enhancements:

Allow profiler to be controlled from portal by default (#2683)
GA metricIntervalSeconds config (#2875)

Version 3.4.8 GA

Enhancements:

Update to OpenTelemetry Java Instrumentation 1.22.1 (#2840)
Add support for configuring connection string at runtime (#2809)

Version 3.4.7 GA

Enhancements:

Update to OpenTelemetry Java Instrumentation 1.21 (#2796)

Bug fixes:

Fix custom instrumentation type (#2776)
Fix Azure SDK target mapping (#2787)

Version 3.4.6 GA

Bug fixes:

Fix self-diagnostics trace level logging can hang (#2778)

Version 3.4.5 GA

Enhancements:

Update to OpenTelemetry Java Instrumentation 1.20 (#2712)
Additional self-diagnostics (#2709, #2719, #2717, #2716, #2737, #2756)

Version 3.4.4 GA

Enhancements:

Add scala instrumentation when play or akka instrumentation are enabled (#2677)

Bug fixes:

Fix Azure Function instrumentation (bug introduced in 3.4.2) (#2684)

Version 3.4.3 GA

Bug fixes:

Fix runtime attach configuration file property (#2619)
Fix sampling for Azure Functions (#2652)
Fix default log directory for Azure Functions (#2660)

Version 3.4.2 GA

Enhancements:

Update to OpenTelemetry 1.19.0 (#2596)
Add a new configuration for runtime attach configuration file (#2581)
Add new configurations to export LogBack and Log4j 2 markers (#2529)

Bug fixes:

Fix duplicate Azure Functions logs (#2579)
Fix OFF logging threshold (#2592)

Version 3.4.1 GA

Enhancements:

Rename TelemetryKind to TelemetryType (#2535)
Make classic SDKs work with older 3.2.x Agent versions (#2531)

Bug fixes:

Fix ETW dll (#2534)

Version 3.4.0 GA

Enhancements:

Introduce a new preview feature: Java Profiler for Azure Monitor Application Insights
Update OpenTelemetry to 1.18.0 (2509)
Remove limit on filtering default metrics (2490)
Add a new config to export logback code attributes (2518)

Version 3.4.0-BETA.2

Migration notes:

If you were using Automatic naming before, you will need to update your module-info.java file Change requires applicationinsights.runtime.attach; to requires com.microsoft.applicationinsights.runtime.attach; and everything should work

Enhancements:

Automatic module name entry added to Runtime Attach library Jar to support Modular Java

Version 3.4.0-BETA

Migration notes:

Rate-limited sampling is the new default. If you have not configured a sampling percentage and are using the prior default behavior of 100%, you will get the new default which limits the total requests captured to (approximately) 5 requests per second. If you wish to continue with the previous behavior, you can explicitly specify a sampling percentage of 100, e.g.
```
{
  "sampling": {
    "percentage": 100
  }
}
```
Both percentage-based and rate-limited sampling now only apply to requests, and to telemetry that is captured in the context of a request If you do want to sample "standalone" telemetry (e.g. startup logs), you can use sampling overrides, e.g.
```
{
  "preview": {
    "sampling": {
      "overrides": [
        {
          "telemetryType": "dependency",
          "includingStandaloneTelemetry": true,
          "percentage": 10
        }
      ]
    }
  }
}
```

Enhancements:

Standard metrics for HTTP requests and HTTP dependencies are now pre-aggregated inside of the Java agent, and so they are no longer affected by sampling (#2439)
Rate-limited sampling has been introduced which can be used to tune ingestion costs (#2456), e.g.
```
{
  "sampling": {
    "limitPerSecond": 5
  }
}
```
Note: the limitPerSecond can be a decimal value, including values less than 1
Exceptions are no longer captured directly on dependency records for these reasons:
- in order to reduce ingestion cost
- dependency exceptions which are uncaught, bubble up to the request-level where they are already captured
- dependency exceptions which are caught, tend to be logged if they are important, where they are also already captured (#2423)

New versions of the applicationinsights-core and applicationinsights-web 2.x SDK artifacts have been released, with a reduced API surface area to makes it clear which APIs interop with the 3.x Java agent (#2418) These new versions are no-ops when run without the Java agent. To update your dependencies:

2.x dependency	Action	Remarks
`applicationinsights-core`	Update the version to `3.4.0-BETA` or later
`applicationinsights-web`	Update the version to `3.4.0-BETA` or later, and remove the Application Insights web filter your `web.xml` file.
`applicationinsights-web-auto`	Replace with `3.4.0-BETA` or later of `applicationinsights-web`
`applicationinsights-logging-log4j1_2`	Remove the dependency and remove the Application Insights appender from your log4j configuration.	This is no longer needed since Log4j 1.2 is auto-instrumented in the 3.x Javaagent.
`applicationinsights-logging-log4j2`	Remove the dependency and remove the Application Insights appender from your log4j configuration.	This is no longer needed since Log4j 2 is auto-instrumented in the 3.x Javaagent.
`applicationinsights-logging-log4j1_2`	Remove the dependency and remove the Application Insights appender from your logback configuration.	This is no longer needed since Logback is auto-instrumented in the 3.x Javaagent.
`applicationinsights-spring-boot-starter`	Replace with `3.4.0-BETA` or later of `applicationinsights-web`	The cloud role name will no longer default to `spring.application.name`, see the 3.x configuration docs for configuring the cloud role name.

ConnectionString overrides were introduced, and InstrumentationKey overrides were deprecated (#2471):

{
  "preview": {
    "connectionStringOverrides": [
      {
        "httpPathPrefix": "/myapp1",
        "connectionString": "InstrumentationKey=12345678-0000-0000-0000-0FEEDDADBEEF;IngestionEndpoint=...;..."
      },
      {
        "httpPathPrefix": "/myapp2",
        "connectionString": "InstrumentationKey=87654321-0000-0000-0000-0FEEDDADBEEF;IngestionEndpoint=...;..."
      }
    ]
  }
}

Configuration to disable jdbc masking was introduced (#2453):

{
  "instrumentation": {
    "jdbc": {
      "masking": {
        "enabled": false
      }
    }
  }
}

Sampling overrides can (and should) now be targeted to requests, dependencies, traces (logs) or exceptions (#2456), e.g.

{
  "preview": {
    "sampling": {
      "overrides": [
        {
          "telemetryKind": "dependency",
          ...
          "percentage": 0
        }
      ]
    }
  }
}

Ingestion response codes 502 and 504 now trigger storing telemetry to disk and retrying (#2438)
Metric namespaces are now supported via the new 3.x applicationinsights-core artifact (#2447)
OpenTelemetry baseline has been updated to Java 1.17.0 (#2453)
Ingestion sampling warnings are now suppressed since those are expected (#2473)

Bug Fixes:

Fix operation_Id and operation_parentID being captured as 00000000000000000000000000000000 for "standalone" log records (which occur outside of a request). These fields are now empty for "standalone" log records, to reflect that they are not part of an "operation" (i.e. request) (#2432)

Version 3.3.1 GA

Suppress nested client dependencies (regression in 3.3.0) (#2357)
Add support for custom instrumentation (#2380)
Additional support for Spring JMS instrumentation (#2385)
Capture MDC attributes for jboss-logging (#2386)
Fix missing message data (#2399)
Fix Azure Function consumption lazy loading introduced in v3.3.0 (#2397)
Support Java 18 (#2391)
Update to OpenTelemetry 1.16.0 (#2408)
Fix CPU metrics (#2413)

Version 3.3.0 GA

Update OpenTelemetry to 1.15 (#2332)
Add configuration for disk persistence capacity (#2329)
Add support for runtime attach (#2325)
Continue to add support for OpenTelemetry metrics API

Version 3.3.0-BETA.2

Update OpenTelemetry to 1.14
Reduce jar file size (#2295)
Stop capturing exception records on dependencies (#2307)
Add support for sampling overrides on http request headers (#2308)
Enable quartz instrumentation by default (#2313)
Add warning message on internal attribute usage (#2314)
Lots of refactorings and improvements
Continue to add support for OpenTelemetry metrics API

Version 3.3.0-BETA

Update OpenTelemetry to 1.13 (#2257)
Deprecate logs' LoggingLevel custom property (#2254)
Add support for OpenTelemetry metrics API
Lots of refactorings and improvements

Version 3.2.11 GA

Turn off Statsbeat when unable to reach ingestion service (#2221)

Version 3.2.10 GA

Fix Statsbeat warning (#2208)

Version 3.2.9 GA

Increase export throughput (#2204)
Fix parsing exception with colons (#2196)
Remove reverse name lookup everywhere (#2205)

Version 3.2.8 GA

Fix spring actuator endpoint behavior (#2146)
Better JMX debug logging (#2157)
Add BatchSpanProcessor configuration option (#2165)

Version 3.2.7 GA

Improve startup performance by optimizing weak cache (#2136)
Fix reverse DNS name lookup (#5393)
Oshi optimization for better performance (#2126)
Fix a NullPointerException in startup profiler (#2124)
Drop metrics with NaN values (#2119)

Version 3.2.6 GA

Support Statsbeat in EU regions (#2082)
Update Oshi default logging level (#2086)
Add debug profiler for startup perf (#2085)
Avoid local DNS resolution when using http proxy configuration (#2095)

Version 3.2.5 GA

Log warning on 206 (partial success) response from Breeze (#2065)
Fix ingestion error on missing exception message (#2064)
Add separate queue for metrics to avoid dropping telemetry (#2062)
Make vertx preview instrumentation opt-in (#2058)
Add Friendly exception handling for cipher suite issue (#2053)
Fix URI parse error (#2067)

Version 3.2.5-BETA

Add vertx instrumentation (#1990)
Clean up Oshi logging (#2047)
Support proxy username and password (#2044)
Add configuration for export queue capacity (#2039)
Add configuration for capturing HTTP server 4xx as error (#2037)
Add configuration for capturing HTTP headers (#2036)
Update OpenTelemetry to the latest (#2030)
Fix device instrumentation (#2027)
Add telemetry processors masking feature (#1977)

Version 3.2.4 GA

Add play framework preview instrumentation (#1958)
Add span kind to sampling overrides (#1960)
Fix status exception in a readonly file system (#1967)
Reduce noisy truncation logging (#1968)
Fix jackson initialization (#1984)
Add url, name and fix operation name to request document in live metrics sample telemetry (#1993)
Fix duration in live metrics sample telemetry feature (#1996)

Version 3.2.3 GA

Fix instrumentation key is null when sending persisted files from disk (#1948)
Fix consumer span exporter mapping (#1952)
Handle weird folder name like 'test%20-test' (#1946)
Support read-only file system (#1945)
Reduce netty pool size (#1944)
Do not apply sampling to metrics (#1902)
Support for multiple instrumentation key (#1938)

Version 3.2.2 GA

Bridge session id from 2.x SDK (#1930)
Fix NullPointerException when sending raw bytes from persisted files on disk (#1931)
Add non-essential Statsbeat (#1925)
Update OpenTelemetry to 1.7 (#1920)

Version 3.2.1 GA

Add Akka preview instrumentation (#1911)
Add internal-reflection instrumentation (#1912)
Reduce spammy logging (#1915)

Version 3.2.0 GA

Add Quartz and Apache Camel instrumentations to preview (#1899)

Version 3.2.0-BETA.4

Database dependency names are now more concise, e.g. SELECT mydatabase.mytable instead of SELECT x, y, z, ... from ... where ........... (the full sanitized query is still captured in the dependency data field)
Database dependency target field slightly updated to enable better U/X integration
HTTP dependency names are now more descriptive, e.g. GET /the/path instead of HTTP GET
Update default configuration:
- 'azuresdk' configuration moved out of preview configuration and is now enabled by default
- 'openTelemetryApiSupport' moved out of preview configuration and is now enabled by default
- 'httpMethodInOperationName' moved out of preview configuration and is now enabled by default
Fix quick pulse memory leak

Version 3.2.0-BETA.3

Log all available jmx metrics at debug level
Misc logging improvements (#1828)
Add grizzly instrumentation as preview
Fix live metrics sampled counts
Fix stack traces not being captured for deadlocks (#1263)
Support Sample Telemetry feature for live metrics (#1852)
Add inherited attributes preview (#1743)
Fix Application Map to App service/function view support (#1868)
Fix service bus mapping (#1848)

Version 3.2.0-BETA.2

Lots of internal clean up
Reduce binary size from 3.2.0-BETA
Add Spring Integration instrumentation (preview)
Add thread name to log capture (#1699)
Support W3C baggage propagation
Disable legacy Request-Id propagation by default
Handle partial content success due to Stamp specific redirects (#1674)
Log controlled warning when telemetry truncated (#1021)
Support system properties for connection string, role name and role instance (#1684)
Small fixes to 2.x interop
Updated to support OpenTelemetry API 1.4.1 (preview)
Moves 3 instrumentations out of preview, and enables them by default
- Java 11 HTTP client
- JAX-WS
- RabbitMQ
Pulls in new instrumentations (enabled by default)
- AsyncHttpClient
- Google HTTP client
- JAX-RS client
- Jetty client
- Spring RabbitMQ
- Servlet 5.0 (#1800)

Version 3.2.0-BETA

Support Azure Active Directory Authentication
Support Stamp Specific redirects
Use v2.1/track endpoint to send telemetry instead of v2/track

Version 3.1.1

Fix 2.x interop of timestamps (#1726)
Add metric filtering to telemetry processor (#1728)
Add log processor to telemetry processor (#1713)
Fix app id retrieval 404 for Linux Consumption Plan (#1730)
Fix invalid instrumentation keys for Linux Consumption Plan (#1737)

Version 3.1.1-BETA.4

Reduce agent jar file size back to normal (#1716)

Version 3.1.1-BETA.3

Fix memory leak caused by not removing Netty listeners upstream #2705
Improve Azure Service Bus support (#1710)
Updated to support OpenTelemetry API 1.2.0

Version 3.1.1-BETA.2

Support explicit operation id and parent id from 2.x SDK (#1708)
Fix exceptions with deep stack trace exceeding 64 KB rejected by Application Insights backend (#1702)
Use shorter telemetry names for all telemetry types to reduce payload (#1700)
Improve Azure SDK support (#1698)

Version 3.1.1-BETA

Fix NullPointerExceptions for App Services #1681
Add Application Insights stats

Version 3.1.0

Capture http method in the operation name (#1679)

Version 3.0.4-BETA.2

Enable users to override iKey, cloud role name and cloud role instance per telemetry (#1630)
Fix duplicate headers (#1640)
Add preview instrumentations for javaHttpClient, rabbitmq, and jaxws (#1650)
Add a new env var called APPLICATIONINSIGHTS_RP_CONFIGURATION_FILE
Add cloud role name and instance to applicationinsights-rp.json configuration
Improve agent start up time

Version 3.0.4-BETA

Enable Azure Functions to update the instrumentation logging level at runtime
Enable Azure Functions to update the self-diagnostics logging level at runtime
Fix grails failure (#1653)
Remove class loader optimization opt out system property for Azure Functions (#1627)

Version 3.0.3 GA

Suppress redis.encode.start/end custom events (#1586)
Add Azure SDK instrumentation preview (#1585)
Fix WebFlux HTTP client hanging on nested calls (#1563)
Fix instrumentation of reactor netty HttpClient.from() (#1578)

Version 3.0.3-BETA.3

Change default preview config setting (#1580)
Fix sampling rate recorded for dependencies (#1582)

Version 3.0.3-BETA.2

Added env var APPLICATIONINSIGHTS_PREVIEW_OTEL_API_SUPPORT to enable preview OpenTelemetry API support (#1548)
Added env var APPLICATIONINSIGHTS_SELF_DIAGNOSTICS_FILE_PATH (and use that to log json config parsing errors) (#1550)
RP integration improvements (#1551), (#1558), (#1559)
Add env var APPLICATIONINSIGHTS_PREVIEW_LIVE_METRICS_ENABLED to disable live metrics (#1552)
Remove unwanted custom dimension that showed up in 3.0.3-BETA (#1565)
Add sampling overrides that can be used to implement telemetry filtering (#1564)
Switch native performance counter collection to use OSHI (#1482)

Version 3.0.3-BETA

Extra attributes in applicationinsights.json (e.g. typos) are logged as warnings at startup (#1459)
Better 2.x SDK interop (#1454)
Fix for ClassNotFoundException when deploying some JBoss ear files (#1465)
Fix configuration for disabling spring boot actuator metrics (#1478)
Add env vars for disabling instrumentation (#1495)
Removed the undocumented micrometer reportingIntervalSeconds, and instead, added preview configuration metricIntervalSeconds that controls all metrics: (#1507)
Changed undocumented reload of connection string and sampling percentage to be preview and opt-in (#1507)
Additional reactor-netty and kotlin coroutine instrumentation (#1511)
Improved error messages for network connectivity issues (#1483)
Support for roles in Live metrics (#1510)
Fixed role name on Azure Functions (#1526)
Populate client IP (#1538)
Support for role name in Azure Functions consumption plan (#1537)

Version 3.0.2 GA

Fix App Services logback parser exceptions
Log instead of throwing exception on unbridged API (#1442)
Fix role name config (#1450)
Support more interop with 2.x SDK ThreadContext (getId and getParentId)

Version 3.0.1 GA

Suppress duplicate AI agents. Resolves (#1345)
Fix role name precedence. Resolves (#1425)
Fix APPLICATIONINSIGHTS_CONNECTION_STRING env var. Resolves (#1428)
Add APPLICATIONINSIGHTS_SELF_DIAGNOSTICS_LEVEL env var. Resolves (#1422)
New 'extract' attribute feature added to Telemetry processors

Version 3.0.1-BETA.2

Fix code to use the correct logging configuration 'level' (#1415)
Capture log4j2 async logging. Addresses issue (#1389)
Add configuration for disabling dependencies (#1294)

Version 3.0.1-BETA

Friendly error messages thrown for the following scenarios
- Missing connection string
- Invalid SSL certificate issues when not able to connect to IngestionEndPoint Url, Live endpoint Url and CdsProfiler endpoint url
- Invalid Telemetry Processor Configuration
Telemetry processor config throws null pointer exception when attribute value is not provided and matchType is regexp
Map service.version to application_Version (#1392)
This release also brings more interoperability with the 2.x SDK:
- ThreadContext.getRequestTelemetryContext().getHttpRequestTelemetry().getProperties().put("key1", "val1")
- ThreadContext.getRequestTelemetryContext().getHttpRequestTelemetry().setName("new name")
- ThreadContext.getRequestTelemetryContext().getHttpRequestTelemetry().getContext().getUser().setId("uname")
Add thread details span processor
Add agent version number to startup message

Version 3.0.0 GA

Config changes
- Change json config file name from ApplicationInsights.json to applicationinsights.json
- Redesign json config structure (Java Standalone Config)
Send JMX metrics to CustomMetrics instead of PerformanceCounter (Default Mettrics Captured by Java 3.0 Agent)
Telemetry processor for requests, dependencies, and traces
Attach custom dimensions to all telemetries
Fix QuickPulse bug (Live Metrics are showing incorrect results)
Fix URL with spaces (#1290)
Improve overall logging

Version 3.0.0 Preview.7

Dropped Java 7 support
Supported boolean JMX metrics (#1235)
Added support for JMX metrics environment variable APPLICATIONINSIGHTS_JMX_METRICS
Added two default JMX metrics for thread count and class count
Changed default logging capture from WARN to INFO
Added support for logging capture environment variable APPLICATIONINSIGHTS_LOGGING_THRESHOLD
Added support for sampling percentage environment variable APPLICATIONINSIGHTS_SAMPLING_PERCENTAGE
Added auto-collection for 2.x SDK trackTrace, trackRequest and trackException
Added capturing MDC logging properties
Added support for Jetty Native Handler
Fixed JMX metrics which aren't available initially are never recorded (#1233)
Fixed capturing JMX metrics inside of CompositeData (#952)
Fixed HTTP request header to use X-Forwarded-For as Client IP when present (#404)
Fixed URLs with spaces (#1290)

Version 2.6.2

Fixed NullPointer when testing with MockMvc (#1281)

Version 3.0.0 Preview.6

Fixed client_Browser data populated incorrectly
Fixed non-daemon thread pool so that it won't prevent app from shutting down

Version 2.6.2-BETA.2

Fixed retry transmission on client side exception (#1282)
Fixed RequestTelemetryContext initialization (#1247). Thanks, librucha!
Built in instrumentation for Jetty Native handlers

Version 2.6.2-BETA

Added additional error logging for troubleshooting issues loading JNI performance counter library (#1254)
Fix backoff condition so that retries will continue indefinitely (#1253)

Version 3.0.0 Preview.5

Fix memory leak
Fix shutdown issue due to non-daemon thread
Fix backoff condition so that retries will continue indefinitely

Version 2.6.1

Fix shutdown issue due to non-daemon thread (#1245)

Version 2.6.1-BETA

Fix W3C BackCompat across multiple Application Insights instrumentation keys (#1228)
Fix spring boot starter when used with spring.main.lazy-initialization=true (#1227)

Version 2.6.0

No changes since 2.6.0-BETA.3

Version 2.6.0-BETA.3

Use newer id format when reporting request and dependency telemetry (#1149)
Fixed pom file dependency in applicationinsights-spring-boot-starter (#1149)

Version 2.6.0-BETA.2

Removed Local Forwarder Channel. Local Forwarder is now a deprecated solution The classes and configuration elements which supported this solution have been removed
Removed unused dependencies from azure-application-ingishts-spring-boot-starter (xmlpull, xstream)
Fixed Unknown constant pool issue with modeule-info.class when using older versions of ClassGraph
Fixed potential issue with URI building in ConnectionString parsing
Updated to the latest version of the struts API library (used by com.microsoft.applicationinsights.web.struts.RequestNameInterceptor)
Fixed memory leak with ChannelFetcher when TelemetryClient is instantiated in large numbers
Various stability improvements (#1177)

Version 2.6.0-BETA

W3C tracing with back-compat is now enabled by default (#1141)
Improved MongoDB instrumentation (#1132)
Agent now supports Java 13 (#1149)
Older Jersey versions failing when scanning classes due to inclusion of a few Java 8 class files (#1142)
Fix remote dependency target field format (#1138)

Version 2.5.1

No changes since 2.5.1-BETA.2

Version 2.5.1-BETA.2

Fixed regression from 2.5.1-BETA (#1089)
Fixed async thread tracking (#1100)

Version 2.5.1-BETA

Fixed exception thrown by agent when using Apache HttpClient ResponseHandler methods (#1067)
Connection String introduced for better government cloud support
Agent now captures MongoDB queries

Version 2.5.0

No changes since 2.5.0-BETA.5

Version 2.5.0-BETA.5

Fixed ClassCastException that could happen when using HttpURLConnection (#1053)

Version 2.5.0-BETA.4

Fixed registration of custom JMX performance counters (#1042)
Fixed IllegalStateException that could happen when using HttpURLConnection (#1037)
Fixed NullPointerException that could happen when using Java 11 (#1032)

Version 2.5.0-BETA.3

Fixed HttpURLConnection instrumentation was not capturing outgoing url (#1025)
Added agent logging capture threshold, configurable via <Logging threshold="warn" /> in the AI-Agent.xml, with default threshold warn (#1026)
Fixed request telemetry displaying 200 response code for some failed requests (#810)
Fixed GC performance counters not working (#929)

Version 2.5.0-BETA.2

Added back support for <Class> custom instrumentation in AI-Agent.xml
Fixed opting out of agent capturing logging via <Logging enabled="false" />
Misc fixes (#969), (#978)

Version 2.5.0-BETA

Added support for Java 9-12
Added new applicationinsights-web-auto.jar artifact that automatically registers the web filter by just being present in your dependencies (works for both servlet containers and spring boot standalone)
- No need to modify web.xml, or add @WebFilter
Agent now captures application logging via Log4j 1.2, Log4j2 and Logback
- No need to add applicationinsights-logging-*.jar dependency and modify the application's logging configuration (e.g. log4j.properties, log4j2.xml, logback.xml)
- To opt out of this (e.g. if you prefer to capture logging via the Application Insights appenders), add <Logging enabled="false" /> to the AI-Agent.xml file inside of the Builtin tag
Agent now automatically captures dependencies for async requests by tracking the request across multiple threads
Agent now captures JDBC queries for all JDBC drivers
Added additional HTTP client support
- java.net.HttpURLConnection
- Apache HttpClient 3.x (4.x was already previously supported)
- OkHttp3
- OkHttp2 (previously did not propagate distributed trace context)
Agent now sets Operation Name (used for aggregating similar requests) automatically based on Spring @RequestMapping and JAX-RS @Path
- No need for registering RequestNameHandlerInterceptorAdapter or writing own interceptor
- (also supports Struts, based on action class / method name)
Agent now supports multiple applications deployed in the same application server
- (support was removed temporarily in the 2.4.0 release)
Simplified JBoss and Wildfly deployment when using the agent
- No need for setting jboss.modules.system.pkgs, java.util.logging.manager and -Xbootclasspath
Added <RoleName> tag in ApplicationInsights.xml to simplify role name configuration
- No need to write a custom ContextInitializer
Removed support for <Class> custom instrumentation in AI-Agent.xml
Removed support for <RuntimeException> custom instrumentation in AI-Agent.xml

Version 2.4.1

Fixed correlation id serialization (#910)
Upgraded spring boot dependencies in spring-boot-starter from 1.5.9 to 1.5.21

Version 2.4.0

Updated Spring Boot Starter version number to track with the SDK version
Upgrade gradle to 5.3.1
Ensure string compare is case insensitive when running a SQL explain on a select statement (#907)
Fixed ThreadLocal leak (#887)
Fixed QuickPulse schema version (#904)
Added retries to CDSProfileFetcher (#901)
Fixed issue when adding duplicate Windows performance counter (#919)
Added caching of sdk version id, reducing number of file IO operations (#896)
Fixed bug with live metrics (QuickPulse) where request/dependency durations were being truncated to the millisecond
Misc stability improvements (#932), (#941), (#945), (#946), (#947), (#948)

Version 2.4.0-BETA

Removed support for multiple apps instrumented with single JVM Agent. Instrumentation will only work for single apps in application server
Introduce support for PostgreSQL jdbc4 prepared statements (#749)
Introduced support for Manual Async and Explicit Multithreading correlation
~~Introduced setRequestTelemetryContext API in WebTelemetryModule Interface.~~
Introduced experimental API's AIHttpServletListner, HttpServerHandler, ApplicationInsightsServletExtractor and HttpExtractor
Deprecated ApplicationInsightsHttpResponseWrapper
Remove duplicate provider (#826)
Fix incorrect sdk version being sent in Quick Pulse payload
Fix dependency metrics does not show up on Livemetrics UX (#882)

Version 2.3.1

Removed dependency on Guava vulnerable to CVE-2018-10237 (#799)

Version 2.3.0

Introducing Application Insights SpringBoot Starter 1.1.1 (GA VERSION)
Shade guava dependency (#784)
Introduced W3C Distributed tracing protocol (#716)

Version 2.2.1

Updated gRPC dependencies which inlcudes latest netty version (#767)
Added support for absolute paths for log file output (#751)
Abstracted Internal Logger in Core into separate reusable module
Deprecated InternalAgentLogger in favor of InternalLogger for better consistency
Agent now supports diagnostic writing logs to file (#752)
Added ability to configure FileLogger for SpringBootStarter
Fixed the WebRequestTrackingFilter order in FilterChain for SpringBoot Starter

Version 2.2.0

Introduces SpringBoot Starter 1.1.0-BETA
Starter now respects autoconfiguration for Micrometer metrics
Starter adds autoconfiguration for Local Forwarder Telemetry Channel. (Please look at readme for details on configuration.)
Fix the thread shutdown issue in SpringBoot Starter by registering ApplicationInsightsServletContextListener (#712)
SpringBoot Starter now supports reading iKey using all the variable names as core sdk
Starter would no longer support relaxed binding of ikey property due to complex conditional need and backport problems with RelaxedBinder from Boot 2 to 1.5.x
InterceptorRegistry class no longer has @EnableWebMvc annotation as it breaks springboot autoconfig
Deprecated getRoleName/setRoleName and getRoleInstance/setRoleInstance in DeviceContext. Introduced CloudContext to hold replacements, getRole/setRole and getRoleInstance/setRoleInstance, respectively
Introduced CloudInfoContextInitializer to set roleInstance in CloudContext. This new initializer is included by default and therefore will not affect the current tags
Adds WebAppNameContextInitializer for use with the WebRequestTrackingFilter
Adds LocalForwarderChannel for use with the LocalForwarder
Removes Servlet 3.0 annotations from WebRequestTrackingFilter and ApplicationInsightsServletContextListener which were causing issues in certain cases. This will allow easier customization of the filter. To use the listener moving forward, it will need to be defined in web.xml
Fix QuickPulse post interval bug from 5 seconds to 1 second

Version 2.1.2

Fix the HTTP dependency collection when using NetFlix Zuul Library (#676)
Remove the method httpMethodFinishedWithPath from the interface ImplementationCoordinator.java as the associated instrumentation explicitly depended on HttpUriRequest class of ApacheHttpClient which is not always true
Updated thread pool to properly shutdown all threads (#662)
We now properly shadow the com.google.thirdparty package (#661)
Added required attributes to @WebFilter annotation (#686)

Version 2.1.1

Introducing support for SpringBoot via Application-Insights-SpringBoot-Starter (currently in beta) (#646)
In order to add support for SpringBoot starter some fields in core SDK are made public
Introduced public constructor in InProcessTelemetryChannel.java class
Introduced a public method getActiveWithoutInitializingConfig() in TelemetryConfiguration.java class

Version 2.1.0

Introduced Heartbeat feature which sends periodic heartbeats with basic information about application and runtime to Application Insights
Enable support for system properties in the instrumentation key resolving component
Performance improvements during initialization
If a performance counter cannot be computed, report no value instead of -1 (#647)

Version 2.0.2

Fix incorrect success flag set when capturing HTTP Dependency
Removed HttpFactory class as it was not being used (#577)
Fixed issue with sessionId not being set in request telemetry due to date parsing issues
Added a way to have real time SDK Logs when logging on File (#616)
Fixes the inaccurate timestamp recorded with JMX Metrics (#609)
Added a way to configure MaxInstantRetries from XML
Added the ability to have cold SDK initialization (no logs except critical logAlways messages)
Fix issue when dependency start time was not being recorded correctly
HTTP Dependency Telemetry now matches with .NET SDK (#533)
Introduced public method httpMethodFinishedWithPath(String identifier, String method, String path, String correlationId, String uri, String target, int result, long delta) to support instrumentation of Path of URI in HTTP requests
httpMethodFinished(String identifier, String method, String correlationId, String uri, String target, int result, int delta) is now marked as deprecated
Logger Messages now being pushed as custom dimension when reporting exceptions via Loggers. (#400)
Enhanced Log4j2 appender to support basic parameters including Filters, Layouts and includeException. (#348)
Fixed PageView telemetry data not being reported
Fixed NPE in MapUtil.copy() (#526)
Fixed Memory leak in SDKShutdownActivity. This fix upgrades our Servlet version from 2.5 to 3.0. The SDK must now be run on an application server supporting Servlet 3.0 (#513)
Fixed SDK initialization happens twice to improve startup performance (#504)

Version 2.0.1

Fix Inconsistency in artifact names in POM files

Version 2.0.0

Upgraded logback dependency version to 1.2.3
Improved FixedRateSampling so that it also supports Sampling Percentage set by users programmatically. Fixes issue #535
Fault Tolerance improvements: introducing retries and exponential backoff capabilities with disk persistence
Issue #499: Fix handling of NaN and +/-Infinity in JSON serializer
Issue #506: Null Reference Check causing Null Pointer Exception in TelemetryCorrelationUtils.java

Version 2.0.0-BETA

Updating various dependencies to latest version
Introducing public class CustomClassWriter in Agent to enable finding common super classes used for Agent instrumentation without loading it
Introducing Parametrized constructor in WebRequestTrackingFilter to ensure name binding
Fixed Issue #428 (Agent cannot capture oracle dependencies)
Fixed Issue #418 (Java.lang.verify error caused while capturing sql dependencies in JDK 1.8)
Fixed Issue #286, #277 (Issues in capturing preparedStatement calls)
Fixed Issue #365 (Relocate all web jars)
Fixed Issue #276 (Instrumentation issues with HTTP Client)
Introducing public method 'getIncludedTypes' and 'getExcludedTypes' in TelemetryProcessorXmlElement
Introducing class 'com.microsoft.applicationinsights.internal.config.ParamIncludedTypeXmlElement'
Introducing class 'com.microsoft.applicationinsights.internal.config.ParamExcludedTypeXmlElement'
Introducing class 'com.microsoft.applicationinsights.internal.channel.samplingV2.SamplingScoreGeneratorV2'
Introducing Telemetry Processor 'com.microsoft.applicationinsights.internal.channel.samplingV2.FixedRateSamplingTelemetryProcessor'
Introducing FixedRate Sampling v2 Using Telemetry Processors
Fixed issue #436 (TraceTelemetry with Severity is not shown in UI). This fixes a regression issue with TelemetryClient.trackTrace and TelemetryClient.trackException
Introducing support for cross-component correlation. Addresses issue (#457)
Changed signature of com.microsoft.applicationinsights.internal.agent.CoreAgentNotificationHandler.httpMethodFinished. It now includes correlation information
Compilation now targets Java 1.7. Java 1.6 is no longer supported
Adding system property applicationinsights.configurationDirectory to allow to explicitly set directory containing the config file

Version 1.0.10

track() method of 'com.microsoft.applicationinsights.TelemetryClient' is now modified. No longer performing pre-sanitization
All Sanitization will now occur in com.microsoft.applicationinsights.telemetry.JsonTelemetryDataSerializer class
Method sanitize of interface com.microsoft.applicationinsights.telemetry.Telemetry is now obsolete
The auto generated schema classes now have writer method with limits according to endpoint
Fixed issue #403 (Exceeding property length invalidates custom event)
Fixed issue #401 (Custom key and property sanitized)
Fixed Request Telemetry Sending bug with new schema
Fixed reliability issue with Jedis client dependency collector
Fixed Request Telemetry Sending bug with new schema
Schema updated to the latest version. Changes in internal namespace core/src/main/java/com/microsoft/applicationinsights/internal/schemav2
Class SendableData in internal namespace deleted
Class com.microsoft.applicationinsights.telemetry.BaseSampleSourceTelemetry takes generic class qualifier Domain instead of SendableData
Class com.microsoft.applicationinsights.telemetry.BaseTelemetry takes generic class qualifier Domain instead of SendableData
Methods getExceptionHandledAt and setExceptionHandledAt of ExceptionTelemetry marked obsolete and do not do anything
Obsolete methods of RemoteDependencyTelemetry: getCount, setCount, getMin, setMin, getMax, setMax, getStdDev, setStdDev, getDependencyKind, setDependencyKind, getAsync, setAsync, getDependencySource, setDependencySource
Obsolete methods of RequestTelemetry: getHttpMethod, setHttpMethod
Add option to configure instrumentation key via APPINSIGHTS_INSTRUMENTATIONKEY environment variable for consistency with other SDKs
Fix the issue where track(...) of TelemetryClient class was overwriting the provided telemetry timestamp
Changed the policy on failed sent requests to delay retrying for 5 minutes instead of immediately retrying

Version 1.0.9

Fix the issue of infinite retry and connection drain on certificate error by updating the version of http client packaged with the SDK

Version 1.0.8

#367 Updated the agent project not to be transitive when resolved for core
#374 Updated the core JAR to remove the transitive dependencies for guava, removed the transitive dependency from core and agent, & updated to the latest version of the httpclient
#376 Delaying retry on send when no connection is found
#377 Bug fixes for Live Metrics Stream integration
#378 Added Live Metrics Stream URL filter and fixed duration
#379 Updated Gradle to 3.5
#380 Delaying retry on send when ConnectionException is thrown
#381 Delaying retry on send when HostUnknownException is thrown

Version 1.0.7

Use Shadow plugin to create self contained JAR files in the SDK
Allow marking a metric as custome performance counter. See here
Better support for Visual Studio Code for edting the Application Insights Java SDK Code
Added sampling support. See here
Allow changing the performance counter collection frequency and added hooks before and after sending the PC see here and here
Agent built-in types are now off by default. Support wildcard to monitor multiple classes in the agent
Add dependency type in the agent configuration see here

Version 1.0.6

Allow reporting runtime exceptions
Collect JVM heap memory usage and automatic deadlock detection
Make frequency of performance counter collection configurable
Plugin to allow intervening before and after performance counters collection change docs
Comply to server side throttling
Upgrade to Gradle 3.0 build
Allow running Java agent outside of webapp context
Built in instrumentation for MuleESB client
Built in instrumentation for current Apache Derby DB

Version 1.0.5

Added proxy support
Treat HTTP response codes below 400 (and 401) as success
Fix agent load problem on Linux
Improve cleanup and exception handling in WebRequestTrackingFilter
Propagate log context properties in custom properties
Ability to filter out certain telemetry from being sent
Some other miscellaneous fixes and improvements

Version 1.0.4

Interim version replaced by 1.0.5 on August 2016

Version 1.0.3

Align to a new BOND schema used by the Application Insights data collection endpoints

Version 1.0.2

Prevent from overriding the instrumentation key using the one specified in the config when it's provided explicitly in code
Handle all successfull HTTP status codes and report the relevant HTTP Requests as successful
Handle all exceptions thrown by the ConfigurationFileLocator

Version 1.0.1

The Java agent collects dependency information about the following:
- HTTP calls made via HttpClient, OkHttp and RestTemplate (Spring)
- Calls to Redis made via the Jedis client. When a configurable threshold is passed, the SDK will also fetch the call arguments
- JDBC calls made with Oracle DB and Apache Derby DB clients
- Support the 'executeBatch' query type for prepared statements – The SDK will show the statement with the number of batches
- Provide the query plan for JDBC clients that has support for that (MySql, PostgreSql) – The query plan is fetched only when a configurable threshold is crossed

Version 1.0.0

Adding support for the Application Insights writer plugin for CollectD
Adding support for the Application Insights Java agent
Fix for a compatibility issue with supporting HttpClient versions 4.2 and later

Version 0.9.6

Make the Java SDK compatible with servlet v2.5 and HttpClient pre-v4.3
Adding support for Java EE interceptors
Removing redundant dependencies from the Logback appender

Version 0.9.5

Fix for an issue where custom events are not correlated with Users/Sessions due to cookie parsing errors
Improved logic for resolving the location of the ApplicationInsights.xml configuration file
Anonymous User and Session cookies will not be generated on the server side. To implement user and session tracking for web apps, instrumentation with the JavaScript SDK is now required – cookies from the JavaScript SDK are still respected. Note that this change may cause a significant restatement of user and session counts as only user-originated sessions are being counted now

Version 0.9.4

Support collecting performance counters from 32-bit Windows machines
Support manual tracking of dependencies using a new trackDependency method API
Ability to tag a telemetry item as synthetic, by adding a SyntheticSource property to the reported item

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CHANGELOG

Version 3.6.2 GA (10/23/2024)

Enhancements

Version 3.6.1 GA (10/09/2024)

Bug fixes

Version 3.6.0 GA (10/03/2024)

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Version 3.5.4 GA (07/29/2024)

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Version 3.5.3 GA (05/24/2024)

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Version 3.5.2 GA (04/19/2024)

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Version 3.5.1 GA (03/11/2024)

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Version 3.4.19 GA (12/20/2023)

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Version 3.4.0-BETA.2