Go Agent version 2.x | APM Go Agent Reference [master]

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Go Agent version 2.xedit

module/apmgorm: Switch from github.com/denisenkom/go-mssqldb package to github.com/microsoft/go-mssqldb. #1569
module/apmrestful: Upgrade github.com/emicklei/go-restful package to gituhub.co/emicklei/go-restful/v3. #1580

module/apmotel: Bumped minimum OpenTelemetry version #1501
module/apmotel: Return usable spans when retrieving them from otel.SpanFromContext #1478
Fixed concurrent map write condition where some child spans couldn’t acquire the transaction lock #1487

module/apmotel: handle resources #1424
Drop x/net dependency #1434
module/apmotel: bump go.opentelemetry.io/otel/metric #1435
module/apmotel: follow APM OTel spec and prefer delta temporality #1437
module/apmotel: set the proper trace ID and span ID in trace context #1438
module/apmotel: handle context flags when creating remote transactions and spans #1441

Ensure minimum retry interval of 5 seconds for fetching central configuration #1337
Update span compression logic to handle service.target.* fields #1339
module/apmchiv5: Add panic propogation option #1359
module/apmgormv2: Add sqlserver support #1356
module/apmsql: Add sqlserver support #1356
Update compressed spans to use service.target.* fields to derive its name #1336
module/apmpgxv5: new instrumentation module for jackc/pgx v5 with enhanced support e.g. detailed BATCH and CONNECT traces #1364
Add support for Unwrap []error #1400

Global labels are now parsed when the tracer is constructed, instead of parsing only once on package initialization #1290
Rename span_frames_min_duration to span_stack_trace_min_duration #1285
Ignore \*principal\* headers by default #1332
Add apmpgx module for postgres tracing with jackc/pgx driver enhanced support e.g. Copy and Batch statements #1301
Disable same-kind and enable exact-match compression by default #1256
module/apmechov4: add WithRequestName option #1268
Added support for adding span links when starting transactions and spans #1269
module/apmawssdkgo: fixed a panic related to drop spans #1273
Added support for the trace_continuation_strategy #1270
transaction.type and span.type are now set to "custom" if an empty string is specified #1272
We now capture the database instance name in service.target.*, for improved backend granularity #1279
Improved Kubernetes pod UID and container ID discovery coverage #1288
Fixed span.name for AWS SNS spans to match the spec #1286
module/apmgin: add WithPanicPropagation option #1314
Exit spans may now have non-exit child spans if they have the same type and subtype #1320
Updated instrumentation modules to mark spans as exit spans where possible #1317

Replace authorization with *auth* pattern for sanitizing field names #1230
Fetch initial server version async to prevent blocking NewTracer for 10 seconds #1239
Fix race in apm.DefaultTracer which could lead to multiple tracers being created #1248

Record transaction.name on errors #1177
Fix panic in apmgocql #1180
Stop recording unused transaction.duration.* and transaction.breakdown.count metrics #1167
Make tracestate parsing more lenient, according to W3c spec, allowing duplicate vendor keys #1183
Introduced transport.NewHTTPTransportOptions #1168
Change ELASTIC_APM_SPAN_FRAMES_MIN_DURATION special cases to match agent spec #1188
Remove stacktrace.ContextSetter #1187
Drop support for versions of Go prior to 1.15.0 #1190
Replace apm.DefaultTracer with an initialization function #1189
Remove transport.Default, construct a new Transport in each new tracer #1195
Add service name and version to User-Agent header #1196
Remove WarningLogger, add Warningf methe to Logger #1205
Replace Sampler with ExtendedSampler #1206
Drop unsampled txs when connected to an APM Server >= 8.0 #1208
Removed SetTag #1218
Unexport Tracer’s fields — TracerOptions must be used instead #1219