v4.0.0

✨ Features

• Added support for root exit spans (#1297) (f1e1f30)

💥 BREAKING CHANGES

• Dropped support for node v14 and v16 (#1348) (aaa9ad4)

  • The Node.js versions v14 and v16 have officially reached their end of life.
  • More info see: node-end-of-life-releases.

• Dropped support for lambda runtimes v14 and v16 (#1352) (4d28d6b)

  • AWS has officially dropped support for AWS Lambda runtimes v14 and v16.
  • Refer to the Lambda deprecation policy lambda-runtime-support-policy.

• kafka: enforced 'string' format for Kafka trace headers and dropped binary support(#1296) (2c822d3)

  • Removed the ability to configure the header format; headers will always be sent in 'string' format.
  • Removed support for 'binary' format and code related to sending headers in 'binary' or 'both' formats.
  • Migration: Remove any references to the environment variable INSTANA_KAFKA_HEADER_FORMAT or the in-code configuration option for tracing: { kafka: { headerFormat: .... }}}.

• Dropped support for X-Instana-Service header (#1355) (7aa5f4b)

  • Migration: Please configure the Instana agent to capture the X-Instana-Service header in the agent's configuration file.
  • For details, see: specify-the-x-instana-service-http-header.

• Dropped support for disabling AWS SDK instrumentation in old syntax. (#1383) (48bebf3)
  (48bebf3))

  • Removed the old syntax, disabledTracers: ['aws-sdk/v2/index'].
  • Migration: Use the new syntax for disabling instrumentation: disabledTracers: ['aws-sdk/v2'].

• Removed deprecated INSTANA_URL and INSTANA_KEY environment variables(#1373) (955cf67)

  • Migration: Any references to these variables should be replaced with the environment variables INSTANA_ENDPOINT_URL and INSTANA_AGENT_KEY.

• Dropped support for q library (#1377) (c7f1fa5)

🐞 Fixes

• shared-metrics: replaced fs-extra with fs promises (#1362) (35ec19c)
• Deprecated kafka-avro library (#1337) (5647c3f)