Infinite Tracing payload compression and batching

[toddwest]

Overview

This PR adds support for Infinite Tracing payloads to be both compressed and batched by default. The following changes are included as part of this work:

• Implements support for compressing infinite tracing payloads
• gzip compression is enabled by default for batching and non-batching configurations
• Implements support for batching spans within infinite tracing payloads
• Defaults for batching are:
  • Batching enabled by default
  • Up to 100 spans bundled per batch
  • Waiting (linger) for up to 5s to fill up the batch before sending

The span data is still streaming over HTTP/2 using gRPC but utilizing compression and batching will significantly reduce payload sizes and bytes over the wire, resulting in significantly lower network transfer costs for customers.

Testing

All new functionality has been covered with unit tests where possible.

Checks

• Are your contributions backwards compatible with relevant frameworks and APIs?

  • Yes

• Does your code contain any breaking changes?

  • No (although infinite tracing defaults are changing)

• Does your code introduce any new dependencies?

  • Only a testImplementation dependency for parameterized tests

[jasonjkeller]

Whoever reviews this PR, make sure that it is in alignment with the agent spec: https://source.datanerd.us/agents/agent-specs/pull/597

[kford-newrelic]

@toddwest thanks for the PR! We've got a number of things in our ToDo list that we have to take care of first but we're going to try and get this in this Jan-Mar quarter!

[kford-newrelic]

@toddwest we had to bump this out to the Apr-Jun quarter since we're over-capacity for the current quarter

[CLAassistant]

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[toddwest]

Thanks for the reminder @jasonjkeller. Went ahead and updated to bring the PR in line with the spec.

@kford-newrelic I'm happy to spend an hour walking through the PR with the team if that could help expedite the review process? I think a lot of customers would get some significant relief from these changes.

[jtduffy]

• All PR tests passed from the branch I created from the fork.
• Tested infinite tracing successfully