rob05c opened a new pull request #4433: Fix broken ORT caching resulting in malformed config files, using JSON URL: https://github.com/apache/trafficcontrol/pull/4433 See #4432 - this is an alternative to that PR, using JSON, which make an ORT run ~50% slower than CBOR, but doesn't require upgrading Go to 1.12. I'll let the community decide which to merge. Fixes ORT caching to JSON. The current Gob encoding is fundamentally broken. See https://github.com/golang/go/issues/4609 . It's not isomorphic: it does not decode what in encodes. In practical terms, default values like 0 become null pointers, resulting in missing remap lines in the config. This changes the default to JSON. It also adds a unit test, to verify the default cache format is isomorphic. Gob fails the test, CBOR and JSON pass it. Includes tests. No docs, no changelog, no interface change. - [x] This PR fixes is not related to any other Issue ## Which Traffic Control components are affected by this PR? - Traffic Ops ORT ## What is the best way to verify this PR? Run unit tests. Generate remap.config with assigned delivery services of type "HTTP" (which is represented by `0`, the default int value). Without this fix, remap lines will be missing. With fix, config file should have appropriate remap lines for HTTP DSes. ## If this is a bug fix, what versions of Traffic Control are affected? - master - 4.0.x ## The following criteria are ALL met by this PR - [x] This PR includes tests OR I have explained why tests are unnecessary - [x] This PR includes documentation OR I have explained why documentation is unnecessary - [x] This PR includes an update to CHANGELOG.md OR such an update is not necessary - [x] This PR includes any and all required license headers - [x] This PR ensures that database migration sequence is correct OR this PR does not include a database migration - [x] This PR **DOES NOT FIX A SERIOUS SECURITY VULNERABILITY** (see [the Apache Software Foundation's security guidelines](https://www.apache.org/security/) for details) ## Additional Information
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