Previously we believe it was necessary for all code that required ports
to use freeport to prevent conflicts.
https://github.com/dnephin/freeport-test shows that it is actually save
to use port 0 (`127.0.0.1:0`) as long as it is passed directly to
`net.Listen`, and the listener holds the port for as long as it is
needed.
This works because freeport explicitly avoids the ephemeral port range,
and port 0 always uses that range. As you can see from the test output
of https://github.com/dnephin/freeport-test, the two systems never use
overlapping ports.
This commit converts all uses of freeport that were being passed
directly to a net.Listen to use port 0 instead. This allows us to remove
a bit of wrapping we had around httptest, in a couple places.
* command/redirect_traffic: add rules to redirect DNS to Consul. Currently uses a hack to get the consul dns service ip, and this hack only works when the service is deployed in the same namespace as consul.
* command/redirect_traffic: redirect DNS to Consul when -consul-dns-ip is passed in
* Add unit tests to Consul DNS IP table redirect rules
Co-authored-by: Ashwin Venkatesh <ashwin@hashicorp.com>
Co-authored-by: Iryna Shustava <ishustava@users.noreply.github.com>
Existing config entries prefixed by service- are specific to individual
services. Since this config entry applies to partitions it is being
renamed.
Additionally, the Partition label was changed to Name because using
Partition at the top-level and in the enterprise meta was leading to the
enterprise meta partition being dropped by msgpack.
The DebugConfig in the self endpoint can change at any time. It's not a stable API.
This commit adds the XDSPort to a stable part of the XDS api, and changes the envoy command to read
this new field.
It includes support for the old API as well, in case a newer CLI is used with an older API, and
adds a test for both cases.
The unix timestamps that were used make the debug data a little bit more
difficult to consume. By using human readable dates we can easily see
when the profile data was collected.
This commit also improves the test coverage. Two test cases are removed
and the assertions from those cases are moved to TestDebugCommand.
Now TestDebugCommand is able to validate the contents of all files. This
change reduces the test runtime of the command/debug package by almost
50%. It also makes much more strict assertions about the contents by
using gotest.tools/v3/fs.
Some previous changes broke interrupting the debug on SigInterupt. This change restores
the original behaviour by passing a context to requests.
Since a new API client function was required to pass the context, I had
it also return an io.ReadCloser, so that output can be streamed to files
instead of fully buffering in process memory.
Daniel Nephin