Now that we enter the container namespace to fetch IPs for every
container, there is no need to have 'weave ps' do it.
This does mean we lose Weave MAC addresses, but that is a rather
idiosyncratic feature anyway.
Instead of using Docker, because after Weave Net 2.0 there are no proxy nor
plugin containers.
This has the drawback of not detecting the plugin/proxy in systems running
Weave Net < 2.0 , but I think we can live with it.
* The Stderr pipe should be read before waiting
* The Stderr pipe should not be used with Run/Output. See https://golang.org/pkg/os/exec/#Cmd.StderrPipe:
Wait will close the pipe after seeing the command exit, so most callers need
not close the pipe themselves; however, an implication is that it is incorrect
to call Wait before all reads from the pipe have completed. For the same
reason, it is incorrect to use Run when using StderrPipe.
* New encoding format:
* Msgpack reports between probe<->app (smaller representation, faster to
encode/decode).
* Still use JSON between app<->UI (try to avoid making javascript deal with
mspack).
The app still suports publishing reports in both gob and JSON, not braking
backwards compatibility.
* Use compile-time generated marshallers/unmarshallers for higher performance. In
order to be able to skip code-generation for certain types, I included
https://github.com/2opremio/go-1/tree/master/codec/codecgen instead of
upstream until https://github.com/ugorji/go/pull/139 is merged.
* Encode/decode intermediate types using github.com/ugorji/go/codec.Selfer
for higher performance and reducing garbage collection (no temporary buffers).
- Run the Weave integrations regardless of if weave is detected.
- Make everything backoff and not spam the logs.
- Add miekg dns to vendor.
- Have the app periodically register with weaveDNS, and the probe do lookups there.
- Decide what the local networks are at runtime, not once at startup.
- Correctly resolve app ids, fixes#825
