Windows support for the synchronous shim

[jsturtevant]

Fixes: #4

This adds Windows support for the synchronous shim on windows. It builds on the support added to ttrpc-rust for Windows. It does require a couple updates (containerd/ttrpc-rust#182 and containerd/ttrpc-rust#185) and a release from that project.

Couple things to note:

• Windows doesn't have the same signal handling as Linux so this adds a real basic implementation (thanks @danbugs for helping). It looks like the Linux implementation uses SIGCHILD to handle child processes but Windows doesn't have a similar concept. If required down the line we could look into something as described in https://learn.microsoft.com/en-us/previous-versions/ms811896(v=msdn.10)#signals-and-signal-handling
• Windows shim logging is implemented using named Pipes in Containerd. I've added detailed comments in the code on some assumptions. The file logger does work for windows so I didn't completely remove it from compiling on windows, in case we wanted to make that configurable (it mostly makes debugging this crate easier).
• The windows shim activation is slightly different. Again I've left comments inline but the basic pattern comes from https://github.com/microsoft/hcsshim/blob/v0.10.0-rc.7/cmd/containerd-shim-runhcs-v1/serve.go#L57-L70. This seemed simpler than re-writing the rust command implementation in this repository but does add some complexity to how the shim boots.
• There are several crate in here that either won't ever work (runc) or I didn't focus on initially. This means the cargo build from root won't just work. This means a user would need to call cargo build from the crate folders that do support windows (shim/shim-protos)

Todo:

• add a Windows pipeline to validate code
• respond to initial feedback
• get a release of ttrpc

[mxpv]

This is awesome!
Would be nice to add windows target to our CI to run tests on Windows
(and fix clippy/rustfmt complains)

[jsturtevant]

Would be nice to add windows target to our CI to run tests on Windows

💯 one of the tasks I have to take care to get this out of draft. Thanks for the quick response!

[jsturtevant]

Would be nice to add windows target to our CI to run tests on Windows

💯 one of the tasks I have to take care to get this out of draft. Thanks for the quick response!

I've added a job for Windows. Since it only supports a subset of the workspaces right now, it is is own job. Also note until (containerd/ttrpc-rust#182 and containerd/ttrpc-rust#185) both merge the unit tests on windows are flaky.

[jsturtevant]

the ubuntu 20.04 failure doesn't look related:

sudo -E PATH=$PATH make integration
  shell: /usr/bin/bash -e {0}
  env:
    GOPROXY: direct
    TEST_RUNTIME: io.containerd.runc.v2-rs
    TESTFLAGS_PARALLEL: 1
    EXTRA_TESTFLAGS: -no-criu -test.skip='(TestContainerPTY|TestContainerExecLargeOutputWithTTY|TestTaskUpdate|TestTaskResize)'
    TESTFLAGS_RACE: -race
+ integration
go: google.golang.org/genproto@v0.0.0-202[3](https://github.com/containerd/rust-extensions/actions/runs/4825275170/jobs/8595977056?pr=139#step:7:3)0306155012-7f2fa6fef1f[4](https://github.com/containerd/rust-extensions/actions/runs/4825275170/jobs/8595977056?pr=139#step:7:4) requires
	cloud.google.com/go/bigquery@v1.48.0 requires
	github.com/apache/arrow/go/v10@v10.0.1 requires
	gonum.org/v1/gonum@v0.11.0 requires
	golang.org/x/exp@v0.0.0-20191002040644-a13[5](https://github.com/containerd/rust-extensions/actions/runs/4825275170/jobs/8595977056?pr=139#step:7:5)5ae1e2c3 requires
	golang.org/x/mobile@v0.0.0-20190719004257-d2bd2a29d028: invalid version: git ls-remote -q origin in /home/runner/go/pkg/mod/cache/vcs/1ba9cdedc[6](https://github.com/containerd/rust-extensions/actions/runs/4825275170/jobs/8595977056?pr=139#step:7:6)63bd56a968[7](https://github.com/containerd/rust-extensions/actions/runs/4825275170/jobs/8595977056?pr=139#step:7:7)f5910f19e1ac5f7f472742441d370be599c409f[8](https://github.com/containerd/rust-extensions/actions/runs/4825275170/jobs/8595977056?pr=139#step:7:8)7ec: exit status [12](https://github.com/containerd/rust-extensions/actions/runs/4825275170/jobs/8595977056?pr=139#step:7:13)8:
	fatal: unable to access 'https://go.googlesource.com/mobile/': The requested URL returned error: 502

[jsturtevant]

I think this is ready for review, just waiting for a few merges and a release from ttrpc-rust which should be soon 🤞 . I will leave temporary commits and leave it in draft until then.

[jsturtevant]

nothing major changed in the ttrpc version I had pinned and the released crate. Not sure if something else changed to cuase the integration tests to fail. I might split out the ttrpc verion upgrade anyways (not sure what this repositories standards are but that is generally asked for in other repos I've worked in).

[jsturtevant]

oh, looks like nightly CI started failing last week: https://github.com/containerd/rust-extensions/actions with the first failure in https://github.com/containerd/rust-extensions/actions/runs/5273246763

[jsturtevant]

ttrpc 0.8.0 has been released! I've moved this from draft to ready for review.

I might split out the ttrpc verion upgrade anyways (not sure what this repositories standards are but that is generally asked for in other repos I've worked in).

@mxpv thoughts?

[jsturtevant]

ci is passing again after #148