These changes implement `GetRequiredPlugins` for Go using a registry
mechanism and an alternate entry point for `pulumi.Run`. Packages that
require plugins are expected to register themselves with the Pulumi SDK.
When `pulumi.Run` is used and the `PULUMI_PLUGINS` envvar is truthy, the
program will dump a JSON-encoded description of its required plugins to
stdout. The language host then uses this description to respond to
* Fix some tracing issues.
- Add endpoints for `startUpdate` and `postEngineEventsBatch` so that
spans for these invocations have proper names
- Inject a tracing span when walking a plan so that resource operations
are properly parented
- When handling gRPC calls, inject a tracing span into the call's
metadata if no span is already present so that resource monitor and
engine spans are properly parented
- Do not trace client gRPC invocations of the empty method so that these
calls (which are used to determine server availability) do not muddy
the trace. Note that I tried parenting these spans appropriately, but
doing so broke the trace entirely.
With these changes, the only unparented span in a typical Pulumi
invocation is a single call to `getUser`. This span is unparented
because that call does not have a context available. Plumbing a context
into that particular call is surprisingly tricky, as it is often called
by other context-less functions.
* Make tracing support more flexible.
- Add support for writing trace data to a local file using Appdash
- Add support for viewing Appdash traces via the CLI
We run the same suite of changes that we did on gometalinter. This
ended up catching a few new issues, some of which were addressed and
some of which were baselined.
* Search for Go project executables in more places than just $PATH
This searches the following in preferred order:
1. Local directory
2. $GOPATH/bin
3. In $PATH
* Check if program is not a directory before executing
This change primarily does two things:
* Adds output marshaling.
* Adds tests for roundtripping inputs to outputs.
It also
* Fixes a bug in the verification of asset archives.
* Change input types to simply `interface{}` and `map[string]interface{}`.
There is no need for wrapper types. This is more idiomatic.
* Reject output properties upon marshaling failure.
* Don't support time.Time as a marshaling concept. This was getting too
cute. It's not clear what its marshaling format ought to be.
This adds rudimentary support for Pulumi programs written in Go. It
is not complete yet but the basic resource registration works.
Note that, stylistically speaking, Go is a bit different from our other
languages. This made it a bit easier to build this initial prototype,
since what we want is actually a rather thin veneer atop our existing
RPC interfaces. The lack of generics, however, adds some friction and
is something I'm continuing to hammer on; this will most likely lead to
little specialized types (e.g. StringOutput) once the dust settles.
There are two primary components:
1) A new language host, `pulumi-language-go`, which is responsible for
communicating with the engine through the usual gRPC interfaces.
Because Go programs are pre-compiled, it very simply loads a binary
with the same name as the project.
2) A client SDK library that Pulumi programs bind against. This exports
the core resource types -- including assets -- properties -- including
output properties -- and configuration.
Most remaining TODOs are marked as such in the code, and this will not
be merged until they have been addressed, and some better tests written.
