66 lines
2 KiB
Go
66 lines
2 KiB
Go
// Copyright 2016-2018, Pulumi Corporation. All rights reserved.
|
|
|
|
package provider
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
|
|
"github.com/pkg/errors"
|
|
"google.golang.org/grpc"
|
|
|
|
"github.com/pulumi/pulumi/pkg/util/cmdutil"
|
|
"github.com/pulumi/pulumi/pkg/util/rpcutil"
|
|
pulumirpc "github.com/pulumi/pulumi/sdk/proto/go"
|
|
)
|
|
|
|
// Tracing is the optional command line flag passed to this provider for configuring a Zipkin-compatible tracing
|
|
// endpoint
|
|
var tracing string
|
|
|
|
// Main is the typical entrypoint for a resource provider plugin. Using it isn't required but can cut down
|
|
// significantly on the amount of boilerplate necessary to fire up a new resource provider.
|
|
func Main(name string, provMaker func(*HostClient) (pulumirpc.ResourceProviderServer, error)) error {
|
|
flag.StringVar(&tracing, "tracing", "", "Emit tracing to a Zipkin-compatible tracing endpoint")
|
|
flag.Parse()
|
|
|
|
// Initialize loggers before going any further.
|
|
cmdutil.InitLogging(false, 0, false)
|
|
cmdutil.InitTracing(name, tracing)
|
|
|
|
// Read the non-flags args and connect to the engine.
|
|
args := flag.Args()
|
|
if len(args) == 0 {
|
|
return errors.New("fatal: could not connect to host RPC; missing argument")
|
|
}
|
|
host, err := NewHostClient(args[0])
|
|
if err != nil {
|
|
return errors.Errorf("fatal: could not connect to host RPC: %v", err)
|
|
}
|
|
|
|
// Fire up a gRPC server, letting the kernel choose a free port for us.
|
|
port, done, err := rpcutil.Serve(0, nil, []func(*grpc.Server) error{
|
|
func(srv *grpc.Server) error {
|
|
prov, proverr := provMaker(host)
|
|
if proverr != nil {
|
|
return fmt.Errorf("failed to create resource provider: %v", proverr)
|
|
}
|
|
pulumirpc.RegisterResourceProviderServer(srv, prov)
|
|
return nil
|
|
},
|
|
})
|
|
if err != nil {
|
|
return errors.Errorf("fatal: %v", err)
|
|
}
|
|
|
|
// The resource provider protocol requires that we now write out the port we have chosen to listen on.
|
|
fmt.Printf("%d\n", port)
|
|
|
|
// Finally, wait for the server to stop serving.
|
|
if err := <-done; err != nil {
|
|
return errors.Errorf("fatal: %v", err)
|
|
}
|
|
|
|
return nil
|
|
}
|