83 lines
2.3 KiB
Go
83 lines
2.3 KiB
Go
// Copyright 2016-2017, Pulumi Corporation. All rights reserved.
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package plugin
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import (
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"strconv"
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pbempty "github.com/golang/protobuf/ptypes/empty"
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"github.com/pkg/errors"
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"golang.org/x/net/context"
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"google.golang.org/grpc"
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"github.com/pulumi/pulumi-fabric/pkg/diag"
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"github.com/pulumi/pulumi-fabric/pkg/util/rpcutil"
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lumirpc "github.com/pulumi/pulumi-fabric/sdk/proto/go"
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)
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// hostServer is the server side of the host RPC machinery.
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type hostServer struct {
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host Host // the host for this RPC server.
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ctx *Context // the associated plugin context.
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port int // the port the host is listening on.
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cancel chan bool // a channel that can cancel the server.
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done chan error // a channel that resolves when the server completes.
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}
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// newHostServer creates a new host server wired up to the given host and context.
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func newHostServer(host Host, ctx *Context) (*hostServer, error) {
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// New up an engine RPC server.
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engine := &hostServer{
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host: host,
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ctx: ctx,
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cancel: make(chan bool),
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}
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// Fire up a gRPC server and start listening for incomings.
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port, done, err := rpcutil.Serve(0, engine.cancel, []func(*grpc.Server) error{
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func(srv *grpc.Server) error {
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lumirpc.RegisterEngineServer(srv, engine)
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return nil
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},
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})
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if err != nil {
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return nil, err
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}
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engine.port = port
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engine.done = done
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return engine, nil
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}
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// Address returns the address at which the engine's RPC server may be reached.
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func (eng *hostServer) Address() string {
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return ":" + strconv.Itoa(eng.port)
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}
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// Cancel signals that the engine should be terminated, awaits its termination, and returns any errors that result.
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func (eng *hostServer) Cancel() error {
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eng.cancel <- true
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return <-eng.done
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}
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// Log logs a global message in the engine, including errors and warnings.
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func (eng *hostServer) Log(ctx context.Context,
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req *lumirpc.LogRequest) (*pbempty.Empty, error) {
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var sev diag.Severity
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switch req.Severity {
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case lumirpc.LogSeverity_DEBUG:
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sev = diag.Debug
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case lumirpc.LogSeverity_INFO:
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sev = diag.Info
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case lumirpc.LogSeverity_WARNING:
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sev = diag.Warning
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case lumirpc.LogSeverity_ERROR:
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sev = diag.Error
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default:
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return nil, errors.Errorf("Unrecognized logging severity: %v", req.Severity)
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}
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eng.host.Log(sev, req.Message)
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return &pbempty.Empty{}, nil
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}
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