9599ea2e55
We now build and run cleanly locally (for unit tests). The integration tests are still on the floor at the moment.
77 lines
2.6 KiB
Go
77 lines
2.6 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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"fmt"
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"path/filepath"
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"strings"
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"github.com/golang/glog"
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"github.com/pulumi/pulumi-fabric/pkg/tokens"
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"github.com/pulumi/pulumi-fabric/pkg/workspace"
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lumirpc "github.com/pulumi/pulumi-fabric/sdk/proto/go"
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)
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const LanguagePluginPrefix = "lumi-langhost-"
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// langhost reflects a language host plugin, loaded dynamically for a single language/runtime pair.
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type langhost struct {
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ctx *Context
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runtime string
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plug *plugin
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client lumirpc.LanguageRuntimeClient
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}
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// NewLanguageRuntime binds to a language's runtime plugin and then creates a gRPC connection to it. If the
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// plugin could not be found, or an error occurs while creating the child process, an error is returned.
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func NewLanguageRuntime(host Host, ctx *Context, runtime string) (LanguageRuntime, error) {
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// Setup the search paths; first, the naked name (found on the PATH); next, the fully qualified name.
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srvexe := LanguagePluginPrefix + strings.Replace(runtime, tokens.QNameDelimiter, "_", -1)
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paths := []string{
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srvexe, // naked PATH.
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filepath.Join(workspace.InstallRoot(), srvexe), // qualified name.
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}
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// Now go ahead and attempt to load the plugin.
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plug, err := newPlugin(host, ctx, paths, fmt.Sprintf("langhost[%v]", runtime))
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if err != nil {
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return nil, err
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}
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return &langhost{
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ctx: ctx,
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runtime: runtime,
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plug: plug,
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client: lumirpc.NewLanguageRuntimeClient(plug.Conn),
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}, nil
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}
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func (h *langhost) Runtime() string { return h.runtime }
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// Run executes a program in the language runtime for planning or deployment purposes. If info.DryRun is true,
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// the code must not assume that side-effects or final values resulting from resource deployments are actually
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// available. If it is false, on the other hand, a real deployment is occurring and it may safely depend on these.
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func (h *langhost) Run(info RunInfo) (string, error) {
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glog.V(7).Infof("langhost[%v].Run(pwd=%v,program=%v,#args=%v,#config=%v,dryrun=%v) executing",
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h.runtime, info.Pwd, info.Program, len(info.Args), len(info.Config), info.DryRun)
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req := lumirpc.RunRequest(info)
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resp, err := h.client.Run(h.ctx.Request(), &req)
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if err != nil {
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glog.V(7).Infof("resource[%v].Run(pwd=%v,program=%v,...,dryrun=%v) failed: err=%v",
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info.Pwd, info.Program, info.DryRun, err)
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return "", err
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}
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progerr := resp.GetError()
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glog.V(7).Infof("resource[%v].RunPlan(pwd=%v,program=%v,...,dryrun=%v) success: progerr=%v",
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info.Pwd, info.Program, info.DryRun, progerr)
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return progerr, nil
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}
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// Close tears down the underlying plugin RPC connection and process.
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func (h *langhost) Close() error {
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return h.plug.Close()
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}
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