c04341edb2
This change adds a GetRequiredPlugins RPC method to the language host, enabling us to query it for its list of plugin requirements. This is language-specific because it requires looking at the set of dependencies (e.g., package.json files). It also adds a call up front during any update/preview operation to compute the set of plugins and require that they are present. These plugins are populated in the cache and will be used for all subsequent plugin-related operations during the engine's activity. We now cache the language plugins, so that we may load them eagerly too, which we never did previously due to the fact that we needed to pass the monitor address at load time. This was a bit bizarre anyhow, since it's really the Run RPC function that needs this information. So, to enable caching and eager loading -- which we need in order to invoke GetRequiredPlugins -- the "phone home" monitor RPC address is passed at Run time. In a subsequent change, we will switch to faulting in the plugins that are missing -- rather than erroring -- in addition to supporting the `pulumi plugin install` CLI command.
122 lines
3.5 KiB
Go
122 lines
3.5 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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"strings"
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"github.com/blang/semver"
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"github.com/golang/glog"
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pbempty "github.com/golang/protobuf/ptypes/empty"
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"github.com/pulumi/pulumi/pkg/resource"
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"github.com/pulumi/pulumi/pkg/tokens"
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"github.com/pulumi/pulumi/pkg/util/contract"
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"github.com/pulumi/pulumi/pkg/workspace"
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pulumirpc "github.com/pulumi/pulumi/sdk/proto/go"
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)
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// analyzer reflects an analyzer plugin, loaded dynamically for a single suite of checks.
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type analyzer struct {
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ctx *Context
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name tokens.QName
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plug *plugin
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client pulumirpc.AnalyzerClient
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}
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// NewAnalyzer binds to a given analyzer's plugin by name and creates a gRPC connection to it. If the associated plugin
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// could not be found by name on the PATH, or an error occurs while creating the child process, an error is returned.
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func NewAnalyzer(host Host, ctx *Context, name tokens.QName) (Analyzer, error) {
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// Load the plugin's path by using the standard workspace logic.
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path, err := workspace.GetPluginPath(
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workspace.AnalyzerPlugin, strings.Replace(string(name), tokens.QNameDelimiter, "_", -1), nil)
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if err != nil {
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return nil, err
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} else if path == "" {
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return nil, NewPluginMissingError(workspace.PluginInfo{
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Kind: workspace.AnalyzerPlugin,
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Name: string(name),
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})
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}
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plug, err := newPlugin(ctx, path, fmt.Sprintf("%v (analyzer)", name), []string{host.ServerAddr()})
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if err != nil {
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return nil, err
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}
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contract.Assertf(plug != nil, "unexpected nil analyzer plugin for %s", name)
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return &analyzer{
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ctx: ctx,
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name: name,
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plug: plug,
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client: pulumirpc.NewAnalyzerClient(plug.Conn),
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}, nil
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}
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func (a *analyzer) Name() tokens.QName { return a.name }
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// label returns a base label for tracing functions.
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func (a *analyzer) label() string {
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return fmt.Sprintf("Analyzer[%s]", a.name)
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}
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// Analyze analyzes a single resource object, and returns any errors that it finds.
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func (a *analyzer) Analyze(t tokens.Type, props resource.PropertyMap) ([]AnalyzeFailure, error) {
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label := fmt.Sprintf("%s.Analyze(%s)", a.label(), t)
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glog.V(7).Infof("%s executing (#props=%d)", label, len(props))
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mprops, err := MarshalProperties(props, MarshalOptions{})
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if err != nil {
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return nil, err
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}
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resp, err := a.client.Analyze(a.ctx.Request(), &pulumirpc.AnalyzeRequest{
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Type: string(t),
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Properties: mprops,
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})
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if err != nil {
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glog.V(7).Infof("%s failed: err=%v", label, err)
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return nil, err
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}
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var failures []AnalyzeFailure
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for _, failure := range resp.GetFailures() {
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failures = append(failures, AnalyzeFailure{
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Property: resource.PropertyKey(failure.Property),
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Reason: failure.Reason,
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})
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}
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glog.V(7).Infof("%s success: failures=#%d", label, len(failures))
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return failures, nil
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}
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// GetPluginInfo returns this plugin's information.
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func (a *analyzer) GetPluginInfo() (workspace.PluginInfo, error) {
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label := fmt.Sprintf("%s.GetPluginInfo()", a.label())
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glog.V(7).Infof("%s executing", label)
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resp, err := a.client.GetPluginInfo(a.ctx.Request(), &pbempty.Empty{})
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if err != nil {
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glog.V(7).Infof("%s failed: err=%v", a.label(), err)
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return workspace.PluginInfo{}, err
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}
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var version *semver.Version
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if v := resp.Version; v != "" {
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sv, err := semver.ParseTolerant(v)
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if err != nil {
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return workspace.PluginInfo{}, err
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}
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version = &sv
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}
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return workspace.PluginInfo{
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Name: a.plug.Bin,
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Kind: workspace.AnalyzerPlugin,
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Version: version,
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}, nil
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}
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// Close tears down the underlying plugin RPC connection and process.
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func (a *analyzer) Close() error {
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return a.plug.Close()
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}
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