81 lines
2.5 KiB
Go
81 lines
2.5 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/golang/glog"
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"github.com/pulumi/lumi/pkg/resource"
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"github.com/pulumi/lumi/pkg/tokens"
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"github.com/pulumi/lumi/sdk/go/pkg/lumirpc"
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)
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const analyzerPrefix = "lumi-analyzer"
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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 lumirpc.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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// Search for the analyzer on the path.
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srvexe := analyzerPrefix + "-" + strings.Replace(string(name), tokens.QNameDelimiter, "_", -1)
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// Now go ahead and attempt to load the plugin.
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plug, err := newPlugin(host, ctx, []string{srvexe}, fmt.Sprintf("analyzer[%v]", name))
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if err != nil {
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return nil, err
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}
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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: lumirpc.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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// 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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glog.V(7).Infof("analyzer[%v].Analyze(t=%v,#props=%v) executing", a.name, t, len(props))
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pstr, unks := MarshalPropertiesWithUnknowns(a.ctx, props, MarshalOptions{
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OldURNs: true, // permit old URNs, since this is pre-update.
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RawResources: true, // often used during URN creation; IDs won't be ready.
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})
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req := &lumirpc.AnalyzeRequest{
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Type: string(t),
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Properties: pstr,
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Unknowns: unks,
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}
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resp, err := a.client.Analyze(a.ctx.Request(), req)
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if err != nil {
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glog.V(7).Infof("analyzer[%v].Analyze(t=%v,...) failed: err=%v", a.name, t, 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("analyzer[%v].Analyze(t=%v,...) success: failures=#%v", a.name, t, len(failures))
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return failures, 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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