mirror of https://github.com/pulumi/pulumi.git
124 lines
3.6 KiB
Go
124 lines
3.6 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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"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, NewMissingError(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: string(a.name),
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Path: 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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