This change adds an optiona dependsOn parameter to Resource constructors, to "force" a fake dependency between resources. We have an extremely strong desire to resort to using this only in unusual cases -- and instead rely on the natural dependency DAG based on properties -- but experience in other resource provisioning frameworks tells us that we're likely to need this in the general case. Indeed, we've already encountered the need in AWS's API Gateway resources... and I suspect we'll run into more especially as we tackle non-serverless resources like EC2 Instances, where "ambient" dependencies are far more commonplace. This also makes parallelism the default mode of operation, and we have a new --serialize flag that can be used to suppress this default behavior. Full disclosure: I expect this to become more Make-like, i.e. -j 8, where you can specify the precise width of parallelism, when we tackle pulumi/pulumi-fabric#106. I also think there's a good chance we will flip the default, so that serial execution is the default, so that developers who don't benefit from the parallelism don't need to worry about dependsOn in awkward ways. This tends to be the way most tools (like Make) operate. This fixes pulumi/pulumi-fabric#335.
647 lines
20 KiB
Go
647 lines
20 KiB
Go
// Copyright 2017, Pulumi Corporation. All rights reserved.
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package engine
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import (
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"bytes"
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"fmt"
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"sort"
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"strconv"
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"strings"
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"github.com/pkg/errors"
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"github.com/pulumi/pulumi-fabric/pkg/diag"
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"github.com/pulumi/pulumi-fabric/pkg/diag/colors"
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"github.com/pulumi/pulumi-fabric/pkg/resource"
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"github.com/pulumi/pulumi-fabric/pkg/resource/deploy"
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"github.com/pulumi/pulumi-fabric/pkg/resource/plugin"
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"github.com/pulumi/pulumi-fabric/pkg/tokens"
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"github.com/pulumi/pulumi-fabric/pkg/util/contract"
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)
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type PlanOptions struct {
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Package string // the package to compute the plan for
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Environment string // the environment to use when planning
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Analyzers []string // an optional set of analyzers to run as part of this deployment.
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Debug bool // true to enable resource debugging output.
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Serialize bool // true to serialize resource operations.
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ShowConfig bool // true to show the configuration variables being used.
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ShowReplacementSteps bool // true to show the replacement steps in the plan.
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ShowSames bool // true to show the resources that aren't updated, in addition to those that are.
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Summary bool // true if we should only summarize resources and operations.
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}
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func (eng *Engine) Plan(opts PlanOptions) error {
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// Initialize the diagnostics logger with the right stuff.
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eng.InitDiag(diag.FormatOptions{
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Colors: true,
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Debug: opts.Debug,
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})
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info, err := eng.initEnvCmdName(tokens.QName(opts.Environment), opts.Package)
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if err != nil {
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return err
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}
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deployOpts := deployOptions{
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Debug: opts.Debug,
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Destroy: false,
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DryRun: true,
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Analyzers: opts.Analyzers,
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Serialize: opts.Serialize,
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ShowConfig: opts.ShowConfig,
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ShowReplacementSteps: opts.ShowReplacementSteps,
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ShowSames: opts.ShowSames,
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Summary: opts.Summary,
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}
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result, err := eng.plan(info, deployOpts)
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if err != nil {
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return err
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}
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if result != nil {
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defer contract.IgnoreClose(result)
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if err := eng.printPlan(result, deployOpts); err != nil {
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return err
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}
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}
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if !eng.Diag().Success() {
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// If any error occurred while walking the plan, be sure to let the developer know. Otherwise,
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// although error messages may have spewed to the output, the final lines of the plan may look fine.
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return errors.New("One or more errors occurred during the creation of this plan")
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}
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return nil
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}
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// plan just uses the standard logic to parse arguments, options, and to create a snapshot and plan.
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func (eng *Engine) plan(info *envCmdInfo, opts deployOptions) (*planResult, error) {
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contract.Assert(info != nil)
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contract.Assert(info.Target != nil)
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// Create a context for plugins.
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ctx, err := plugin.NewContext(eng.Diag(), nil)
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if err != nil {
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return nil, err
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}
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// First, load the package metadata, in preparation for executing it and creating resources.
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pkginfo, err := eng.readPackageFromArg(info.PackageArg)
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if err != nil {
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return nil, errors.Errorf("Error loading package: %v", err)
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}
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contract.Assert(pkginfo != nil)
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// If that succeeded, create a new source that will perform interpretation of the compiled program.
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// TODO[pulumi/pulumi-fabric#88]: we are passing `nil` as the arguments map; we need to allow a way to pass these.
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source := deploy.NewEvalSource(ctx, &deploy.EvalRunInfo{
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Pkg: pkginfo.Pkg,
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Pwd: pkginfo.Root,
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Config: info.Target.Config,
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}, opts.Destroy, opts.DryRun)
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// If there are any analyzers in the project file, add them.
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var analyzers []tokens.QName
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if as := pkginfo.Pkg.Analyzers; as != nil {
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for _, a := range *as {
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analyzers = append(analyzers, a)
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}
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}
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// Append any analyzers from the command line.
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for _, a := range opts.Analyzers {
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analyzers = append(analyzers, tokens.QName(a))
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}
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// Generate a plan; this API handles all interesting cases (create, update, delete).
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plan := deploy.NewPlan(ctx, info.Target, info.Snapshot, source, analyzers)
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return &planResult{
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Ctx: ctx,
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Info: info,
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Plan: plan,
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}, nil
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}
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type planResult struct {
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Ctx *plugin.Context // the context containing plugins and their state.
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Info *envCmdInfo // plan command information.
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Plan *deploy.Plan // the plan created by this command.
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}
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func (res *planResult) Close() error {
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return res.Ctx.Close()
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}
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func (eng *Engine) printPlan(result *planResult, opts deployOptions) error {
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// First print config/unchanged/etc. if necessary.
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var prelude bytes.Buffer
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printPrelude(&prelude, result, opts, true)
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// Now walk the plan's steps and and pretty-print them out.
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prelude.WriteString(fmt.Sprintf("%vPlanning changes:%v\n", colors.SpecUnimportant, colors.Reset))
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fmt.Fprint(eng.Stdout, colors.Colorize(&prelude))
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iter, err := result.Plan.Start(deploy.Options{})
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if err != nil {
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return errors.Errorf("An error occurred while preparing the plan: %v", err)
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}
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defer contract.IgnoreClose(iter)
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step, err := iter.Next()
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if err != nil {
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return errors.Errorf("An error occurred while enumerating the plan: %v", err)
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}
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var summary bytes.Buffer
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counts := make(map[deploy.StepOp]int)
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for step != nil {
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var err error
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// Perform the pre-step.
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if err = step.Pre(); err != nil {
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return errors.Errorf("An error occurred preparing the plan: %v", err)
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}
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// Print this step information (resource and all its properties).
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// IDEA: it would be nice if, in the output, we showed the dependencies a la `git log --graph`.
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if shouldShow(step, opts) {
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printStep(&summary, step, opts.Summary, true, "")
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}
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// Be sure to skip the step so that in-memory state updates are performed.
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if err = step.Skip(); err != nil {
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return errors.Errorf("An error occurred while advancing the plan: %v", err)
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}
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// Track the operation if shown and/or if it is a logically meaningful operation.
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if step.Logical() {
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counts[step.Op()]++
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}
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if step, err = iter.Next(); err != nil {
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return errors.Errorf("An error occurred while viewing the plan: %v", err)
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}
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}
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// Print a summary of operation counts.
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printChangeSummary(&summary, counts, true)
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fmt.Fprint(eng.Stdout, colors.Colorize(&summary))
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return nil
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}
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// shouldShow returns true if a step should show in the output.
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func shouldShow(step deploy.Step, opts deployOptions) bool {
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// For certain operations, whether they are tracked is controlled by flags (to cut down on superfluous output).
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if step.Op() == deploy.OpSame {
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return opts.ShowSames
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} else if step.Op() == deploy.OpCreateReplacement || step.Op() == deploy.OpDeleteReplaced {
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return opts.ShowReplacementSteps
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} else if step.Op() == deploy.OpReplace {
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return !opts.ShowReplacementSteps
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}
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return true
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}
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func printPrelude(b *bytes.Buffer, result *planResult, opts deployOptions, planning bool) {
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// If there are configuration variables, show them.
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if opts.ShowConfig {
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printConfig(b, result.Info.Target.Config)
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}
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}
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func printConfig(b *bytes.Buffer, config map[tokens.ModuleMember]string) {
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b.WriteString(fmt.Sprintf("%vConfiguration:%v\n", colors.SpecUnimportant, colors.Reset))
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if config != nil {
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var keys []string
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for key := range config {
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keys = append(keys, string(key))
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}
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sort.Strings(keys)
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for _, key := range keys {
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b.WriteString(fmt.Sprintf("%v%v: %v\n", detailsIndent, key, config[tokens.ModuleMember(key)]))
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}
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}
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}
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func printChangeSummary(b *bytes.Buffer, counts map[deploy.StepOp]int, plan bool) int {
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changes := 0
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for op, c := range counts {
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if op != deploy.OpSame {
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changes += c
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}
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}
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var kind string
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if plan {
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kind = "planned"
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} else {
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kind = "deployed"
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}
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var changesLabel string
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if changes == 0 {
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kind = "required"
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changesLabel = "no"
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} else {
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changesLabel = strconv.Itoa(changes)
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}
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b.WriteString(fmt.Sprintf("%vinfo%v: %v %v %v:\n",
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colors.SpecInfo, colors.Reset, changesLabel, plural("change", changes), kind))
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var planTo string
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var pastTense string
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if plan {
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planTo = "to "
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} else {
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pastTense = "d"
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}
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// Now summarize all of the changes; we print sames a little differently.
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for _, op := range deploy.StepOps {
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if op != deploy.OpSame {
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if c := counts[op]; c > 0 {
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b.WriteString(fmt.Sprintf(" %v%v %v %v%v%v%v\n",
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op.Prefix(), c, plural("resource", c), planTo, op, pastTense, colors.Reset))
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}
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}
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}
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if c := counts[deploy.OpSame]; c > 0 {
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b.WriteString(fmt.Sprintf(" %v %v unchanged\n", c, plural("resource", c)))
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}
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return changes
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}
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func plural(s string, c int) string {
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if c != 1 {
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s += "s"
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}
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return s
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}
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const detailsIndent = " " // 4 spaces, plus 2 for "+ ", "- ", and " " leaders
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func printStep(b *bytes.Buffer, step deploy.Step, summary bool, planning bool, indent string) {
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// First print out the operation's prefix.
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b.WriteString(step.Op().Prefix())
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// Next, print the resource type (since it is easy on the eyes and can be quickly identified).
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printStepHeader(b, step)
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b.WriteString(step.Op().Suffix())
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// Next print the resource URN, properties, etc.
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if mut, ismut := step.(deploy.MutatingStep); ismut {
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var replaces []resource.PropertyKey
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if step.Op() == deploy.OpCreateReplacement {
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replaces = step.(*deploy.CreateStep).Keys()
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} else if step.Op() == deploy.OpReplace {
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replaces = step.(*deploy.ReplaceStep).Keys()
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}
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printResourceProperties(b, mut.URN(), mut.Old(), mut.New(), replaces, summary, planning, indent)
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} else {
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contract.Failf("Expected each step to either be mutating or read-only")
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}
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// Finally make sure to reset the color.
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b.WriteString(colors.Reset)
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}
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func printStepHeader(b *bytes.Buffer, step deploy.Step) {
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b.WriteString(fmt.Sprintf("%s: (%s)\n", string(step.Type()), step.Op()))
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}
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func printResourceProperties(b *bytes.Buffer, urn resource.URN, old *resource.State, new *resource.State,
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replaces []resource.PropertyKey, summary bool, planning bool, indent string) {
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indent += detailsIndent
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// Print out the URN and, if present, the ID, as "pseudo-properties".
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var id resource.ID
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if old != nil {
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id = old.ID
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}
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if id != "" {
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b.WriteString(fmt.Sprintf("%s[id=%s]\n", indent, string(id)))
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}
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if urn != "" {
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b.WriteString(fmt.Sprintf("%s[urn=%s]\n", indent, urn))
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}
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if !summary {
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// Print all of the properties associated with this resource.
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if old == nil && new != nil {
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printObject(b, new.AllInputs(), planning, indent)
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} else if new == nil && old != nil {
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printObject(b, old.AllInputs(), planning, indent)
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} else {
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printOldNewDiffs(b, old.AllInputs(), new.AllInputs(), replaces, planning, indent)
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}
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}
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}
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func maxKey(keys []resource.PropertyKey) int {
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maxkey := 0
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for _, k := range keys {
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if len(k) > maxkey {
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maxkey = len(k)
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}
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}
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return maxkey
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}
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func printObject(b *bytes.Buffer, props resource.PropertyMap, planning bool, indent string) {
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// Compute the maximum with of property keys so we can justify everything.
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keys := props.StableKeys()
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maxkey := maxKey(keys)
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// Now print out the values intelligently based on the type.
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for _, k := range keys {
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if v := props[k]; shouldPrintPropertyValue(v, planning) {
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printPropertyTitle(b, k, maxkey, indent)
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printPropertyValue(b, v, planning, indent)
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}
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}
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}
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// printResourceOutputProperties prints only those properties that either differ from the input properties or, if
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// there is an old snapshot of the resource, differ from the prior old snapshot's output properties.
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func printResourceOutputProperties(b *bytes.Buffer, step deploy.Step, indent string) {
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// Only certain kinds of steps have output properties associated with them.
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mut := step.(deploy.MutatingStep)
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if mut == nil ||
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(step.Op() != deploy.OpCreate &&
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step.Op() != deploy.OpCreateReplacement &&
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step.Op() != deploy.OpUpdate) {
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return
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}
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indent += detailsIndent
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b.WriteString(step.Op().Color())
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b.WriteString(step.Op().Suffix())
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// First fetch all the relevant property maps that we may consult.
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newins := mut.New().Inputs
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newouts := mut.New().Outputs
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var oldouts resource.PropertyMap
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if old := mut.Old(); old != nil {
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oldouts = old.Outputs
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}
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// Now sort the keys and enumerate each output property in a deterministic order.
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firstout := true
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keys := newouts.StableKeys()
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maxkey := maxKey(keys)
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for _, k := range keys {
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newout := newouts[k]
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// Print this property if it is printable, and one of these cases
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// 1) new ins has it and it's different;
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// 2) new ins doesn't have it, but old outs does, and it's different;
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// 3) neither old outs nor new ins contain it;
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if shouldPrintPropertyValue(newout, true) {
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var print bool
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if newin, has := newins[k]; has {
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print = (newout.Diff(newin) != nil) // case 1
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} else if oldouts != nil {
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if oldout, has := oldouts[k]; has {
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print = (newout.Diff(oldout) != nil) // case 2
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} else {
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print = true // case 3
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}
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} else {
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print = true // also case 3
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}
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if print {
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if firstout {
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b.WriteString(fmt.Sprintf("%v---outputs:---\n", indent))
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firstout = false
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}
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printPropertyTitle(b, k, maxkey, indent)
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printPropertyValue(b, newout, false, indent)
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}
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}
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}
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b.WriteString(colors.Reset)
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}
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func shouldPrintPropertyValue(v resource.PropertyValue, outs bool) bool {
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if v.IsNull() {
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// by default, don't print nulls (they just clutter up the output)
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return false
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}
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if v.IsOutput() && !outs {
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// also don't show output properties until the outs parameter tells us to.
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return false
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}
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return true
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}
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func printPropertyTitle(b *bytes.Buffer, k resource.PropertyKey, align int, indent string) {
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b.WriteString(fmt.Sprintf("%s%-"+strconv.Itoa(align)+"s: ", indent, k))
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}
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func printPropertyValue(b *bytes.Buffer, v resource.PropertyValue, planning bool, indent string) {
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if v.IsNull() {
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b.WriteString("<null>")
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} else if v.IsBool() {
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b.WriteString(fmt.Sprintf("%t", v.BoolValue()))
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} else if v.IsNumber() {
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b.WriteString(fmt.Sprintf("%v", v.NumberValue()))
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} else if v.IsString() {
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b.WriteString(fmt.Sprintf("%q", v.StringValue()))
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} else if v.IsArray() {
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arr := v.ArrayValue()
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if len(arr) == 0 {
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b.WriteString("[]")
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} else {
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b.WriteString(fmt.Sprintf("[\n"))
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for i, elem := range arr {
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newIndent := printArrayElemHeader(b, i, indent)
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printPropertyValue(b, elem, planning, newIndent)
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}
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b.WriteString(fmt.Sprintf("%s]", indent))
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}
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} else if v.IsAsset() {
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a := v.AssetValue()
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if text, has := a.GetText(); has {
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b.WriteString("asset {\n")
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// pretty print the text, line by line, with proper breaks.
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lines := strings.Split(text, "\n")
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for _, line := range lines {
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b.WriteString(fmt.Sprintf("%v \"%v\"\n", indent, line))
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}
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b.WriteString(fmt.Sprintf("%v}", indent))
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} else if path, has := a.GetPath(); has {
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b.WriteString(fmt.Sprintf("asset { file://%v }", path))
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} else {
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contract.Assert(a.IsURI())
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b.WriteString(fmt.Sprintf("asset { %v }", a.URI))
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}
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} else if v.IsArchive() {
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a := v.ArchiveValue()
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if assets, has := a.GetAssets(); has {
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b.WriteString("archive {\n")
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var names []string
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for name := range assets {
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names = append(names, name)
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}
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sort.Strings(names)
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for _, name := range names {
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b.WriteString(fmt.Sprintf("%v \"%v\": ", indent, name))
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printPropertyValue(b, resource.NewAssetProperty(assets[name]), planning, indent+" ")
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}
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b.WriteString(fmt.Sprintf("%v}", indent))
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} else if path, has := a.GetPath(); has {
|
|
b.WriteString(fmt.Sprintf("archive { file://%v }", path))
|
|
} else {
|
|
contract.Assert(a.IsURI())
|
|
b.WriteString(fmt.Sprintf("archive { %v }", a.URI))
|
|
}
|
|
} else if v.IsComputed() || v.IsOutput() {
|
|
b.WriteString(v.TypeString())
|
|
} else {
|
|
contract.Assert(v.IsObject())
|
|
obj := v.ObjectValue()
|
|
if len(obj) == 0 {
|
|
b.WriteString("{}")
|
|
} else {
|
|
b.WriteString("{\n")
|
|
printObject(b, obj, planning, indent+" ")
|
|
b.WriteString(fmt.Sprintf("%s}", indent))
|
|
}
|
|
}
|
|
b.WriteString("\n")
|
|
}
|
|
|
|
func getArrayElemHeader(b *bytes.Buffer, i int, indent string) (string, string) {
|
|
prefix := fmt.Sprintf(" %s[%d]: ", indent, i)
|
|
return prefix, fmt.Sprintf("%-"+strconv.Itoa(len(prefix))+"s", "")
|
|
}
|
|
|
|
func printArrayElemHeader(b *bytes.Buffer, i int, indent string) string {
|
|
prefix, newIndent := getArrayElemHeader(b, i, indent)
|
|
b.WriteString(prefix)
|
|
return newIndent
|
|
}
|
|
|
|
func printOldNewDiffs(b *bytes.Buffer, olds resource.PropertyMap, news resource.PropertyMap,
|
|
replaces []resource.PropertyKey, planning bool, indent string) {
|
|
// Get the full diff structure between the two, and print it (recursively).
|
|
if diff := olds.Diff(news); diff != nil {
|
|
printObjectDiff(b, *diff, replaces, false, planning, indent)
|
|
} else {
|
|
printObject(b, news, planning, indent)
|
|
}
|
|
}
|
|
|
|
func printObjectDiff(b *bytes.Buffer, diff resource.ObjectDiff,
|
|
replaces []resource.PropertyKey, causedReplace bool, planning bool, indent string) {
|
|
contract.Assert(len(indent) > 2)
|
|
|
|
// Compute the maximum with of property keys so we can justify everything.
|
|
keys := diff.Keys()
|
|
maxkey := maxKey(keys)
|
|
|
|
// If a list of what causes a resource to get replaced exist, create a handy map.
|
|
var replaceMap map[resource.PropertyKey]bool
|
|
if len(replaces) > 0 {
|
|
replaceMap = make(map[resource.PropertyKey]bool)
|
|
for _, k := range replaces {
|
|
replaceMap[k] = true
|
|
}
|
|
}
|
|
|
|
// To print an object diff, enumerate the keys in stable order, and print each property independently.
|
|
for _, k := range keys {
|
|
title := func(id string) { printPropertyTitle(b, k, maxkey, id) }
|
|
if add, isadd := diff.Adds[k]; isadd {
|
|
if shouldPrintPropertyValue(add, planning) {
|
|
b.WriteString(colors.SpecCreate)
|
|
title(addIndent(indent))
|
|
printPropertyValue(b, add, planning, addIndent(indent))
|
|
b.WriteString(colors.Reset)
|
|
}
|
|
} else if delete, isdelete := diff.Deletes[k]; isdelete {
|
|
if shouldPrintPropertyValue(delete, planning) {
|
|
b.WriteString(colors.SpecDelete)
|
|
title(deleteIndent(indent))
|
|
printPropertyValue(b, delete, planning, deleteIndent(indent))
|
|
b.WriteString(colors.Reset)
|
|
}
|
|
} else if update, isupdate := diff.Updates[k]; isupdate {
|
|
if !causedReplace && replaceMap != nil {
|
|
causedReplace = replaceMap[k]
|
|
}
|
|
printPropertyValueDiff(b, title, update, causedReplace, planning, indent)
|
|
} else if same := diff.Sames[k]; shouldPrintPropertyValue(same, planning) {
|
|
title(indent)
|
|
printPropertyValue(b, diff.Sames[k], planning, indent)
|
|
}
|
|
}
|
|
}
|
|
|
|
func printPropertyValueDiff(b *bytes.Buffer, title func(string), diff resource.ValueDiff,
|
|
causedReplace bool, planning bool, indent string) {
|
|
contract.Assert(len(indent) > 2)
|
|
|
|
if diff.Array != nil {
|
|
title(indent)
|
|
b.WriteString("[\n")
|
|
|
|
a := diff.Array
|
|
for i := 0; i < a.Len(); i++ {
|
|
_, newIndent := getArrayElemHeader(b, i, indent)
|
|
titleFunc := func(id string) { printArrayElemHeader(b, i, id) }
|
|
if add, isadd := a.Adds[i]; isadd {
|
|
b.WriteString(deploy.OpCreate.Color())
|
|
titleFunc(addIndent(indent))
|
|
printPropertyValue(b, add, planning, addIndent(newIndent))
|
|
b.WriteString(colors.Reset)
|
|
} else if delete, isdelete := a.Deletes[i]; isdelete {
|
|
b.WriteString(deploy.OpDelete.Color())
|
|
titleFunc(deleteIndent(indent))
|
|
printPropertyValue(b, delete, planning, deleteIndent(newIndent))
|
|
b.WriteString(colors.Reset)
|
|
} else if update, isupdate := a.Updates[i]; isupdate {
|
|
printPropertyValueDiff(b, title, update, causedReplace, planning, indent)
|
|
} else {
|
|
titleFunc(indent)
|
|
printPropertyValue(b, a.Sames[i], planning, newIndent)
|
|
}
|
|
}
|
|
b.WriteString(fmt.Sprintf("%s]\n", indent))
|
|
} else if diff.Object != nil {
|
|
title(indent)
|
|
b.WriteString("{\n")
|
|
printObjectDiff(b, *diff.Object, nil, causedReplace, planning, indent+" ")
|
|
b.WriteString(fmt.Sprintf("%s}\n", indent))
|
|
} else {
|
|
// If we ended up here, the two values either differ by type, or they have different primitive values. We will
|
|
// simply emit a deletion line followed by an addition line.
|
|
if shouldPrintPropertyValue(diff.Old, false) {
|
|
var color string
|
|
if causedReplace {
|
|
color = deploy.OpDelete.Color() // this property triggered replacement; color as a delete
|
|
} else {
|
|
color = deploy.OpUpdate.Color()
|
|
}
|
|
b.WriteString(color)
|
|
title(deleteIndent(indent))
|
|
printPropertyValue(b, diff.Old, planning, deleteIndent(indent))
|
|
b.WriteString(colors.Reset)
|
|
}
|
|
if shouldPrintPropertyValue(diff.New, false) {
|
|
var color string
|
|
if causedReplace {
|
|
color = deploy.OpCreate.Color() // this property triggered replacement; color as a create
|
|
} else {
|
|
color = deploy.OpUpdate.Color()
|
|
}
|
|
b.WriteString(color)
|
|
title(addIndent(indent))
|
|
printPropertyValue(b, diff.New, planning, addIndent(indent))
|
|
b.WriteString(colors.Reset)
|
|
}
|
|
}
|
|
}
|
|
|
|
func addIndent(indent string) string { return indent[:len(indent)-2] + "+ " }
|
|
func deleteIndent(indent string) string { return indent[:len(indent)-2] + "- " }
|