dc8c302d33
The prior change was incorrectly handling snapshotting of replacement operations. Further, in hindsight, the older model of having steps manage their interaction with the snapshot marking was clearer, so I've essentially brought that back, merging it with the other changes.
121 lines
3.9 KiB
Go
121 lines
3.9 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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"github.com/pkg/errors"
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"github.com/pulumi/pulumi/pkg/diag"
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"github.com/pulumi/pulumi/pkg/resource"
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"github.com/pulumi/pulumi/pkg/resource/deploy"
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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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)
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type PreviewOptions struct {
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Package string // the package to compute the preview for
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Analyzers []string // an optional set of analyzers to run as part of this deployment.
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Parallel int // the degree of parallelism for resource operations (<=1 for serial).
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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) Preview(stack tokens.QName, events chan<- Event, opts PreviewOptions) error {
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contract.Require(stack != tokens.QName(""), "stack")
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contract.Require(events != nil, "events")
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defer func() { events <- cancelEvent() }()
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info, err := eng.planContextFromStack(stack, opts.Package)
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if err != nil {
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return err
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}
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defer info.Close()
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return eng.previewLatest(info, deployOptions{
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Destroy: false,
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DryRun: true,
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Analyzers: opts.Analyzers,
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Parallel: opts.Parallel,
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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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Events: events,
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Diag: newEventSink(events, diag.FormatOptions{
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Colors: true,
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}),
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})
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}
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func (eng *Engine) previewLatest(info *planContext, opts deployOptions) error {
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result, err := eng.plan(info, opts)
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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); err != nil {
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return err
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}
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}
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if !opts.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 preview")
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}
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return nil
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}
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type previewActions struct {
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Summary bytes.Buffer
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Ops map[deploy.StepOp]int
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Opts deployOptions
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Seen map[resource.URN]deploy.Step
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Shown map[resource.URN]bool
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}
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func newPreviewActions(opts deployOptions) *previewActions {
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return &previewActions{
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Ops: make(map[deploy.StepOp]int),
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Opts: opts,
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Seen: make(map[resource.URN]deploy.Step),
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Shown: make(map[resource.URN]bool),
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}
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}
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func (acts *previewActions) OnResourceStepPre(step deploy.Step) (interface{}, error) {
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// Print this step information (resource and all its properties).
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if shouldShow(acts.Seen, step, acts.Opts) {
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printStep(&acts.Summary, step,
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acts.Seen, acts.Shown, acts.Opts.Summary, acts.Opts.Detailed, true, 0 /*indent*/)
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}
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return nil, nil
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}
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func (acts *previewActions) OnResourceStepPost(ctx interface{},
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step deploy.Step, status resource.Status, err error) error {
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// We let `printPlan` handle error reporting for now.
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if err == nil {
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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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acts.Ops[step.Op()]++
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}
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// Also show outputs here, since there might be some from the initial registration.
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_ = acts.OnResourceOutputs(step)
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}
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return nil
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}
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func (acts *previewActions) OnResourceOutputs(step deploy.Step) error {
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// Print this step's output properties.
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if shouldShow(acts.Seen, step, acts.Opts) && !acts.Opts.Summary {
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printResourceOutputProperties(&acts.Summary, step, acts.Seen, acts.Shown, 0 /*indent*/)
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}
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return nil
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}
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