mirror of https://github.com/pulumi/pulumi.git
217 lines
7.5 KiB
Go
217 lines
7.5 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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"time"
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goerr "github.com/pkg/errors"
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"github.com/pulumi/pulumi/pkg/compiler/errors"
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"github.com/pulumi/pulumi/pkg/diag"
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"github.com/pulumi/pulumi/pkg/diag/colors"
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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 DeployOptions struct {
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Package string // the package we are deploying (or "" to use the default)
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Analyzers []string // an optional set of analyzers to run as part of this deployment.
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DryRun bool // true if we should just print the plan without performing it.
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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) Deploy(stack tokens.QName, events chan<- Event, opts DeployOptions) 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.deployLatest(info, deployOptions{
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Destroy: false,
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DryRun: opts.DryRun,
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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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type deployOptions struct {
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Create bool // true if we are creating resources.
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Destroy bool // true if we are destroying the stack.
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DryRun bool // true if we should just print the plan without performing it.
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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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DOT bool // true if we should print the DOT file for this plan.
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Events chan<- Event // the channel to write events from the engine to.
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Diag diag.Sink // the sink to use for diag'ing.
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}
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func (eng *Engine) deployLatest(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 opts.DryRun {
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// If a dry run, just print the plan, don't actually carry out the deployment.
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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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} else {
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// Otherwise, we will actually deploy the latest bits.
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var header bytes.Buffer
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printPrelude(&header, result, false)
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header.WriteString(fmt.Sprintf("%vPerforming changes:%v\n", colors.SpecUnimportant, colors.Reset))
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opts.Events <- stdOutEventWithColor(&header)
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// Walk the plan, reporting progress and executing the actual operations as we go.
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start := time.Now()
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actions := &deployActions{
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Ops: make(map[deploy.StepOp]int),
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Opts: opts,
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Target: result.Info.Target,
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Engine: eng,
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}
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summary, _, _, err := result.Walk(actions)
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if err != nil && summary == nil {
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// Something went wrong, and no changes were made.
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return err
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}
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contract.Assert(summary != nil)
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// Print a summary.
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var footer bytes.Buffer
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// Print out the total number of steps performed (and their kinds), the duration, and any summary info.
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if c := printChangeSummary(&footer, actions.Ops, false); c != 0 {
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footer.WriteString(fmt.Sprintf("%vUpdate duration: %v%v\n",
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colors.SpecUnimportant, time.Since(start), colors.Reset))
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}
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if actions.MaybeCorrupt {
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footer.WriteString(fmt.Sprintf(
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"%vA catastrophic error occurred; resources states may be unknown%v\n",
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colors.SpecAttention, colors.Reset))
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}
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opts.Events <- stdOutEventWithColor(&footer)
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if err != nil {
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return err
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}
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}
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}
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if !opts.Diag.Success() {
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// If any error that wasn't printed above, be sure to make it evident in the output.
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return goerr.New("One or more errors occurred during this update")
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}
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return nil
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}
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// deployActions pretty-prints the plan application process as it goes.
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type deployActions struct {
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Steps int
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Ops map[deploy.StepOp]int
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MaybeCorrupt bool
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Opts deployOptions
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Target *deploy.Target
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Engine *Engine
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}
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func (acts *deployActions) Run(step deploy.Step) (resource.Status, error) {
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// Report the beginning of the step if appropriate.
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if shouldShow(step, acts.Opts) {
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var b bytes.Buffer
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printStep(&b, step, acts.Opts.Summary, false, 0 /*indent*/)
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acts.Opts.Events <- stdOutEventWithColor(&b)
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}
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// Inform the snapshot service that we are about to perform a step.
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var mutation SnapshotMutation
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if _, ismut := step.(deploy.MutatingStep); ismut {
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m, err := acts.Engine.Snapshots.BeginMutation(acts.Target.Name)
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if err != nil {
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return resource.StatusOK, err
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}
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mutation = m
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}
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// Apply the step's changes.
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status, err := step.Apply()
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// Report the result of the step.
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stepop := step.Op()
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if err != nil {
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// Issue a true, bonafide error.
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acts.Opts.Diag.Errorf(errors.ErrorPlanApplyFailed, err)
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// Print the state of the resource; we don't issue the error, because the deploy above will do that.
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var b bytes.Buffer
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stepnum := acts.Steps + 1
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b.WriteString(fmt.Sprintf("Step #%v failed [%v]: ", stepnum, stepop))
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switch status {
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case resource.StatusOK:
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b.WriteString(colors.SpecNote)
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b.WriteString("provider successfully recovered from this failure")
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case resource.StatusUnknown:
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b.WriteString(colors.SpecAttention)
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b.WriteString("this failure was catastrophic and the provider cannot guarantee recovery")
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acts.MaybeCorrupt = true
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default:
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contract.Failf("Unrecognized resource state: %v", status)
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}
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b.WriteString(colors.Reset)
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b.WriteString("\n")
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acts.Opts.Events <- stdOutEventWithColor(&b)
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} else {
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// Increment the counters.
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if step.Logical() {
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acts.Steps++
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acts.Ops[stepop]++
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}
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// Print out any output properties that got created as a result of this operation.
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if shouldShow(step, acts.Opts) && !acts.Opts.Summary {
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var b bytes.Buffer
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printResourceOutputProperties(&b, step, 0 /*indent*/)
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acts.Opts.Events <- stdOutEventWithColor(&b)
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}
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}
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// If necessary, write out the current snapshot. Note that even if a failure has occurred, we should still have a safe checkpoint.
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// Note that any error that occurs when writing the checkpoint trumps the error reported above.
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if mutation != nil {
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if endErr := mutation.End(step.Iterator().Snap()); endErr != nil {
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return status, endErr
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}
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}
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return status, err
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}
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