Downlevel versions of the Pulumi Node SDK assumed that a parallelism level of zero implied serial execution, which current CLIs use to signal unbounded parallelism. This commit works around the downlevel issue by using math.MaxInt32 to signal unbounded parallelism.
472 lines
14 KiB
Go
472 lines
14 KiB
Go
// Copyright 2016-2018, Pulumi Corporation.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cmd
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import (
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"context"
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"io/ioutil"
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"math"
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"os"
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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/pkg/errors"
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"github.com/spf13/cobra"
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"github.com/pulumi/pulumi/pkg/backend"
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"github.com/pulumi/pulumi/pkg/backend/display"
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"github.com/pulumi/pulumi/pkg/engine"
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"github.com/pulumi/pulumi/pkg/resource/config"
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"github.com/pulumi/pulumi/pkg/resource/deploy"
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"github.com/pulumi/pulumi/pkg/resource/stack"
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"github.com/pulumi/pulumi/pkg/util/cmdutil"
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"github.com/pulumi/pulumi/pkg/workspace"
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)
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const (
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defaultParallel = math.MaxInt32
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)
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// nolint: vetshadow, intentionally disabling here for cleaner err declaration/assignment.
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func newUpCmd() *cobra.Command {
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var debug bool
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var expectNop bool
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var message string
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var stack string
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var configArray []string
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// Flags for engine.UpdateOptions.
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var analyzers []string
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var diffDisplay bool
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var parallel int
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var refresh bool
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var showConfig bool
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var showReplacementSteps bool
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var showSames bool
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var skipPreview bool
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var suppressOutputs bool
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var yes bool
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// up implementation used when the source of the Pulumi program is in the current working directory.
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upWorkingDirectory := func(opts backend.UpdateOptions) error {
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s, err := requireStack(stack, true, opts.Display, true /*setCurrent*/)
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if err != nil {
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return err
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}
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// Save any config values passed via flags.
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if len(configArray) > 0 {
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commandLineConfig, err := parseConfig(configArray)
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if err != nil {
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return err
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}
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if err = saveConfig(s.Ref().Name(), commandLineConfig); err != nil {
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return errors.Wrap(err, "saving config")
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}
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}
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proj, root, err := readProject()
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if err != nil {
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return err
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}
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m, err := getUpdateMetadata(message, root)
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if err != nil {
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return errors.Wrap(err, "gathering environment metadata")
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}
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opts.Engine = engine.UpdateOptions{
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Analyzers: analyzers,
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Parallel: parallel,
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Debug: debug,
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Refresh: refresh,
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}
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changes, err := s.Update(commandContext(), backend.UpdateOperation{
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Proj: proj,
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Root: root,
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M: m,
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Opts: opts,
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Scopes: cancellationScopes,
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})
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switch {
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case err == context.Canceled:
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return errors.New("update cancelled")
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case err != nil:
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return PrintEngineError(err)
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case expectNop && changes != nil && changes.HasChanges():
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return errors.New("error: no changes were expected but changes occurred")
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default:
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return nil
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}
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}
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// up implementation used when the source of the Pulumi program is a URL.
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upURL := func(url string, opts backend.UpdateOptions) error {
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if !workspace.IsTemplateURL(url) {
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return errors.Errorf("%s is not a valid URL", url)
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}
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// Retrieve the template repo.
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repo, err := workspace.RetrieveTemplates(url, false)
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if err != nil {
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return err
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}
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defer func() {
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contract.IgnoreError(repo.Delete())
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}()
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// List the templates from the repo.
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templates, err := repo.Templates()
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if err != nil {
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return err
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}
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// Make sure only a single template is found.
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// Alternatively, we could consider prompting to choose one instead of failing.
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if len(templates) != 1 {
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return errors.Errorf("more than one application found at %s", url)
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}
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template := templates[0]
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// Create temp directory for the "virtual workspace".
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temp, err := ioutil.TempDir("", "pulumi-up-")
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if err != nil {
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return err
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}
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defer func() {
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contract.IgnoreError(os.RemoveAll(temp))
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}()
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// Change the working directory to the "virtual workspace" directory.
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if err = os.Chdir(temp); err != nil {
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return errors.Wrap(err, "changing the working directory")
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}
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// If a stack was specified via --stack, see if it already exists.
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var name string
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var description string
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var s backend.Stack
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if stack != "" {
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if s, name, description, err = getStack(stack, opts.Display); err != nil {
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return err
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}
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}
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// Prompt for the project name, if we don't already have one from an existing stack.
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if name == "" {
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defaultValue := workspace.ValueOrSanitizedDefaultProjectName(name, template.ProjectName, template.Name)
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name, err = promptForValue(yes, "project name", defaultValue, false, workspace.IsValidProjectName, opts.Display)
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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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// Prompt for the project description, if we don't already have one from an existing stack.
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if description == "" {
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defaultValue := workspace.ValueOrDefaultProjectDescription(
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description, template.ProjectDescription, template.Description)
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description, err = promptForValue(yes, "project description", defaultValue, false, nil, opts.Display)
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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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// Copy the template files from the repo to the temporary "virtual workspace" directory.
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if err = template.CopyTemplateFiles(temp, true, name, description); err != nil {
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return err
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}
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// Load the project, update the name & description, and save it.
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proj, root, err := readProject()
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if err != nil {
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return err
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}
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proj.Name = tokens.PackageName(name)
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proj.Description = &description
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if err = workspace.SaveProject(proj); err != nil {
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return errors.Wrap(err, "saving project")
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}
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// Create the stack, if needed.
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if s == nil {
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if s, err = promptAndCreateStack(stack, name, false /*setCurrent*/, yes, opts.Display); err != nil {
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return err
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}
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// The backend will print "Created stack '<stack>'." on success.
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}
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// Prompt for config values (if needed) and save.
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if err = handleConfig(s, url, template, configArray, yes, opts.Display); err != nil {
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return err
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}
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// Install dependencies.
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if err = installDependencies("Installing dependencies..."); err != nil {
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return err
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}
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m, err := getUpdateMetadata(message, root)
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if err != nil {
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return errors.Wrap(err, "gathering environment metadata")
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}
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opts.Engine = engine.UpdateOptions{
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Analyzers: analyzers,
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Parallel: parallel,
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Debug: debug,
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Refresh: refresh,
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}
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// TODO for the URL case:
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// - suppress preview display/prompt unless error.
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// - attempt `destroy` on any update errors.
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// - show template.Quickstart?
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changes, err := s.Update(commandContext(), backend.UpdateOperation{
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Proj: proj,
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Root: root,
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M: m,
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Opts: opts,
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Scopes: cancellationScopes,
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})
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switch {
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case err == context.Canceled:
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return errors.New("update cancelled")
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case err != nil:
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return PrintEngineError(err)
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case expectNop && changes != nil && changes.HasChanges():
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return errors.New("error: no changes were expected but changes occurred")
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default:
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return nil
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}
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}
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var cmd = &cobra.Command{
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Use: "up [url]",
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Aliases: []string{"update"},
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SuggestFor: []string{"apply", "deploy", "push"},
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Short: "Create or update the resources in a stack",
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Long: "Create or update the resources in a stack.\n" +
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"\n" +
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"This command creates or updates resources in a stack. The new desired goal state for the target stack\n" +
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"is computed by running the current Pulumi program and observing all resource allocations to produce a\n" +
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"resource graph. This goal state is then compared against the existing state to determine what create,\n" +
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"read, update, and/or delete operations must take place to achieve the desired goal state, in the most\n" +
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"minimally disruptive way. This command records a full transactional snapshot of the stack's new state\n" +
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"afterwards so that the stack may be updated incrementally again later on.\n" +
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"\n" +
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"The program to run is loaded from the project in the current directory by default. Use the `-C` or\n" +
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"`--cwd` flag to use a different directory.",
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Args: cmdutil.MaximumNArgs(1),
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Run: cmdutil.RunFunc(func(cmd *cobra.Command, args []string) error {
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interactive := cmdutil.Interactive()
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if !interactive {
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yes = true // auto-approve changes, since we cannot prompt.
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}
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opts, err := updateFlagsToOptions(interactive, skipPreview, yes)
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if err != nil {
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return err
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}
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opts.Display = display.Options{
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Color: cmdutil.GetGlobalColorization(),
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ShowConfig: showConfig,
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ShowReplacementSteps: showReplacementSteps,
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ShowSameResources: showSames,
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SuppressOutputs: suppressOutputs,
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IsInteractive: interactive,
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DiffDisplay: diffDisplay,
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Debug: debug,
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}
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if len(args) > 0 {
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return upURL(args[0], opts)
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}
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return upWorkingDirectory(opts)
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}),
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}
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cmd.PersistentFlags().BoolVarP(
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&debug, "debug", "d", false,
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"Print detailed debugging output during resource operations")
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cmd.PersistentFlags().BoolVar(
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&expectNop, "expect-no-changes", false,
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"Return an error if any changes occur during this update")
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cmd.PersistentFlags().StringVarP(
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&stack, "stack", "s", "",
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"The name of the stack to operate on. Defaults to the current stack")
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cmd.PersistentFlags().StringArrayVarP(
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&configArray, "config", "c", []string{},
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"Config to use during the update")
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cmd.PersistentFlags().StringVarP(
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&message, "message", "m", "",
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"Optional message to associate with the update operation")
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// Flags for engine.UpdateOptions.
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cmd.PersistentFlags().StringSliceVar(
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&analyzers, "analyzer", []string{},
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"Run one or more analyzers as part of this update")
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cmd.PersistentFlags().BoolVar(
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&diffDisplay, "diff", false,
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"Display operation as a rich diff showing the overall change")
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cmd.PersistentFlags().IntVarP(
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¶llel, "parallel", "p", defaultParallel,
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"Allow P resource operations to run in parallel at once (1 for no parallelism). Defaults to unbounded.")
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cmd.PersistentFlags().BoolVarP(
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&refresh, "refresh", "r", false,
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"Refresh the state of the stack's resources before this update")
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cmd.PersistentFlags().BoolVar(
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&showConfig, "show-config", false,
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"Show configuration keys and variables")
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cmd.PersistentFlags().BoolVar(
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&showReplacementSteps, "show-replacement-steps", false,
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"Show detailed resource replacement creates and deletes instead of a single step")
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cmd.PersistentFlags().BoolVar(
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&showSames, "show-sames", false,
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"Show resources that don't need be updated because they haven't changed, alongside those that do")
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cmd.PersistentFlags().BoolVar(
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&skipPreview, "skip-preview", false,
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"Do not perform a preview before performing the update")
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cmd.PersistentFlags().BoolVar(
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&suppressOutputs, "suppress-outputs", false,
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"Suppress display of stack outputs (in case they contain sensitive values)")
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cmd.PersistentFlags().BoolVarP(
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&yes, "yes", "y", false,
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"Automatically approve and perform the update after previewing it")
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return cmd
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}
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// handleConfig handles prompting for config values (as needed) and saving config.
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func handleConfig(
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s backend.Stack,
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templateNameOrURL string,
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template workspace.Template,
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configArray []string,
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yes bool,
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opts display.Options) error {
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// Get the existing config. stackConfig will be nil if there wasn't a previous deployment.
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stackConfig, err := backend.GetLatestConfiguration(commandContext(), s)
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if err != nil && err != backend.ErrNoPreviousDeployment {
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return err
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}
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// Get the existing snapshot.
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snap, err := s.Snapshot(commandContext())
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if err != nil {
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return err
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}
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// Handle config.
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// If this is an initial preconfigured empty stack (i.e. configured in the Pulumi Console),
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// use its config without prompting.
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// Otherwise, use the values specified on the command line and prompt for new values.
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// If the stack already existed and had previous config, those values will be used as the defaults.
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var c config.Map
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if isPreconfiguredEmptyStack(templateNameOrURL, template.Config, stackConfig, snap) {
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c = stackConfig
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// TODO[pulumi/pulumi#1894] consider warning if templateNameOrURL is different from
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// the stack's `pulumi:template` config value.
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} else {
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// Get config values passed on the command line.
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commandLineConfig, parseErr := parseConfig(configArray)
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if parseErr != nil {
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return parseErr
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}
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// Prompt for config as needed.
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c, err = promptForConfig(s, template.Config, commandLineConfig, stackConfig, yes, opts)
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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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// Save the config.
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if c != nil {
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if err = saveConfig(s.Ref().Name(), c); err != nil {
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return errors.Wrap(err, "saving config")
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}
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}
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return nil
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}
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var (
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templateKey = config.MustMakeKey("pulumi", "template")
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)
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// isPreconfiguredEmptyStack returns true if the url matches the value of `pulumi:template` in stackConfig,
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// the stackConfig values satisfy the config requirements of templateConfig, and the snapshot is empty.
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// This is the state of an initial preconfigured empty stack (i.e. a stack that's been created and configured
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// in the Pulumi Console).
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func isPreconfiguredEmptyStack(
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url string,
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templateConfig map[string]workspace.ProjectTemplateConfigValue,
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stackConfig config.Map,
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snap *deploy.Snapshot) bool {
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// Does stackConfig have a `pulumi:template` value and does it match url?
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if stackConfig == nil {
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return false
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}
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templateURLValue, hasTemplateKey := stackConfig[templateKey]
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if !hasTemplateKey {
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return false
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}
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templateURL, err := templateURLValue.Value(nil)
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if err != nil {
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contract.IgnoreError(err)
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return false
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}
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if templateURL != url {
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return false
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}
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// Does the snapshot only contain a single root resource?
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if len(snap.Resources) != 1 {
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return false
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}
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stackResource, _ := stack.GetRootStackResource(snap)
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if stackResource == nil {
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return false
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}
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// Can stackConfig satisfy the config requirements of templateConfig?
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for templateKey, templateVal := range templateConfig {
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parsedTemplateKey, parseErr := parseConfigKey(templateKey)
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if parseErr != nil {
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contract.IgnoreError(parseErr)
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return false
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}
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stackVal, ok := stackConfig[parsedTemplateKey]
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if !ok {
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return false
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}
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if templateVal.Secret != stackVal.Secure() {
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return false
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}
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}
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return true
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}
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