87 lines
2.9 KiB
Go
87 lines
2.9 KiB
Go
// Copyright 2016-2017, Pulumi Corporation. All rights reserved.
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package cmd
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import (
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"github.com/spf13/cobra"
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"github.com/pulumi/pulumi/pkg/engine"
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"github.com/pulumi/pulumi/pkg/util/cmdutil"
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)
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func newPreviewCmd() *cobra.Command {
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var analyzers []string
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var debug bool
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var env string
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var parallel int
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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 summary bool
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var cmd = &cobra.Command{
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Use: "preview",
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Short: "Show a preview of updates to an environment's resources",
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Long: "Show a preview of updates an environment's resources\n" +
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"\n" +
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"This command displays a preview of the updates to an existing environment whose state is\n" +
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"represented by an existing snapshot file. The new desired state is computed by compiling\n" +
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"and evaluating an executable package, and extracting all resource allocations from its\n" +
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"resulting object graph. These allocations are then compared against the existing state to\n" +
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"determine what operations must take place to achieve the desired state. No changes to the\n" +
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"environment will actually take place.\n" +
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"\n" +
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"The package to execute is loaded from the current directory. Use the `-C` or `--cwd` flag to\n" +
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"use a different directory.",
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Run: cmdutil.RunFunc(func(cmd *cobra.Command, args []string) error {
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envName, err := explicitOrCurrent(env)
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if err != nil {
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return err
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}
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events := make(chan engine.Event)
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done := make(chan bool)
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go displayEvents(events, done, debug)
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err = lumiEngine.Preview(envName, events, engine.PreviewOptions{
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Analyzers: analyzers,
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Parallel: parallel,
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ShowConfig: showConfig,
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ShowReplacementSteps: showReplacementSteps,
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ShowSames: showSames,
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Summary: summary,
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})
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<-done
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return err
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}),
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}
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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 preview")
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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().StringVarP(
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&env, "env", "e", "",
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"Choose an environment other than the currently selected one")
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cmd.PersistentFlags().IntVarP(
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¶llel, "parallel", "p", 0,
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"Allow P resource operations to run in parallel at once (<=1 for no parallelism)")
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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 needn't be updated because they haven't changed, alongside those that do")
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cmd.PersistentFlags().BoolVarP(
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&summary, "summary", "s", false,
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"Only display summarization of resources and operations")
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return cmd
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}
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