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95 lines
3.7 KiB
Go
95 lines
3.7 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package backend
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import (
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"github.com/mitchellh/cli"
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"github.com/mitchellh/colorstring"
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"github.com/hashicorp/terraform/internal/terminal"
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"github.com/hashicorp/terraform/internal/terraform"
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)
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// CLI is an optional interface that can be implemented to be initialized
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// with information from the Terraform CLI. If this is implemented, this
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// initialization function will be called with data to help interact better
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// with a CLI.
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//
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// This interface was created to improve backend interaction with the
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// official Terraform CLI while making it optional for API users to have
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// to provide full CLI interaction to every backend.
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//
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// If you're implementing a Backend, it is acceptable to require CLI
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// initialization. In this case, your backend should be coded to error
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// on other methods (such as State, Operation) if CLI initialization was not
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// done with all required fields.
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type CLI interface {
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Backend
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// CLIInit is called once with options. The options passed to this
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// function may not be modified after calling this since they can be
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// read/written at any time by the Backend implementation.
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//
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// This may be called before or after Configure is called, so if settings
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// here affect configurable settings, care should be taken to handle
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// whether they should be overwritten or not.
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CLIInit(*CLIOpts) error
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}
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// CLIOpts are the options passed into CLIInit for the CLI interface.
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//
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// These options represent the functionality the CLI exposes and often
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// maps to meta-flags available on every CLI (such as -input).
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//
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// When implementing a backend, it isn't expected that every option applies.
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// Your backend should be documented clearly to explain to end users what
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// options have an affect and what won't. In some cases, it may even make sense
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// to error in your backend when an option is set so that users don't make
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// a critically incorrect assumption about behavior.
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type CLIOpts struct {
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// CLI and Colorize control the CLI output. If CLI is nil then no CLI
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// output will be done. If CLIColor is nil then no coloring will be done.
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CLI cli.Ui
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CLIColor *colorstring.Colorize
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// Streams describes the low-level streams for Stdout, Stderr and Stdin,
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// including some metadata about whether they are terminals. Most output
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// should go via the object in field CLI above, but Streams can be useful
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// for tailoring the output to fit the attached terminal, for example.
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Streams *terminal.Streams
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// StatePath is the local path where state is read from.
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//
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// StateOutPath is the local path where the state will be written.
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// If this is empty, it will default to StatePath.
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//
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// StateBackupPath is the local path where a backup file will be written.
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// If this is empty, no backup will be taken.
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StatePath string
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StateOutPath string
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StateBackupPath string
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// ContextOpts are the base context options to set when initializing a
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// Terraform context. Many of these will be overridden or merged by
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// Operation. See Operation for more details.
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ContextOpts *terraform.ContextOpts
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// Input will ask for necessary input prior to performing any operations.
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//
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// Validation will perform validation prior to running an operation. The
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// variable naming doesn't match the style of others since we have a func
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// Validate.
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Input bool
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Validation bool
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// RunningInAutomation indicates that commands are being run by an
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// automated system rather than directly at a command prompt.
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//
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// This is a hint not to produce messages that expect that a user can
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// run a follow-up command, perhaps because Terraform is running in
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// some sort of workflow automation tool that abstracts away the
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// exact commands that are being run.
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RunningInAutomation bool
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}
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