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479c6b2466
The "config" package is no longer used and will be removed as part of the 0.12 release cleanup. Since configschema is part of the "new world" of configuration modelling, it makes more sense for it to live as a subdirectory of the newer "configs" package.
66 lines
2.8 KiB
Go
66 lines
2.8 KiB
Go
package terraform
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import (
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"github.com/hashicorp/terraform/configs/configschema"
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)
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// ResourceProvisioner is an interface that must be implemented by any
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// resource provisioner: the thing that initializes resources in
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// a Terraform configuration.
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type ResourceProvisioner interface {
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// GetConfigSchema returns the schema for the provisioner type's main
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// configuration block. This is called prior to Validate to enable some
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// basic structural validation to be performed automatically and to allow
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// the configuration to be properly extracted from potentially-ambiguous
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// configuration file formats.
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GetConfigSchema() (*configschema.Block, error)
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// Validate is called once at the beginning with the raw
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// configuration (no interpolation done) and can return a list of warnings
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// and/or errors.
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//
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// This is called once per resource.
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//
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// This should not assume any of the values in the resource configuration
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// are valid since it is possible they have to be interpolated still.
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// The primary use case of this call is to check that the required keys
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// are set and that the general structure is correct.
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Validate(*ResourceConfig) ([]string, []error)
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// Apply runs the provisioner on a specific resource and returns the new
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// resource state along with an error. Instead of a diff, the ResourceConfig
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// is provided since provisioners only run after a resource has been
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// newly created.
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Apply(UIOutput, *InstanceState, *ResourceConfig) error
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// Stop is called when the provisioner should halt any in-flight actions.
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//
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// This can be used to make a nicer Ctrl-C experience for Terraform.
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// Even if this isn't implemented to do anything (just returns nil),
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// Terraform will still cleanly stop after the currently executing
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// graph node is complete. However, this API can be used to make more
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// efficient halts.
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//
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// Stop doesn't have to and shouldn't block waiting for in-flight actions
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// to complete. It should take any action it wants and return immediately
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// acknowledging it has received the stop request. Terraform core will
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// automatically not make any further API calls to the provider soon
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// after Stop is called (technically exactly once the currently executing
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// graph nodes are complete).
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//
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// The error returned, if non-nil, is assumed to mean that signaling the
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// stop somehow failed and that the user should expect potentially waiting
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// a longer period of time.
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Stop() error
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}
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// ResourceProvisionerCloser is an interface that provisioners that can close
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// connections that aren't needed anymore must implement.
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type ResourceProvisionerCloser interface {
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Close() error
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}
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// ResourceProvisionerFactory is a function type that creates a new instance
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// of a resource provisioner.
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type ResourceProvisionerFactory func() (ResourceProvisioner, error)
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