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118 lines
3.5 KiB
Go
118 lines
3.5 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package addrs
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import (
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"fmt"
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)
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// CheckRule is the address of a check rule within a checkable object.
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//
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// This represents the check rule globally within a configuration, and is used
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// during graph evaluation to identify a condition result object to update with
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// the result of check rule evaluation.
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//
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// The check address is not distinct from resource traversals, and check rule
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// values are not intended to be available to the language, so the address is
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// not Referenceable.
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//
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// Note also that the check address is only relevant within the scope of a run,
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// as reordering check blocks between runs will result in their addresses
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// changing. CheckRule is therefore for internal use only and should not be
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// exposed in durable artifacts such as state snapshots.
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type CheckRule struct {
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Container Checkable
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Type CheckRuleType
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Index int
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}
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func NewCheckRule(container Checkable, typ CheckRuleType, index int) CheckRule {
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return CheckRule{
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Container: container,
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Type: typ,
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Index: index,
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}
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}
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func (c CheckRule) String() string {
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container := c.Container.String()
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switch c.Type {
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case ResourcePrecondition:
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return fmt.Sprintf("%s.precondition[%d]", container, c.Index)
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case ResourcePostcondition:
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return fmt.Sprintf("%s.postcondition[%d]", container, c.Index)
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case OutputPrecondition:
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return fmt.Sprintf("%s.precondition[%d]", container, c.Index)
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case CheckDataResource:
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return fmt.Sprintf("%s.data[%d]", container, c.Index)
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case CheckAssertion:
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return fmt.Sprintf("%s.assert[%d]", container, c.Index)
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case InputValidation:
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return fmt.Sprintf("%s.validation[%d]", container, c.Index)
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default:
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// This should not happen
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return fmt.Sprintf("%s.condition[%d]", container, c.Index)
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}
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}
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func (c CheckRule) UniqueKey() UniqueKey {
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return checkRuleKey{
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ContainerKey: c.Container.UniqueKey(),
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Type: c.Type,
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Index: c.Index,
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}
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}
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type checkRuleKey struct {
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ContainerKey UniqueKey
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Type CheckRuleType
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Index int
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}
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func (k checkRuleKey) uniqueKeySigil() {}
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// CheckRuleType describes a category of check. We use this only to establish
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// uniqueness for Check values, and do not expose this concept of "check types"
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// (which is subject to change in future) in any durable artifacts such as
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// state snapshots.
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//
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// (See [CheckableKind] for an enumeration that we _do_ use externally, to
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// describe the type of object being checked rather than the type of the check
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// itself.)
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type CheckRuleType int
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//go:generate go run golang.org/x/tools/cmd/stringer -type=CheckRuleType check_rule.go
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const (
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InvalidCondition CheckRuleType = 0
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ResourcePrecondition CheckRuleType = 1
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ResourcePostcondition CheckRuleType = 2
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OutputPrecondition CheckRuleType = 3
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CheckDataResource CheckRuleType = 4
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CheckAssertion CheckRuleType = 5
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InputValidation CheckRuleType = 6
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)
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// Description returns a human-readable description of the check type. This is
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// presented in the user interface through a diagnostic summary.
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func (c CheckRuleType) Description() string {
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switch c {
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case ResourcePrecondition:
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return "Resource precondition"
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case ResourcePostcondition:
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return "Resource postcondition"
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case OutputPrecondition:
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return "Module output value precondition"
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case CheckDataResource:
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return "Check block data resource"
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case CheckAssertion:
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return "Check block assertion"
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case InputValidation:
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return "Input variable validation"
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default:
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// This should not happen
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return "Condition"
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}
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}
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