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88cb4aeea3
We previously had all of the types and helpers for all kinds of backends together in package backend. That kept things relatively simple, but it also meant that the majority of backends that only deal with remote state storage ended up still indirectly depending on the entire Terraform modules runtime, configuration loader, etc, etc, which brings into scope a bunch of external dependencies that the remote state backends don't really need. Since backends that support operations are a rare exception, we'll move the types and helpers for those into a separate package "backendrun", and then the main package backend can have a much more modest set of types and, more importantly, a modest set of dependencies on other packages in this codebase. This is part of an ongoing effort to reduce the exposure of Terraform Core and CLI code to the remote backends and vice-versa, so that in the long run we can more often treat them as separate for dependency maintenance purposes.
75 lines
2.8 KiB
Go
75 lines
2.8 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package cloud
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import (
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"github.com/hashicorp/hcl/v2/hclwrite"
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"github.com/hashicorp/terraform/internal/backend/backendrun"
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"github.com/hashicorp/terraform/internal/configs"
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"github.com/hashicorp/terraform/internal/terraform"
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"github.com/hashicorp/terraform/internal/tfdiags"
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)
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func allowedSourceType(source terraform.ValueSourceType) bool {
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return source == terraform.ValueFromNamedFile || source == terraform.ValueFromCLIArg || source == terraform.ValueFromEnvVar
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}
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// ParseCloudRunVariables accepts a mapping of unparsed values and a mapping of variable
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// declarations and returns a name/value variable map appropriate for an API run context,
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// that is, containing variables only sourced from non-file inputs like CLI args
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// and environment variables. However, all variable parsing diagnostics are returned
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// in order to allow callers to short circuit cloud runs that contain variable
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// declaration or parsing errors. The only exception is that missing required values are not
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// considered errors because they may be defined within the cloud workspace.
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func ParseCloudRunVariables(vv map[string]backendrun.UnparsedVariableValue, decls map[string]*configs.Variable) (map[string]string, tfdiags.Diagnostics) {
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declared, diags := backendrun.ParseDeclaredVariableValues(vv, decls)
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_, undedeclaredDiags := backendrun.ParseUndeclaredVariableValues(vv, decls)
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diags = diags.Append(undedeclaredDiags)
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ret := make(map[string]string, len(declared))
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// Even if there are parsing or declaration errors, populate the return map with the
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// variables that could be used for cloud runs
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for name, v := range declared {
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if !allowedSourceType(v.SourceType) {
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continue
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}
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// RunVariables are always expressed as HCL strings
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tokens := hclwrite.TokensForValue(v.Value)
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ret[name] = string(tokens.Bytes())
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}
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return ret, diags
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}
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// ParseCloudRunTestVariables is similar to ParseCloudVariables, except it does
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// not make any assumptions about variables needed by the configuration.
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//
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// Within a test run execution, variables can be defined inside test files and
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// inside child modules as well as the main configuration and it is a lot of
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// effort to track down exactly where variable definitions exist. We just accept
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// all values.
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func ParseCloudRunTestVariables(globals map[string]backendrun.UnparsedVariableValue) (map[string]string, tfdiags.Diagnostics) {
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var diags tfdiags.Diagnostics
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ret := make(map[string]string, len(globals))
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for name, v := range globals {
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variable, variableDiags := v.ParseVariableValue(configs.VariableParseLiteral)
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diags = diags.Append(variableDiags)
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if variableDiags.HasErrors() {
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continue
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}
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if !allowedSourceType(variable.SourceType) {
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continue
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}
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tokens := hclwrite.TokensForValue(variable.Value)
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ret[name] = string(tokens.Bytes())
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}
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return ret, diags
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}
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