83 lines
2.5 KiB
Go
83 lines
2.5 KiB
Go
package configs
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import (
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version "github.com/hashicorp/go-version"
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"github.com/hashicorp/hcl/v2"
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"github.com/hashicorp/terraform/addrs"
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)
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// RequiredProvider represents a declaration of a dependency on a particular
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// provider version without actually configuring that provider. This is used in
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// child modules that expect a provider to be passed in from their parent.
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type RequiredProvider struct {
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Name string
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Source string // TODO
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Requirement VersionConstraint
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}
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// ProviderRequirements represents merged provider version constraints.
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// VersionConstraints come from terraform.require_providers blocks and provider
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// blocks.
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type ProviderRequirements struct {
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Type addrs.Provider
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VersionConstraints []VersionConstraint
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}
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func decodeRequiredProvidersBlock(block *hcl.Block) ([]*RequiredProvider, hcl.Diagnostics) {
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attrs, diags := block.Body.JustAttributes()
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var reqs []*RequiredProvider
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for name, attr := range attrs {
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expr, err := attr.Expr.Value(nil)
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if err != nil {
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diags = append(diags, err...)
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}
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switch {
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case expr.Type().IsPrimitiveType():
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vc, reqDiags := decodeVersionConstraint(attr)
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diags = append(diags, reqDiags...)
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reqs = append(reqs, &RequiredProvider{
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Name: name,
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Requirement: vc,
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})
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case expr.Type().IsObjectType():
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ret := &RequiredProvider{Name: name}
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if expr.Type().HasAttribute("version") {
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vc := VersionConstraint{
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DeclRange: attr.Range,
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}
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constraintStr := expr.GetAttr("version").AsString()
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constraints, err := version.NewConstraint(constraintStr)
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if err != nil {
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// NewConstraint doesn't return user-friendly errors, so we'll just
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// ignore the provided error and produce our own generic one.
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diags = append(diags, &hcl.Diagnostic{
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Severity: hcl.DiagError,
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Summary: "Invalid version constraint",
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Detail: "This string does not use correct version constraint syntax.",
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Subject: attr.Expr.Range().Ptr(),
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})
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} else {
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vc.Required = constraints
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ret.Requirement = vc
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}
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}
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if expr.Type().HasAttribute("source") {
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ret.Source = expr.GetAttr("source").AsString()
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}
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reqs = append(reqs, ret)
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default:
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// should not happen
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diags = append(diags, &hcl.Diagnostic{
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Severity: hcl.DiagError,
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Summary: "Invalid provider_requirements syntax",
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Detail: "provider_requirements entries must be strings or objects.",
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Subject: attr.Expr.Range().Ptr(),
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})
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reqs = append(reqs, &RequiredProvider{Name: name})
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return reqs, diags
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}
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}
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return reqs, diags
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}
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