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c937c06a03
Due to how deeply the configuration types go into Terraform Core, there isn't a great way to switch out to HCL2 gradually. As a consequence, this huge commit gets us from the old state to a _compilable_ new state, but does not yet attempt to fix any tests and has a number of known missing parts and bugs. We will continue to iterate on this in forthcoming commits, heading back towards passing tests and making Terraform fully-functional again. The three main goals here are: - Use the configuration models from the "configs" package instead of the older models in the "config" package, which is now deprecated and preserved only to help us write our migration tool. - Do expression inspection and evaluation using the functionality of the new "lang" package, instead of the Interpolator type and related functionality in the main "terraform" package. - Represent addresses of various objects using types in the addrs package, rather than hand-constructed strings. This is not critical to support the above, but was a big help during the implementation of these other points since it made it much more explicit what kind of address is expected in each context. Since our new packages are built to accommodate some future planned features that are not yet implemented (e.g. the "for_each" argument on resources, "count"/"for_each" on modules), and since there's still a fair amount of functionality still using old-style APIs, there is a moderate amount of shimming here to connect new assumptions with old, hopefully in a way that makes it easier to find and eliminate these shims later. I apologize in advance to the person who inevitably just found this huge commit while spelunking through the commit history.
63 lines
2.1 KiB
Go
63 lines
2.1 KiB
Go
package terraform
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import (
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"fmt"
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"github.com/hashicorp/hcl2/hcl"
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"github.com/hashicorp/terraform/tfdiags"
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"github.com/hashicorp/terraform/configs"
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tfversion "github.com/hashicorp/terraform/version"
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)
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// CheckCoreVersionRequirements visits each of the modules in the given
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// configuration tree and verifies that any given Core version constraints
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// match with the version of Terraform Core that is being used.
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//
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// The returned diagnostics will contain errors if any constraints do not match.
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// The returned diagnostics might also return warnings, which should be
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// displayed to the user.
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func CheckCoreVersionRequirements(config *configs.Config) tfdiags.Diagnostics {
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if config == nil {
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return nil
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}
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var diags tfdiags.Diagnostics
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module := config.Module
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for _, constraint := range module.CoreVersionConstraints {
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if !constraint.Required.Check(tfversion.SemVer) {
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switch {
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case len(config.Path) == 0:
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diags = diags.Append(&hcl.Diagnostic{
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Severity: hcl.DiagError,
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Summary: "Unsupported Terraform Core version",
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Detail: fmt.Sprintf(
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"This configuration does not support Terraform version %s. To proceed, either choose another supported Terraform version or update this version constraint. Version constraints are normally set for good reason, so updating the constraint may lead to other errors or unexpected behavior.",
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tfversion.String(),
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),
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Subject: &constraint.DeclRange,
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})
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default:
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diags = diags.Append(&hcl.Diagnostic{
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Severity: hcl.DiagError,
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Summary: "Unsupported Terraform Core version",
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Detail: fmt.Sprintf(
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"Module %s (from %s) does not support Terraform version %s. To proceed, either choose another supported Terraform version or update this version constraint. Version constraints are normally set for good reason, so updating the constraint may lead to other errors or unexpected behavior.",
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config.Path, config.SourceAddr, tfversion.String(),
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),
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Subject: &constraint.DeclRange,
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})
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}
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}
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}
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for _, c := range config.Children {
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childDiags := CheckCoreVersionRequirements(c)
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diags = diags.Append(childDiags)
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}
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return diags
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}
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