d09510a8fb
In the original incarnation of Meta.providerFactories we were returning into a Meta.contextOpts whose signature didn't allow it to return an error directly, and so we had compromised by making the provider factory functions themselves return errors once called. Subsequent work made Meta.contextOpts need to return an error anyway, but at the time we neglected to update our handling of the providerFactories result, having it still defer the error handling until we finally instantiate a provider. Although that did ultimately get the expected result anyway, the error ended up being reported from deep in the guts of a Terraform Core graph walk, in whichever concurrently-visited graph node happened to try to instantiate the plugin first. This meant that the exact phrasing of the error message would vary between runs and the reporting codepath didn't have enough context to given an actionable suggestion on how to proceed. In this commit we make Meta.contextOpts pass through directly any error that Meta.providerFactories produces, and then make Meta.providerFactories produce a special error type so that Meta.Backend can ultimately return a user-friendly diagnostic message containing a specific suggestion to run "terraform init", along with a short explanation of what a provider plugin is. The reliance here on an implied contract between two functions that are not directly connected in the callstack is non-ideal, and so hopefully we'll revisit this further in future work on the overall architecture of the CLI layer. To try to make this robust in the meantime though, I wrote it to use the errors.As function to potentially unwrap a wrapped version of our special error type, in case one of the intervening layers is changed at some point to wrap the downstream error before returning it. |
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| tools | ||
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| website | ||
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| .go-version | ||
| .tfdev | ||
| BUGPROCESS.md | ||
| CHANGELOG.md | ||
| CODEOWNERS | ||
| Dockerfile | ||
| LICENSE | ||
| Makefile | ||
| README.md | ||
| checkpoint.go | ||
| codecov.yml | ||
| commands.go | ||
| go.mod | ||
| go.sum | ||
| help.go | ||
| main.go | ||
| main_test.go | ||
| plugins.go | ||
| provider_source.go | ||
| signal_unix.go | ||
| signal_windows.go | ||
| version.go | ||
| working_dir.go | ||
README.md
Terraform
- Website: https://www.terraform.io
- Forums: HashiCorp Discuss
- Documentation: https://www.terraform.io/docs/
- Tutorials: HashiCorp's Learn Platform
- Certification Exam: HashiCorp Certified: Terraform Associate
Terraform is a tool for building, changing, and versioning infrastructure safely and efficiently. Terraform can manage existing and popular service providers as well as custom in-house solutions.
The key features of Terraform are:
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Infrastructure as Code: Infrastructure is described using a high-level configuration syntax. This allows a blueprint of your datacenter to be versioned and treated as you would any other code. Additionally, infrastructure can be shared and re-used.
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Execution Plans: Terraform has a "planning" step where it generates an execution plan. The execution plan shows what Terraform will do when you call apply. This lets you avoid any surprises when Terraform manipulates infrastructure.
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Resource Graph: Terraform builds a graph of all your resources, and parallelizes the creation and modification of any non-dependent resources. Because of this, Terraform builds infrastructure as efficiently as possible, and operators get insight into dependencies in their infrastructure.
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Change Automation: Complex changesets can be applied to your infrastructure with minimal human interaction. With the previously mentioned execution plan and resource graph, you know exactly what Terraform will change and in what order, avoiding many possible human errors.
For more information, see the introduction section of the Terraform website.
Getting Started & Documentation
Documentation is available on the Terraform website:
If you're new to Terraform and want to get started creating infrastructure, please check out our Getting Started guides on HashiCorp's learning platform. There are also additional guides to continue your learning.
Show off your Terraform knowledge by passing a certification exam. Visit the certification page for information about exams and find study materials on HashiCorp's learning platform.
Developing Terraform
This repository contains only Terraform core, which includes the command line interface and the main graph engine. Providers are implemented as plugins, and Terraform can automatically download providers that are published on the Terraform Registry. HashiCorp develops some providers, and others are developed by other organizations. For more information, see Extending Terraform.
To learn more about compiling Terraform and contributing suggested changes, please refer to the contributing guide.
To learn more about how we handle bug reports, please read the bug triage guide.