2332a7ab47
ioutil.TempFile has a special case where an empty string for its dir argument is interpreted as a request to automatically look up the system temporary directory, which is commonly /tmp . We don't want that behavior here because we're specifically trying to create the temporary file in the same directory as the file we're hoping to replace. If the file gets created in /tmp then it might be on a different device and thus the later atomic rename won't work. Instead, we'll add our own special case to explicitly use "." when the given filename is in the current working directory. That overrides the special automatic behavior of ioutil.TempFile and thus forces the behavior we need. This hadn't previously mattered for earlier callers of this code because they were creating files in subdirectories, but this codepath was failing for the dependency lock file due to it always being created directly in the current working directory. Unfortunately since this is a picky implementation detail I couldn't find a good way to write a unit test for it without considerable refactoring. Instead, I verified manually that the temporary filename wasn't in /tmp on my Linux system, and hope that the comment inline will explain this situation well enough to avoid an accidental regression in future maintenence. |
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| communicator | ||
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| contrib | ||
| dag | ||
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| flatmap | ||
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| httpclient | ||
| instances | ||
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| plans | ||
| plugin | ||
| providers | ||
| provisioners | ||
| registry | ||
| repl | ||
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| terraform | ||
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| .hashibot.hcl | ||
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| BUGPROCESS.md | ||
| CHANGELOG.md | ||
| CODEOWNERS | ||
| Dockerfile | ||
| LICENSE | ||
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| README.md | ||
| checkpoint.go | ||
| codecov.yml | ||
| commands.go | ||
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| help.go | ||
| main.go | ||
| main_test.go | ||
| panic.go | ||
| plugins.go | ||
| provider_source.go | ||
| signal_unix.go | ||
| signal_windows.go | ||
| synchronized_writers.go | ||
| version.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:
-
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.
-
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.
-
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.
-
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 that each have their own repository in the terraform-providers organization on GitHub. Instructions for developing each provider are in the associated README file. For more information, see the provider development overview.
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.