Terraform Provider: Snowflake

Please note: If you believe you have found a security issue, please responsibly disclose by contacting us at [email protected].

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This is a terraform provider plugin for managing Snowflake accounts.

Getting Help

If you need help, try the discussions area of this repo. We also use this forum to discuss new features and changes to the provider.

Note: If you are an enterprise customer, please contact your Snowflake account representative. We prioritize support over GitHub issues. Also it helps us with allocating additional engineering resources to supporting the provider.

Install

You can install the provider using terraform init, all you need to do is include the following block in your Terraform settings configuration. Refer to Explicit Provider Source Locations for more information.

terraform {
  required_providers {
    snowflake = {
      source  = "Snowflake-Labs/snowflake"
      version = "~> 0.60"
    }
  }
}

Upgrading from CZI Provider

As of (5/25/2022) to provider has been transferred from Chan Zuckerberg Initiative (CZI) to Snowflake-Labs. To upgrade from CZI, please run the following command:

terraform state replace-provider chanzuckerberg/snowflake Snowflake-Labs/snowflake

You should also update your lock file / Terraform provider version pinning. From the deprecated source:

# deprecated source
terraform {
  required_providers {
    snowflake = {
      source  = "chanzuckerberg/snowflake"
      version = "0.36.0"
    }
  }
}

To new source:

# new source
terraform {
  required_providers {
    snowflake = {
      source  = "Snowflake-Labs/snowflake"
      version = "0.36.0"
    }
  }
}

If you are not pinning your provider versions, you may find it useful to forcefully upgrade providers using the command:

terraform init -upgrade

Note: 0.34 is the first version published after the transfer. When the provider was transferred over not all of the older releases were transferred for some reason. Only versions 0.28 and newer were transferred. If you are using a version older than 0.28, it is highly recommended to upgrade to a newer version.

Usage

An introductory tutorial is available from Snowflake.

In-depth docs are available on the Terraform registry.

Development

If you do not have Go installed:

1. Install Go brew install golang
2. Ensure that your GOPATH is set correctly
3. Fork this repo and clone it into ~/go/src/github.com/Snowflake-Labs/terraform-provider-snowflake
4. cd to terraform-provider-snowflake and install all the required packages with go get
5. Build provider with go install

Testing

The following environment variables need to be set for acceptance tests to run:

• SNOWFLAKE_ACCOUNT - The account name
• SNOWFLAKE_USER - A snowflake user for running tests.
• SNOWFLAKE_PASSWORD - Password for that user.
• SNOWFLAKE_ROLE - Needs to be ACCOUNTADMIN or similar.
• SNOWFLAKE_REGION - Default is us-west-2, set this if your snowflake account is in a different region.
• TF_ACC - to enable acc tests.

e.g.

export SNOWFLAKE_ACCOUNT=TESTACCOUNT
export SNOWFLAKE_USER=TEST_USER
export SNOWFLAKE_PASSWORD=hunter2
export SNOWFLAKE_ROLE=ACCOUNTADMIN
export SNOWFLAKE_REGION=us-west-2
export TF_ACC=true

Note: PRs for new resources will not be accepted without passing acceptance tests.

For the Terraform resources, there are 3 levels of testing - internal, unit and acceptance tests.

The 'internal' tests are run in the github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/resources package so that they can test functions that are not exported. These tests are intended to be limited to unit tests for simple functions.

The 'unit' tests are run in github.com/Snowflake-Labs/terraform-provider-snowflake/pkg/resources_test, so they only have access to the exported methods of resources. These tests exercise the CRUD methods that on the terraform resources. Note that all tests here make use of database mocking and are run locally. This means the tests are fast, but are liable to be wrong in subtle ways (since the mocks are unlikely to be perfect).

You can run these first two sets of tests with make test.

The 'acceptance' tests run the full stack, creating, modifying and destroying resources in a live snowflake account. To run them you need a snowflake account and the proper authentication set up. These tests are slower but have higher fidelity.

To run all tests, including the acceptance tests, run make test-acceptance.

If you are making a PR from a forked repo, you can create a new Snowflake Enterprise trial account and set up Travis to build it by setting these environment variables:

Advanced Debugging

If you want to build and test the provider locally there is a make target make install-tf that will build the provider binary and install it in a location that terraform can find.

To debug the provider with a debugger:

1. Launch the provider with the -debug command line argument in your debugger session. Once the provider starts, it will print instructions on setting the TF_REATTACH_PROVIDERS environment variable.

   Provider started. To attach Terraform CLI, set the TF_REATTACH_PROVIDERS environment variable with the following:
   
   Command Prompt:	set "TF_REATTACH_PROVIDERS={"registry.terraform.io/Snowflake-Labs/snowflake":{"Protocol":"grpc","ProtocolVersion":5,"Pid":35140,"Test":true,"Addr": {"Network":"tcp","String":"127.0.0.1:54706"}}}"
   PowerShell:	$env:TF_REATTACH_PROVIDERS='{"registry.terraform.io/Snowflake-Labs/snowflake":{"Protocol":"grpc","ProtocolVersion":5,"Pid":35140,"Test":true,"Addr":{"Network":"tcp","String":"127.0.0.1:54706"}}}'
   

2. Open a terminal where you will execute Terraform and set the TF_REATTACH_PROVIDERS environment variable using the command from the first step.
3. Run Terraform as usual from this terminal. Any breakpoints you set will halt execution and you can troubleshoot the provider from your debugger.

Note: The TF_REATTACH_PROVIDERS environment variable needs to be set every time you restart your debugger session as some values like the Pid or the TCP port will change with every execution.

For further instructions, please check the official Terraform Plugin Development guide.

Contributing

We use Conventional Commits for commit messages formatting. Please try to adhere to the standard. Validation is done with this regular expression:

https://github.com/Snowflake-Labs/terraform-provider-snowflake/blob/main/.github/workflows/titleLint.yml#L17

Releasing

Releases will be performed as needed, typically once every 1-2 weeks. If your change is more urgent and you need to use it sooner, use the commit hash.

Releases are done by goreleaser and run by our make files. There two goreleaser configs, .goreleaser.yml for regular releases and .goreleaser.prerelease.yml for doing prereleases (for testing).

Releases are published to the terraform registry, which requires that releases by signed.