tf_module_resource_name

Overview

This module generates the name of cloud resources in different formats as specified below. For the product_family demo_org, product_service test_backend, environment dev and cloud resource acr with a default maximum_length 60

# Outputs
camel_case = "Demo_orgTest_backendUseast2Dev000Acr000"
camel_case_with_separator = "Demo_org-Test_backend-Useast2-Dev-000-Acr-000"
camel_case_without_any_separators = "DemoorgTestbackendUseast2Dev000Acr000"
dns_compliant_minimal = "demo-org-test-backend-dev-000-acr"
dns_compliant_minimal_random_suffix = "demo-org-test-backend-9349499394"
lower_case = "demo_orgtest_backenduseast2dev000acr000"
lower_case_with_separator = "demo_org-test_backend-useast2-dev-000-acr-000"
lower_case_without_any_separators = "demoorgtestbackenduseast2dev000acr000"
minimal = "demo_org-test_backend-dev-000-acr"
minimal_random_suffix = "demo_org-test_backend-9349499394"
recommended_per_length_restriction = "demo_org-test_backend-useast2-dev-000-acr-000"
standard = "demo_org-test_backend-useast2-dev-000-acr-000"
upper_case = "DEMO_ORGTEST_BACKENDUSEAST2DEV000ACR000"
upper_case_with_separator = "DEMO_ORG-TEST_BACKEND-USEAST2-DEV-000-ACR-000"
upper_case_without_any_separators = "DEMOORGTESTBACKENDUSEAST2DEV000ACR000"

The same output with a maximum_length of 32 generates below.

Observe the value of recommended_per_length_restriction

camel_case = "DemoBackendEus2Dev001Acr000"
camel_case_with_separator = "Demo-Backend-Eus2-Dev-001-Acr-000"
camel_case_without_any_separators = "DemoBackendEus2Dev001Acr000"
dns_compliant_minimal = "demo-backend-dev-001-acr"
dns_compliant_minimal_random_suffix = "demo-backend-9003923140"
dns_compliant_standard = "demo-backend-eus2-dev-001-acr-000"
lower_case = "demobackendeus2dev001acr000"
lower_case_with_separator = "demo-backend-eus2-dev-001-acr-000"
lower_case_without_any_separators = "demobackendeus2dev001acr000"
minimal = "demo-backend-dev-001-acr"
minimal_random_suffix = "demo-backend-9003923140"
minimal_random_suffix_without_any_separators = "demobackend9003923140"
recommended_per_length_restriction = "demobackendeus2dev001acr000"
standard = "demo-backend-eus2-dev-001-acr-000"
upper_case = "DEMOBACKENDEUS2DEV001ACR000"
upper_case_with_separator = "DEMO-BACKEND-EUS2-DEV-001-ACR-000"
upper_case_without_any_separators = "DEMOBACKENDEUS2DEV001ACR000"

Pre-Commit hooks

.pre-commit-config.yaml file defines certain pre-commit hooks that are relevant to terraform, golang and common linting tasks. There are no custom hooks added.

commitlint hook enforces commit message in certain format. The commit contains the following structural elements, to communicate intent to the consumers of your commit messages:

• fix: a commit of the type fix patches a bug in your codebase (this correlates with PATCH in Semantic Versioning).
• feat: a commit of the type feat introduces a new feature to the codebase (this correlates with MINOR in Semantic Versioning).
• BREAKING CHANGE: a commit that has a footer BREAKING CHANGE:, or appends a ! after the type/scope, introduces a breaking API change (correlating with MAJOR in Semantic Versioning). A BREAKING CHANGE can be part of commits of any type. footers other than BREAKING CHANGE: may be provided and follow a convention similar to git trailer format.
• build: a commit of the type build adds changes that affect the build system or external dependencies (example scopes: gulp, broccoli, npm)
• chore: a commit of the type chore adds changes that don't modify src or test files
• ci: a commit of the type ci adds changes to our CI configuration files and scripts (example scopes: Travis, Circle, BrowserStack, SauceLabs)
• docs: a commit of the type docs adds documentation only changes
• perf: a commit of the type perf adds code change that improves performance
• refactor: a commit of the type refactor adds code change that neither fixes a bug nor adds a feature
• revert: a commit of the type revert reverts a previous commit
• style: a commit of the type style adds code changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
• test: a commit of the type test adds missing tests or correcting existing tests

Base configuration used for this project is commitlint-config-conventional (based on the Angular convention)

If you are a developer using vscode, this plugin may be helpful.

detect-secrets-hook prevents new secrets from being introduced into the baseline. TODO: INSERT DOC LINK ABOUT HOOKS

In order for pre-commit hooks to work properly

• You need to have the pre-commit package manager installed. Here are the installation instructions.
• pre-commit would install all the hooks when commit message is added by default except for commitlint hook. commitlint hook would need to be installed manually using the command below

pre-commit install --hook-type commit-msg

To test the resource group module locally

1. For development/enhancements to this module locally, you'll need to install all of its components. This is controlled by the configure target in the project's Makefile. Before you can run configure, familiarize yourself with the variables in the Makefile and ensure they're pointing to the right places.

make configure

This adds in several files and directories that are ignored by git. They expose many new Make targets.

2. The first target you care about is env. This is the common interface for setting up environment variables. The values of the environment variables will be used to authenticate with cloud provider from local development workstation.

make configure command will bring down azure_env.sh file on local workstation. Devloper would need to modify this file, replace the environment variable values with relevant values.

These environment variables are used by terratest integration suit.

Service principle used for authentication(value of ARM_CLIENT_ID) should have below privileges on resource group within the subscription.

"Microsoft.Resources/subscriptions/resourceGroups/write"
"Microsoft.Resources/subscriptions/resourceGroups/read"
"Microsoft.Resources/subscriptions/resourceGroups/delete"

Then run this make target to set the environment variables on developer workstation.

make env

3. The first target you care about is check.

Pre-requisites Before running this target it is important to ensure that, developer has created files mentioned below on local workstation under root directory of git repository that contains code for primitives/segments. Note that these files are azure specific. If primitive/segment under development uses any other cloud provider than azure, this section may not be relevant.

• A file named provider.tf with contents below

provider "azurerm" {
  features {}
}

• A file named terraform.tfvars which contains key value pair of variables used.

Note that since these files are added in gitgnore they would not be checked in into primitive/segment's git repo.

After creating these files, for running tests associated with the primitive/segment, run

make check

If make check target is successful, developer is good to commit the code to primitive/segment's git repo.

make check target

• runs terraform commands to lint,validate and plan terraform code.
• runs conftests. conftests make sure policy checks are successful.
• runs terratest. This is integration test suit.
• runs opa tests

Requirements

Name	Version
terraform	~> 1.0
random	>= 3.5

Providers

Name	Version
random	3.6.3

Modules

No modules.

Resources

Name	Type
random_integer.random_number	resource

Inputs

Name	Description	Type	Default	Required
logical_product_family	(Required) Name of the product family for which the resource is created. Example: org_name, department_name.	string	n/a	yes
logical_product_service	(Required) Name of the product service for which the resource is created. For example, backend, frontend, middleware etc.	string	n/a	yes
region	(Required) The location where the resource will be created. Must not have spaces For example, us-east-2, useast2, West-US-2	string	n/a	yes
class_env	(Required) Environment where resource is going to be deployed. For example. dev, qa, uat	string	n/a	yes
instance_env	Number that represents the instance of the environment.	number	0	no
cloud_resource_type	(Required) Abbreviation for the type of resource. For ex. 'rg' for Azure Resource group.	string	n/a	yes
instance_resource	Number that represents the instance of the resource.	number	0	no
maximum_length	Number that represents the maximum length the resource name could have.	number	60	no
separator	Separator to be used in the name	string	"-"	no
use_azure_region_abbr	Whether to use Azure region abbreviation e.g. eastus -> eus	bool	false	no

Outputs

Name	Description
lower_case	Name of the resource in lower case.
lower_case_without_any_separators	Name of the resource in lower case without any separators. Will remove any separators present in any fields as well.
lower_case_with_separator	Name of the resource with lower case and separator. If separator is not provided by user, then '-' character will be used as a separator.
upper_case	Name of the resource in upper case.
upper_case_without_any_separators	Name of the resource in upper case without any separators. Will remove any separators present in any fields as well.
upper_case_with_separator	Name of the resource in upper case and separator. If separator is not provided by user, then '-' character will be used as a separator.
standard	Name of the resource as per pre-determined recommended naming convention that is join each field with the provided separator
recommended_per_length_restriction	Name of the resource that fits the maximum length restriction criteria specified by the user. Returns standard else camel_case_without_any_separators else minimal_without_any_separators until it satisfies the maximum_length requirements
camel_case	Name of the resource in camel case.
camel_case_without_any_separators	Name of the resource in camel case. Will remove any separators present in any fields as well.
camel_case_with_separator	Name of the resource in camel case and separator. If separator is not provided by user, then '-' character will be used as a separator.
minimal	Name of the resource would exclude region, instance_resource
minimal_random_suffix	Name of the resource would exclude region, instance_resource and append a random number suffix. This supports max_length restriction
minimal_random_suffix_without_any_separators	Name of the resource would exclude region, instance_resource and append a random number suffix. This supports max_length restriction and will remove any separators present in any fields as well.
dns_compliant_minimal	Name is minimal and DNS complaint, that is it can contain only -.
dns_compliant_standard	Name is standard and DNS complaint, that is it can contain only -.
dns_compliant_minimal_random_suffix	Name is minimal_random_suffix and DNS complaint, that is it can contain only -.