Terraform code generator for Datadog

Usage

First make sure auto-completions work. That and the -h option are the main documentation features.

Here's a list of good examples:

Generate a TF monitor. (will not terraform apply/init)

# this wil create a config file you can edit:
ddtfgen defaults_file .

# <edit the config file> 

# this will generate a monitor based on the config file:
ddtfgen monitor_from_template modules/mymodule my_monitor

Generate a TF monitor from existing monitor in the Datadog UI. (will not terraform import yet)

monitor_from_id 2001855 modules/mymodule

Generate an empty module. (You will need to use/import the module by yourself)

ddtfgen module modules/mymodule

Generate a TF module based on existing monitors. You can use the query just as in the Datadog UI. It will also try to guess the service_name. This feature lets you import a whole set of monitors at once.

ddtfgen module --from_query "service:vault" modules/mymodule

Mass move terraform state. Do you also like running 20 terraform state mv commands by hand?

ddtfgen mass_state_move module.a.b. module.c.d.

Get Host list:

ddtfgen --config_name X get_host_list --host_name_pattern "*.local" --tags_pattern "service:abc"

Generate services file: This will output a yaml file that shows the dependencies between services

ddtfgen services_file prd

Get a summary of changes that Terraform wishes to perform

ddtfgen get_terraform_changes

Get monitor list from query:

ddtfgen monitors --query 'service:"kubernetes" notification:servicenow-toyotaeurope'

Generate a csv table:

ddtfgen table --agg_metric_names max:rabbitmq.queue.messages max:rabbitmq.queue.consumers --group_by rabbitmq_queue rabbitmq_vhost --from 1 hours ago --to now

Generate the TF code for log metrics

Autocompletions

activate-global-python-argcomplete3

add this to your .bashrc or .zshrc

eval "$(register-python-argcomplete3 ddtfgen)"

Developing

Pre-commit:

• Install pre-commit. E.g. brew install pre-commit.
• Run pre-commit install in the repo.
• That’s it! Now every time you commit a code change (.tf file), the hooks in the hooks: config .pre-commit-config.yaml will execute.

Pip install in edit mode:

pip install -e .