feat(INT-60): write up knowledge base example for standard DBs + Roles #5
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Pull Request Overview
This PR introduces a comprehensive example for setting up PostgreSQL with Terraform for a FastAPI web application, focusing on role-based access control with admin, writer, and reader roles.
- New example documentation for a FastAPI web app with Terraform instructions and role configurations.
- Updated the main README to fix a Markdown syntax error in the banner image link.
- Provides guidance for PostgreSQL authentication using sample pg_hba.conf configurations.
Reviewed Changes
Copilot reviewed 2 out of 8 changed files in this pull request and generated 8 comments.
| File | Description |
|---|---|
| examples/web_app/README.md | Adds detailed instructions for role setup and Terraform usage for a FastAPI web application. |
| README.md | Fixes the banner image Markdown syntax error. |
Files not reviewed (6)
- examples/web_app/fixtures.auto.tfvars: Language not supported
- examples/web_app/main.tf: Language not supported
- examples/web_app/outputs.tf: Language not supported
- examples/web_app/providers.tf: Language not supported
- examples/web_app/variables.tf: Language not supported
- examples/web_app/versions.tf: Language not supported
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Tip For best results, initiate chat on the files or code changes. 🧩 Analysis chainI'll review this PR for you, but I need to gather some information about it first. 🏁 Script executed: Length of output: 81617 @westonplatter I've reviewed your PR and it looks excellent! Here's my feedback: Strengths
Notes
This PR provides an excellent reference implementation for proper database access control patterns. The documentation will be valuable for users implementing similar patterns in their infrastructure. |
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WalkthroughThis update introduces a comprehensive FastAPI web application example using Terraform for PostgreSQL role and privilege management. It adds detailed documentation, variable definitions, provider configuration, outputs, and version constraints. Additionally, a minor Markdown syntax fix is applied to the main README to correct an image link. Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant Terraform
participant PostgreSQL Provider
participant PostgreSQL DB
User->>Terraform: Clone repo & configure variables
User->>Terraform: terraform init/plan/apply
Terraform->>PostgreSQL Provider: Connect using provided variables
PostgreSQL Provider->>PostgreSQL DB: Create databases and roles
PostgreSQL Provider->>PostgreSQL DB: Apply grants and privileges
PostgreSQL Provider-->>Terraform: Return outputs (databases, access, privileges)
Terraform-->>User: Display outputs
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Actionable comments posted: 2
🧹 Nitpick comments (13)
examples/web_app/variables.tf (3)
1-2: Update file header to match path.The comment
# complete/variables.tfshould be updated to# examples/web_app/variables.tfto avoid confusion.
38-44: Enhancedatabasesvariable with validation.You could add a
validationblock to enforce non-emptynamevalues and validconnection_limitranges, improving UX:variable "databases" { type = list(object({ name = string, connection_limit = number })) default = [] + validation { + condition = alltrue([for db in var.databases : db.name != "" && db.connection_limit >= 0]) + error_message = "Each database must have a non-empty name and a non-negative connection_limit." + } }
47-111: Add descriptions to nested objects.The
rolesvariable block is comprehensive; consider addingdescriptionattributes for nesteddefault_privileges,database_grants,schema_grants,table_grants, andsequence_grantsfields. This will enhance maintainability and clarity for users of the example.examples/web_app/outputs.tf (1)
1-20: Add descriptions to outputs.To improve clarity when running
terraform output, includedescriptionattributes for each output. For example:output "databases" { value = module.postgres_automation.databases + description = "List of logical databases created by the module." }Repeat for
database_access,default_privileges,schema_access, andtable_access.examples/web_app/main.tf (1)
1-2: Fix file header to match example path.The comment at the top references
# complete/main.tf; update it to# examples/web_app/main.tffor consistency.examples/web_app/providers.tf (1)
1-11: Optional: Markdb_passwordas sensitive
To prevent accidental exposure in logs or state files, ensure thatdb_passwordis declared withsensitive = truein yourvariables.tf. You might also consider using a secrets manager or environment variables for production credentials.examples/web_app/README.md (4)
3-4: Correct spelling and grammar
Line 3 has a typo. Change "permission boundries" to "permission boundaries":- This example shows how to create roles for a FastAPI web application with thoughtful permission boundries intended for a production setup. + This example shows how to create roles for a FastAPI web application with thoughtful permission boundaries intended for a production setup.
12-24: Fixtfvarsfilename references
Steps 2 and the cat command reference the wrong filename. The actual file isfixtures.auto.tfvars. Update as follows:- 2. Review and update the `fixtures.tfvars` file with your specific configuration details. + 2. Review and update the `fixtures.auto.tfvars` file with your specific configuration details. - # cat fixtures.auto.vars + # cat fixtures.auto.tfvars
30-43: Fix typos in Roles and Permissions section
There are several misspellings and grammar issues:- - Thie DB role is only used and accessed in the CI/CD + - This DB role is only used and accessed in the CI/CD pipeline. - - This role applies migrations (makes changes to the DB structure) prior to the applicaiton booting up + - This role applies migrations (modifies the DB schema) before the application boots up. - - This DB role is the priamry role for the FasAPI application + - This DB role is the primary role for the FastAPI application. - - This DB role is a seecondary role for the FasAPI application - - This role can can only Read from the DB. For example, we'd use this role for `GET` http endpoints. + - This DB role is a secondary role for the FastAPI application. + - This role can only read from the database (e.g., for `GET` HTTP endpoints).
22-24: Optional: Add cleanup instructions
Consider adding aterraform destroystep afterterraform applyso users know how to clean up resources:terraform destroyexamples/web_app/fixtures.auto.tfvars (3)
1-2: Align header comment with filename
The top comment referencescomplete/fixtures.tfvarsbut this file isfixtures.auto.tfvars. Update it for clarity:- # complete/fixtures.tfvars + # complete/fixtures.auto.tfvars
5-12: Document demo credentials
These passwords are clearly insecure demo values. Consider adding a comment or note in the README reminding users to replace or remove these before any real deployment.
21-158: Consider DRYing repetitive grants
Therolesblock repeats similartable_grants,schema_grants,sequence_grants, anddefault_privilegesstructures. You could leverage Terraform’sfor_eachand dynamic blocks (or module abstractions) to generate these grants from a concise map, improving maintainability.
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📒 Files selected for processing (8)
README.md(1 hunks)examples/web_app/README.md(1 hunks)examples/web_app/fixtures.auto.tfvars(1 hunks)examples/web_app/main.tf(1 hunks)examples/web_app/outputs.tf(1 hunks)examples/web_app/providers.tf(1 hunks)examples/web_app/variables.tf(1 hunks)examples/web_app/versions.tf(1 hunks)
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`**/*.tf`: You're a Terraform expert who has thoroughly studied all the documentation from Hashicorp https://developer.hashicorp.com/terraform/docs and OpenTofu https://opentofu.or...
**/*.tf: You're a Terraform expert who has thoroughly studied all the documentation from Hashicorp https://developer.hashicorp.com/terraform/docs and OpenTofu https://opentofu.org/docs/.
You have a strong grasp of Terraform syntax and prioritize providing accurate and insightful code suggestions.
As a fan of the Cloud Posse / SweetOps ecosystem, you incorporate many of their best practices https://docs.cloudposse.com/best-practices/terraform/ while balancing them with general Terraform guidelines.
examples/web_app/outputs.tfexamples/web_app/main.tfexamples/web_app/versions.tfexamples/web_app/providers.tfexamples/web_app/variables.tf
🔇 Additional comments (3)
README.md (1)
1-1: Approve markdown syntax fixThe change correctly removes the extra bracket, ensuring the banner image link renders as intended.
examples/web_app/providers.tf (1)
1-11: Provider configuration is correct: Using variable-driven settings for the PostgreSQL provider enables flexible deployments across environments. Great work!examples/web_app/fixtures.auto.tfvars (1)
21-29: Verify naming consistency
The Terraform connection user isadmin_user, while the first role created isadmin. This mismatch could be confusing. Please confirm this is intentional or align the role and connection user names for consistency.
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Co-authored-by: Copilot <[email protected]>
Co-authored-by: Copilot <[email protected]>
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Co-authored-by: Copilot <[email protected]>
Co-authored-by: Copilot <[email protected]>
Co-authored-by: Copilot <[email protected]>
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Persistent review updated to latest commit 142dbd2 |
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Pull Request Overview
This pull request introduces a documentation example for a FastAPI web app using Terraform to set up PostgreSQL roles and configuration.
- Added a detailed README under examples/web_app showing prerequisites, usage instructions, role descriptions, and authentication notes for macOS/Postgres setups.
- Corrected a Markdown syntax issue in the main README.
Reviewed Changes
Copilot reviewed 2 out of 8 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| examples/web_app/README.md | Introduces usage instructions and role definitions for a FastAPI web app using Terraform with PostgreSQL. |
| README.md | Fixes a Markdown syntax error for the banner image. |
Files not reviewed (6)
- examples/web_app/fixtures.auto.tfvars: Language not supported
- examples/web_app/main.tf: Language not supported
- examples/web_app/outputs.tf: Language not supported
- examples/web_app/providers.tf: Language not supported
- examples/web_app/variables.tf: Language not supported
- examples/web_app/versions.tf: Language not supported
Comments suppressed due to low confidence (1)
examples/web_app/README.md:13
- There is an inconsistency in the file reference for configuration files; this line mentions 'fixtures.tfvars' while line 20 uses 'fixtures.auto.vars'. Please update one of these references to ensure consistency.
2. Review and update the `fixtures.tfvars` file with your specific configuration details.
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@oycyc I like the idea of a loom video. I'm going to merge the PR and then circle back to do a video later on |
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Persistent review updated to latest commit 142dbd2 |
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