# inwerejosic/go-for-trivy-test architecture

> Architecture diagram of the GitHub repository inwerejosic/go-for-trivy-test, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-08-03). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/inwerejosic/go-for-trivy-test
- Repository: https://github.com/inwerejosic/go-for-trivy-test

## Overview

#### Purpose and Entry Point
This is a minimal Go/Gin HTTP API used to demonstrate REST handling, container delivery, and CI security validation. The process entry point is `main.go`; it starts a Gin server intended to listen on port 8080.

#### HTTP API Layer
Gin owns request routing, JSON binding, and response serialization in `main.go`.

- `GET /ping` is the health/check endpoint and returns a static JSON message.
- `POST /greet` accepts a JSON body containing `name` and returns a greeting.
- The API is stateless: no database, queue, filesystem persistence, authentication, or external application service is indicated.

Paths: `main.go`, `go.mod`

#### Greeting Decision Flow
The `/greet` request crosses a small in-process flow in `main.go`:

1. Gin decodes the request JSON into the request model.
2. Server-local current time determines the greeting period (morning, afternoon, evening, or night).
3. The selected greeting and supplied name are serialized as JSON.

The server clock is the material boundary for greeting behavior; output can vary by runtime time zone and hour.

Paths: `main.go`

#### Go Dependency Boundary
The application is a Go module, with Gin as its principal web-framework dependency. Dependency versions and transitive dependency integrity are captured by the module manifests.

Paths: `go.mod`, `go.sum`

#### Container Runtime
`Dockerfile` packages the Go API as a Docker image. The image is run with port `8080` exposed/mapped to the host, making the Gin listener reachable externally. Docker is the intended local and CI runtime boundary rather than a separate application platform.

Paths: `Dockerfile`, `main.go`

#### CI Build, Runtime Verification, and Security Gate
GitHub Actions executes the delivery validation pipeline. It builds the Docker image, runs the container, exercises the API endpoints, and scans the built image with Trivy. HIGH or CRITICAL vulnerability findings are a release-quality gate that fails CI.

The workflow is triggered for changes targeting `main` according to repository documentation.

Paths: `.github/workflows/docker-build.yaml`, `Dockerfile`

#### External Infrastructure and Services
- GitHub Actions provides hosted CI execution.
- Docker provides image build and container execution.
- Trivy provides image vulnerability scanning against known-vulnerability data.
- No deployed cloud service, registry publishing, database, secret store, or observability backend is represented in the repository tree.

Main entry points: [`Dockerfile`](https://github.com/inwerejosic/go-for-trivy-test/blob/main/Dockerfile) (Running API container), [`.github/workflows/docker-build.yaml`](https://github.com/inwerejosic/go-for-trivy-test/blob/main/.github/workflows/docker-build.yaml) (GitHub Actions), [`main.go`](https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go) (Gin router), [`go.mod`](https://github.com/inwerejosic/go-for-trivy-test/blob/main/go.mod) (Go module + Gin)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_api["Go API"]
  node_gin["Gin router<br/>HTTP framework<br/>[main.go]"]
  node_ping["GET /ping<br/>health endpoint<br/>[main.go]"]
  node_greet["POST /greet<br/>greeting endpoint<br/>[main.go]"]
  node_request_model["Greeting request<br/>JSON model<br/>[main.go]"]
  node_server_clock(("Server clock<br/>runtime boundary<br/>[main.go]"))
  node_greeting_response["Greeting JSON<br/>HTTP response<br/>[main.go]"]
  node_go_module["Go module + Gin<br/>dependency manifest<br/>[go.mod]"]
end

subgraph group_delivery["Container Delivery"]
  node_dockerfile["Docker image build<br/>container definition"]
  node_container["Running API container<br/>Docker runtime"]
end

subgraph group_ci["CI Validation"]
  node_github_actions["GitHub Actions<br/>CI runner<br/>[docker-build.yaml]"]
  node_runtime_checks["Endpoint verification<br/>CI runtime test<br/>[docker-build.yaml]"]
  node_trivy{{"Trivy image scan<br/>security gate<br/>[docker-build.yaml]"}}
end

node_client(("API client<br/>external caller"))

node_client -->|"port 8080"| node_container
node_container -->|"serves"| node_gin
node_gin -->|"GET /ping"| node_ping
node_gin -->|"POST /greet"| node_greet
node_greet -->|"binds JSON"| node_request_model
node_greet -->|"reads current time"| node_server_clock
node_server_clock -->|"selects period"| node_greeting_response
node_request_model -->|"supplies name"| node_greeting_response
node_go_module -.->|"provides framework"| node_gin
node_dockerfile -->|"builds image"| node_container
node_github_actions -->|"builds"| node_dockerfile
node_github_actions -->|"runs"| node_container
node_github_actions -->|"executes"| node_runtime_checks
node_runtime_checks -->|"calls endpoints"| node_container
node_github_actions -->|"scans image"| node_trivy
node_trivy -.->|"gates image"| node_dockerfile

click node_gin "https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go"
click node_ping "https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go"
click node_greet "https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go"
click node_request_model "https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go"
click node_server_clock "https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go"
click node_greeting_response "https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go"
click node_go_module "https://github.com/inwerejosic/go-for-trivy-test/blob/main/go.mod"
click node_dockerfile "https://github.com/inwerejosic/go-for-trivy-test/blob/main/Dockerfile"
click node_container "https://github.com/inwerejosic/go-for-trivy-test/blob/main/Dockerfile"
click node_github_actions "https://github.com/inwerejosic/go-for-trivy-test/blob/main/.github/workflows/docker-build.yaml"
click node_runtime_checks "https://github.com/inwerejosic/go-for-trivy-test/blob/main/.github/workflows/docker-build.yaml"
click node_trivy "https://github.com/inwerejosic/go-for-trivy-test/blob/main/.github/workflows/docker-build.yaml"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_gin,node_ping,node_greet,node_request_model,node_server_clock,node_greeting_response,node_go_module toneBlue
class node_dockerfile,node_container toneAmber
class node_github_actions,node_runtime_checks,node_trivy toneMint
class node_client toneNeutral
```

## Components

### Go API

- [Gin router](https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go): HTTP framework · Routes requests and handles JSON binding and responses. · `main.go`
- [GET /ping](https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go): health endpoint · Returns a static JSON message. · `main.go`
- [POST /greet](https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go): greeting endpoint · `main.go`
- [Greeting request](https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go): JSON model · Accepts the supplied name. · `main.go`
- [Server clock](https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go): runtime boundary · Current hour and time zone select the greeting period. · `main.go`
- [Greeting JSON](https://github.com/inwerejosic/go-for-trivy-test/blob/main/main.go): HTTP response · Returns the selected greeting and name. · `main.go`
- [Go module + Gin](https://github.com/inwerejosic/go-for-trivy-test/blob/main/go.mod): dependency manifest · Defines Gin and dependency integrity. · `go.mod`

### Container Delivery

- [Docker image build](https://github.com/inwerejosic/go-for-trivy-test/blob/main/Dockerfile): container definition · Packages the Go API for port 8080. · `Dockerfile`
- [Running API container](https://github.com/inwerejosic/go-for-trivy-test/blob/main/Dockerfile): Docker runtime · Exposes the Gin listener on port 8080. · `Dockerfile`

### CI Validation

- [GitHub Actions](https://github.com/inwerejosic/go-for-trivy-test/blob/main/.github/workflows/docker-build.yaml): CI runner · Runs validation for changes targeting main. · `.github/workflows/docker-build.yaml`
- [Endpoint verification](https://github.com/inwerejosic/go-for-trivy-test/blob/main/.github/workflows/docker-build.yaml): CI runtime test · Exercises the running container API endpoints. · `.github/workflows/docker-build.yaml`
- [Trivy image scan](https://github.com/inwerejosic/go-for-trivy-test/blob/main/.github/workflows/docker-build.yaml): security gate · HIGH or CRITICAL findings fail CI. · `.github/workflows/docker-build.yaml`

### Other components

- **API client**: external caller

## Connections

- API client → Running API container: port 8080
- Running API container → Gin router: serves
- Gin router → GET /ping: GET /ping
- Gin router → POST /greet: POST /greet
- POST /greet → Greeting request: binds JSON
- POST /greet → Server clock: reads current time
- Server clock → Greeting JSON: selects period
- Greeting request → Greeting JSON: supplies name
- Go module + Gin → Gin router: provides framework
- Docker image build → Running API container: builds image
- GitHub Actions → Docker image build: builds
- GitHub Actions → Running API container: runs
- GitHub Actions → Endpoint verification: executes
- Endpoint verification → Running API container: calls endpoints
- GitHub Actions → Trivy image scan: scans image
- Trivy image scan → Docker image build: gates image