Weather API diagrams

Weather API

Start with how the application begins, then follow data between its folders. Open an operation to see its decisions, calls, failures and cleanup. Its explanation supplies the exact contract and linked dependencies.

This view includes 2 application source files. Package and interface boundaries show checked contracts; their runtime implementations are not expanded. The views describe the checked program, not desired requirements or a recorded execution.

Where execution begins

HTTP configuration

Listen on 127.0.0.1. Limit request bodies to 1048576 bytes and buffered responses to 4194304 bytes. Serve OpenAPI at /openapi.json and API docs at /docs.

Startup

It serves weatherForecast on port 8787. source

Data flow

100%

Mermaid source

flowchart TD
    n0["HTTP requests"]
    n1["forecasts"]
    n0 -->|"GET /weatherforecast → list of WeatherForecast"| n1

Follow the data

Each row opens the complete operations and call sites behind one pair of logical units. A grouped arrow records calls between those units; connected arrows need not belong to the same execution path.

From	To	Operations	Read
HTTP requests	forecasts	1	Inputs, results and call sites

Data crossing these boundaries (1 contracts)

HTTP requests → forecasts

1 operation, 1 site

GET /weatherforecast · HTTP endpoint

No caller-supplied inputs. Result: List<WeatherForecast>.

Caller or entry	Evidence
HTTP requests	Declaration · Caller explanation

Open a module

Module	Read
forecasts.aug	Flow and sequences · Explanation
main.aug	Flow and sequences · Explanation

These are static call boundaries, not a request trace. Interface implementations and foreign internals stop at their checked contracts. Dotted arrows defer a callback or browser action. Imports alone do not imply a call.

HTTP APIs

API	Operation
GET /weatherforecast	weatherForecast