Example 1 First Request and Response

Example 1: First Request And Response

Goal

Understand the smallest useful public GraphK flow.

Scenario

You have one incoming value and you want one response. You do not need branching, policy, or a complex architecture yet. You only want to see the session enter the graph and the response come back out.

Example

import graphk


pipeline = graphk.SequencePipe(nodes=[graphk.demo.EchoNode()])
program = graphk.Program({"echo": pipeline})
emitter = graphk.Emitter(program)

emitter.request("echo", graphk.Session(value=5))

print(emitter.response())

What Happens?

• the program stores the pipeline under echo
• the emitter resolves echo
• a transient runner executes the pipeline
• EchoNode reads value
• EchoNode writes a response payload
• emitter.response() returns that payload from the cached session

Why This Example Matters

This is the simplest complete GraphK story:

• architecture
• program registration
• runtime state
• execution
• final response

Run The Full Example

• examples/example_1.py