basic_usage

Basic Usage Example

This example demonstrates the basic usage of the steps package by creating and running a DAG (Directed Acyclic Graph) with multiple steps in sequence.

Overview

The example shows:

1. How to create a step using the Step function
2. How to create a DAG (Directed Acyclic Graph) using NewDag()
3. How to add multiple steps to the DAG
4. How to run the DAG with context and data

Key Concepts

• Step Creation: Using the Step function to create steps that perform operations
• DAG Structure: Using NewDag() to create a directed acyclic graph of steps
• Step Addition: Using RunnableAdd() to add steps to the DAG
• Execution: Running the DAG with context and data map

Example Code

Here's a quick overview of the example code:

// Create a new DAG
func NewMultipleIncrementDag() steps.DagInterface {
    dag := steps.NewDag()
    dag.SetName("Multiple Increment DAG")
    
    // Add 4 increment steps
    for i := 0; i < 4; i++ {
        dag.RunnableAdd(NewIncrementStep())
    }
    
    return dag
}

Running the Example

To run this example:

# Run the main program
# This will execute a DAG with 4 increment steps
# The initial value is 0 and it will be incremented 4 times
# The final value should be 4

go run main.go

# Run the tests
# The test verifies that the DAG correctly increments the value 4 times
go test -v

Expected Output

The program will output:

Value: 4