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The ExecutionResult model represents the outcome of a code execution operation. It contains the program output, exit code, and execution time metrics.

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Fields

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output
string
The combined standard output (stdout) and standard error (stderr) from the executed code. This contains all text printed or logged by the program during execution.
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exitCode
int
The exit code from the Docker container execution. Currently, this value is always set to 0 in the implementation, regardless of whether the code compiled or executed successfully. Check the output field for compilation errors or runtime exceptions.
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executionTime
long
The total time taken to execute the code, measured in milliseconds. This includes the time to start the Docker container, run the code, and capture the output.

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Example

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Successful execution

{
  "output": "Hello, World!\n",
  "exitCode": 0,
  "executionTime": 1234
}

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Execution with error

{
  "output": "Traceback (most recent call last):\n  File \"main.py\", line 1, in <module>\n    print(undefined_variable)\nNameError: name 'undefined_variable' is not defined\n",
  "exitCode": 0,
  "executionTime": 856
}

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Java class

This model is defined in the backend as: 
package com.runtime.model;

public class ExecutionResult {
    private String output;
    private int exitCode;
    private long executionTime;

    public ExecutionResult(String output, int exitCode, long executionTime) {
        this.output = output;
        this.exitCode = exitCode;
        this.executionTime = executionTime;
    }

    // Getters and setters
    public String getOutput() { return output; }
    public void setOutput(String output) { this.output = output; }
    
    public int getExitCode() { return exitCode; }
    public void setExitCode(int exitCode) { this.exitCode = exitCode; }
    
    public long getExecutionTime() { return executionTime; }
    public void setExecutionTime(long executionTime) { this.executionTime = executionTime; }
}

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Usage

The ExecutionResult is wrapped in an ApiResponse<ExecutionResult> when returned from the /api/execute endpoint. See the Execute Code endpoint documentation for complete response examples.
The execution time includes container startup overhead. Subsequent executions may be faster due to Docker image caching.

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