apirunner

This is CLI program which can call Rest APIs n number of times based on the Count specified in the input file. Its written in Rust.

How to use

1. You can do cargo build and cargo run input.json seq
2. CMD usage is apirunner.exe file_path_of_json [mode] where mode can be seq or par and sqs
3. Use seq for Sequential requests to your target API. Use par for making Parallel HTTP API requests.
4. Use sqs when you want to make sqs requests like send and receive message etc to AWS SQS.

For sqs, you first need to create this file in /User/.aws/credentials. Put the following content in it

[default]
aws_access_key_id=dfgsd
aws_secret_access_key=sdtw3et423t2345
region=us-east-2

Input file

Check the input.json I provided in the repo.

{
   "iterate_times": 100, // How many API calls you want to make
   "parallel_request_response_wait_time": 20, //How long are you willing to wait for responses. Only applicable for mode `par`
   "url": "https://reqres.in/api/users", // Your target API
   "method": "POST", //Method to use 
   "headers": {}, // You can pass many custom headers as a JSON object.
   "body": {      // Your JSON body. Sorry, I made it to work with JSON only.
       "name": "morpheus",
       "job": "leader"
    },
    "aws_details": {
        "action": "send", // this can be either send or receive.
        "region": "us-east-2",
        "access_key": "optional", //Not needed. You already provided this via .aws/credentials
        "secret_key": "optional", //Not needed. You already provided this via .aws/credentials
        "service": "sqs",
        "path": "optional", //Not needed.
        "max_receive_messages": 10, // use this for receive only
        "url": "https://sqs.us-east-2.amazonaws.com"
    }
}

Benchmarking

• mode par is 1000X faster than seq. I was able to make 1K POST requests under 46.5 milliseconds for the above JSON provided.
• If you go beyond 15K requests your local machine will run out of ports to dispatch.

Invitation to contribute

If you think this program can do better, please be my guest and provide your valuable suggestions or changes. I don't see any reason to have this as a Library because main.rs is too business specific for my need, and hence I made this an executable instead. Thanks in advance.