feature: generate json body from external command (#77)

CHANGELOG.md

@@ -1,3 +1,7 @@
+# v0.2.0 - 2023-07-30
+
+build json request body from external command.
+
 # v0.1.12 - 2023-07-30
 
 update dependency and slim docker images.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rsb"
-version = "0.1.12"
+version = "0.2.0"
 edition = "2021"
 authors = ["MichaelFu <[email protected]>"]
 license = "MIT"
@@ -34,6 +34,7 @@ serde = {version = "1.0.164", features = ["derive"]}
 colored = "2.0.4"
 concolor-clap = "0.1.0"
 rlimit = "0.9.1"
+async-process = "1.7.0"
 
 [target.'cfg(unix)'.dependencies]
 openssl = { version = "0.10", features = ["vendored"] }

README.md

@@ -3,7 +3,7 @@
 [![Build Status](https://github.com/gamelife1314/rsb/workflows/CI/badge.svg)](https://github.com/gamelife1314/rsb/actions)
 [![License MIT](https://img.shields.io/badge/liccense-MIT-green?style=flat&logo=PowerShell)](https://github.com/gamelife1314/rsb/blob/main/LICENSE)
 [![Codecov](https://codecov.io/gh/gamelife1314/rsb/branch/main/graph/badge.svg)](https://app.codecov.io/gh/gamelife1314/rsb)
-[![Crates.io](https://img.shields.io/badge/crates.io-v0.1.12-blue)](https://crates.io/crates/rsb)
+[![Crates.io](https://img.shields.io/badge/crates.io-v0.2.0-blue)](https://crates.io/crates/rsb)
 
 `rsb` is a http server benchmark tool written in rust. The development of this tool is mainly inspired 
 by the [`bombardier`](https://github.com/codesenberg/bombardier) project, and I would like to thank the author for his 
@@ -105,6 +105,9 @@ example:
     rsb -n 1 -m POST --json-body '{"version":"v0.1.0","name":"rsb"}' http://127.0.0.1:54326/post-json
     // or
     rsb -n 1 -m POST --json-file json.txt http://127.0.0.1:54326/post-json
+    // or build json body from external command, this will call rsbg program to generate request body
+    cargo run -- -c 50 -t 5s -n 5000 -l --json-command "rsbg hello world xxx 1" -m POST  http://127.0.0.1:5302/hello
+
 
 ## FORM BODY