sigsci-module-golang

The Signal Sciences module in Golang allows for integrating your Golang application directly with the Signal Sciences agent at the source code level. It is written as a http.Handler wrapper. To integrate your application with the module, you will need to wrap your existing handler with the module handler.

🚨 NOTICE 🚨

Effective May 17th 2021 the default branch will change from master to main. Run the following commands to update a local clone:

git branch -m master main
git fetch origin
git branch -u origin/main main
git remote set-head origin -a

Installation

go get github.com/signalsciences/sigsci-module-golang@latest

Example Code Snippet

// Example existing http.Handler
mux := http.NewServeMux()
mux.HandleFunc("/", helloworld)

// Wrap the existing http.Handler with the SigSci module handler
wrapped, err := sigsci.NewModule(
    // Existing handler to wrap
    mux,

    // Any additional module options:
    //sigsci.Socket("unix", "/var/run/sigsci.sock"),
    //sigsci.Timeout(100 * time.Millisecond),
    //sigsci.AnomalySize(512 * 1024),
    //sigsci.AnomalyDuration(1 * time.Second),
    //sigsci.MaxContentLength(100000),
)
if err != nil {
    log.Fatal(err)
}

// Listen and Serve as usual using the wrapped sigsci handler
s := &http.Server{
    Handler: wrapped,
    Addr:    "localhost:8000",
}
log.Fatal(s.ListenAndServe())

Examples

The examples/helloworld directory contains complete example code.

To run the simple helloworld example:

# Syntax:
#   go run ./examples/helloworld <listener-address:port> [<sigsci-agent-rpc-address>]
#
# Run WITHOUT sigsci enabled
go run ./examples/helloworld localhost:8000
# Run WITH sigsci-agent listening via a UNIX Domain socket file
go run ./examples/helloworld localhost:8000 /var/run/sigsci.sock
# Run WITH sigsci-agent listening via a TCP address:port
go run ./examples/helloworld localhost:8000 localhost:9999

The above will run a HTTP listener on localhost:8000, which will send any traffic to this listener to a running sigsci-agent for inspection (if an agent address is configured).