Based on code from https://github.com/bryanstephens/go-eureka-client .
import (
"github.com/theovassiliou/go-eureka-client/eureka"
)
func main() {
client := eureka.NewClient([]string{
"http://127.0.0.1:8761/eureka", //From a spring boot based eureka server
// add others servers here
})
instance := eureka.NewInstanceInfo("test.com", "test", "69.172.200.235", 80, 30, false) //Create a new instance to register
instance.Metadata = &eureka.MetaData{
Map: make(map[string]string),
}
instance.Metadata.Map["foo"] = "bar" //add metadata for example
client.RegisterInstance("myapp", instance) // Register new instance in your eureka(s)
applications, _ := client.GetApplications() // Retrieves all applications from eureka server(s)
client.GetApplication(instance.App) // retrieve the application "test"
client.GetInstance(instance.App, instance.HostName) // retrieve the instance from "test.com" inside "test"" app
client.SendHeartbeat(instance.App, instance.HostName) // say to eureka that your app is alive (here you must send heartbeat before 30 sec)
}Note:
appIdhere is the name of the appinstanceIdis the hostname of the app- When calling
RegisterInstancetheappIdis needed but not used by eureka, this is not the appId but a whatever value
All these strange behaviour come from Eureka.
You can create from a json file with this form (here we called it config.json):
{
"config": {
"certFile": "",
"keyFile": "",
"caCertFiles": null,
"timeout": 1000000000,
"consistency": ""
},
"cluster": {
"leader": "http://127.0.0.1:8761/eureka",
"machines": [
"http://127.0.0.1:8761/eureka"
]
}
}And to load it:
client := NewClientFromFile("config.json")
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