elb_xml.go

package main;

import (
	"bytes"
	"encoding/xml"
	"fmt"
)

var ResponseExample = `
<DescribeInstanceHealthResponse xmlns="http://elasticloadbalancing.amazonaws.com/doc/2012-06-01/">
  <DescribeInstanceHealthResult>
    <InstanceStates>
      <member>
        <Description>N/A</Description>
        <InstanceId>i-5e96b053</InstanceId>
        <State>InService</State>
        <ReasonCode>N/A</ReasonCode>
      </member>
      <member>
        <Description>N/A</Description>
        <InstanceId>i-c5f1ddce</InstanceId>
        <State>InService</State>
        <ReasonCode>N/A</ReasonCode>
      </member>
      <member>
        <Description>N/A</Description>
        <InstanceId>i-e1f7dbea</InstanceId>
        <State>InService</State>
        <ReasonCode>N/A</ReasonCode>
      </member>
    </InstanceStates>
  </DescribeInstanceHealthResult>
  <ResponseMetadata>
    <RequestId>ca6e49db-353d-11e4-92c6-f3a5ea1ffeb7</RequestId>
  </ResponseMetadata>
</DescribeInstanceHealthResponse>`

// This structs result in only 1 InstanceState being parsed out from the
// response body above.
// type InstanceState struct {
// 	InstanceId  string `xml:"member>InstanceId"`
// 	Description string `xml:"member>Description"`
// 	State       string `xml:"member>State"`
// 	ReasonCode  string `xml:"member>ReasonCode"`
// }
// type DescribeInstanceHealthResp struct {
// 	InstanceStates []InstanceState `xml:"DescribeInstanceHealthResult>InstanceStates"`
// 	RequestId      string          `xml:"ResponseMetadata>RequestId"`
// }

// These structs lead to correctly parsing out multiple InstanceStates
// for the response above.
type InstanceState struct {
	InstanceId  string `xml:"InstanceId"`
	Description string `xml:"Description"`
	State       string `xml:"State"`
	ReasonCode  string `xml:"ReasonCode"`
}
type DescribeInstanceHealthResp struct {
	InstanceStates []InstanceState `xml:"DescribeInstanceHealthResult>InstanceStates>member"`
	RequestId      string          `xml:"ResponseMetadata>RequestId"`
}

func main() {
	reader := bytes.NewBufferString(ResponseExample)
	decoder := xml.NewDecoder(reader)
	resp := &DescribeInstanceHealthResp{}
	err := decoder.Decode(resp)
	if err != nil {
		panic(err)
	}
	fmt.Printf("%+v\n", resp)
}