(Go) EC2 Check Instance Status

See more Amazon EC2 Examples

Demonstrates how to send a request to check the status of Amazon EC2 instances.

For more information, see https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DescribeInstanceStatus.html

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    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    rest := chilkat.NewRest()

    // Connect to the Amazon AWS server.
    // such as https://ec2.amazonaws.com/
    bTls := true
    port := 443
    bAutoReconnect := true
    success := rest.Connect("ec2.us-west-2.amazonaws.com",port,bTls,bAutoReconnect)

    // Provide AWS credentials for the REST call.
    authAws := chilkat.NewAuthAws()
    authAws.SetAccessKey("AWS_ACCESS_KEY")
    authAws.SetSecretKey("AWS_SECRET_KEY")
    // the region should match the region part of the domain passed to the REST connect method (above).
    authAws.SetRegion("us-west-2")
    authAws.SetServiceName("ec2")

    rest.SetAuthAws(authAws)

    rest.AddQueryParam("Action","DescribeInstanceStatus")
    rest.AddQueryParam("Version","2016-11-15")

    rest.AddQueryParam("InstanceId.1","i-999719995399c9999")
    // If you have additional instances to check, then add them with .2, .3, etc.
    rest.AddQueryParam("InstanceId.2","i-999719995399c0000")
    rest.AddQueryParam("InstanceId.3","i-999719995399c0111")
    // ...

    // Instead of checking specific instances, you can check all instances by 
    // sending the IncludeAllInstances param
    rest.AddQueryParam("IncludeAllInstances","true")

    responseXml := rest.FullRequestNoBody("GET","/")
    if rest.LastMethodSuccess() != true {
        fmt.Println(rest.LastErrorText())
        rest.DisposeRest()
        authAws.DisposeAuthAws()
        return
    }

    // A successful response will have a status code equal to 200.
    if rest.ResponseStatusCode() != 200 {
        fmt.Println("response status code = ", rest.ResponseStatusCode())
        fmt.Println("response status text = ", rest.ResponseStatusText())
        fmt.Println("response header: ", rest.ResponseHeader())
        fmt.Println("response body: ", *responseXml)
        rest.DisposeRest()
        authAws.DisposeAuthAws()
        return
    }

    // Examine the successful XML response.
    xml := chilkat.NewXml()
    xml.LoadXml(*responseXml)
    fmt.Println(*xml.GetXml())

    // Here is a sample response:

    // Use this online tool to generate parsing code from sample XML: 
    // Generate Parsing Code from XML

    // <DescribeInstanceStatusResponse xmlns="http://ec2.amazonaws.com/doc/2016-11-15/">
    //     <requestId>3be1508e-c444-4fef-89cc-0b1223c4f02fEXAMPLE</requestId>
    //     <instanceStatusSet>
    //         <item>
    //             <instanceId>i-1234567890abcdef0</instanceId>
    //             <availabilityZone>us-east-1d</availabilityZone>
    //             <instanceState>
    //                 <code>16</code>
    //                 <name>running</name>
    //             </instanceState>
    //             <systemStatus>
    //                 <status>impaired</status>
    //                 <details>
    //                     <item>
    //                         <name>reachability</name>
    //                         <status>failed</status>
    //                         <impairedSince>YYYY-MM-DDTHH:MM:SS.000Z</impairedSince>
    //                     </item>
    //                 </details>
    //             </systemStatus>
    //             <instanceStatus>
    //                 <status>impaired</status>
    //                 <details>
    //                     <item>
    //                         <name>reachability</name>
    //                         <status>failed</status>
    //                         <impairedSince>YYYY-MM-DDTHH:MM:SS.000Z</impairedSince>
    //                     </item>
    //                 </details>
    //             </instanceStatus>
    //             <eventsSet>
    //               <item>
    //                 <code>instance-retirement</code>
    //                 <description>The instance is running on degraded hardware</description>
    //                 <notBefore>YYYY-MM-DDTHH:MM:SS+0000</notBefore>
    //                 <notAfter>YYYY-MM-DDTHH:MM:SS+0000</notAfter>
    //               </item>
    //             </eventsSet>
    //         </item>
    //         <item>
    //             <instanceId>i-0598c7d356eba48d7</instanceId>
    //             <availabilityZone>us-east-1d</availabilityZone>
    //             <instanceState>
    //                 <code>16</code>
    //                 <name>running</name>
    //             </instanceState>
    //             <systemStatus>
    //                 <status>ok</status>
    //                 <details>
    //                     <item>
    //                         <name>reachability</name>
    //                         <status>passed</status>
    //                     </item>
    //                 </details>
    //             </systemStatus>
    //             <instanceStatus>
    //                 <status>ok</status>
    //                 <details>
    //                     <item>
    //                         <name>reachability</name>
    //                         <status>passed</status>
    //                     </item>
    //                 </details>
    //             </instanceStatus>
    //             <eventsSet>
    //               <item>
    //                 <code>instance-reboot</code>
    //                 <description>The instance is scheduled for a reboot</description>
    //                 <notBefore>YYYY-MM-DDTHH:MM:SS+0000</notBefore>
    //                 <notAfter>YYYY-MM-DDTHH:MM:SS+0000</notAfter>
    //               </item>
    //             </eventsSet>
    //         </item>
    //         <item>
    //             <instanceId>i-0987654321abcdef0</instanceId>
    //             <availabilityZone>us-east-1d</availabilityZone>
    //             <instanceState>
    //                 <code>16</code>
    //                 <name>running</name>
    //             </instanceState>
    //             <systemStatus>
    //                 <status>ok</status>
    //                 <details>
    //                     <item>
    //                         <name>reachability</name>
    //                         <status>passed</status>
    //                     </item>
    //                 </details>
    //             </systemStatus>
    //             <instanceStatus>
    //                 <status>ok</status>
    //                 <details>
    //                     <item>
    //                         <name>reachability</name>
    //                         <status>passed</status>
    //                     </item>
    //                 </details>
    //             </instanceStatus>
    //         </item>
    //         <item>
    //             <instanceId>i-0598c7d356eba48d8</instanceId>
    //             <availabilityZone>us-east-1d</availabilityZone>
    //             <instanceState>
    //                 <code>16</code>
    //                 <name>running</name>
    //             </instanceState>
    //             <systemStatus>
    //                 <status>ok</status>
    //                 <details>
    //                     <item>
    //                         <name>reachability</name>
    //                         <status>passed</status>
    //                     </item>
    //                 </details>
    //             </systemStatus>
    //             <instanceStatus>
    //                 <status>insufficient-data</status>
    //                 <details>
    //                     <item>
    //                         <name>reachability</name>
    //                         <status>insufficient-data</status>
    //                     </item>
    //                 </details>
    //             </instanceStatus>
    //          </item>
    //     </instanceStatusSet>
    // </DescribeInstanceStatusResponse>

    rest.DisposeRest()
    authAws.DisposeAuthAws()
    xml.DisposeXml()