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(Unicode C++) 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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#include <CkRestW.h>
#include <CkAuthAwsW.h>
#include <CkXmlW.h>

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

    CkRestW rest;

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

    // Provide AWS credentials for the REST call.
    CkAuthAwsW authAws;
    authAws.put_AccessKey(L"AWS_ACCESS_KEY");
    authAws.put_SecretKey(L"AWS_SECRET_KEY");
    // the region should match the region part of the domain passed to the REST connect method (above).
    authAws.put_Region(L"us-west-2");
    authAws.put_ServiceName(L"ec2");

    rest.SetAuthAws(authAws);

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

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

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

    const wchar_t *responseXml = rest.fullRequestNoBody(L"GET",L"/");
    if (rest.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    // A successful response will have a status code equal to 200.
    if (rest.get_ResponseStatusCode() != 200) {
        wprintf(L"response status code = %d\n",rest.get_ResponseStatusCode());
        wprintf(L"response status text = %s\n",rest.responseStatusText());
        wprintf(L"response header: %s\n",rest.responseHeader());
        wprintf(L"response body: %s\n",responseXml);
        return;
    }

    // Examine the successful XML response.
    CkXmlW xml;
    xml.LoadXml(responseXml);
    wprintf(L"%s\n",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>
    }

 

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