Xbase++
Xbase++
EC2 Check Instance Status
See more Amazon EC2 Examples
Demonstrates how to send a request to check the status of Amazon EC2 instances.Chilkat Xbase++ Downloads
LOCAL nSuccess
LOCAL oRest
LOCAL nBTls
LOCAL nPort
LOCAL nBAutoReconnect
LOCAL oAuthAws
LOCAL cResponseXml
LOCAL oXml
nSuccess := 0
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
oRest := CreateObject("Chilkat.Rest")
// Connect to the Amazon AWS server.
// such as https://ec2.amazonaws.com/
nBTls := 1
nPort := 443
nBAutoReconnect := 1
nSuccess := oRest:Connect("ec2.us-west-2.amazonaws.com", nPort, nBTls, nBAutoReconnect)
// Provide AWS credentials for the REST call.
oAuthAws := CreateObject("Chilkat.AuthAws")
oAuthAws:AccessKey := "AWS_ACCESS_KEY"
oAuthAws:SecretKey := "AWS_SECRET_KEY"
// the region should match the region part of the domain passed to the REST connect method (above).
oAuthAws:Region := "us-west-2"
oAuthAws:ServiceName := "ec2"
oRest:SetAuthAws(oAuthAws)
oRest:AddQueryParam("Action", "DescribeInstanceStatus")
oRest:AddQueryParam("Version", "2016-11-15")
oRest:AddQueryParam("InstanceId.1", "i-999719995399c9999")
// If you have additional instances to check, then add them with .2, .3, etc.
oRest:AddQueryParam("InstanceId.2", "i-999719995399c0000")
oRest:AddQueryParam("InstanceId.3", "i-999719995399c0111")
// ...
// Instead of checking specific instances, you can check all instances by
// sending the IncludeAllInstances param
oRest:AddQueryParam("IncludeAllInstances", "true")
cResponseXml := oRest:FullRequestNoBody("GET", "/")
IF (oRest:LastMethodSuccess != 1)
? oRest:LastErrorText
oRest:destroy()
oAuthAws:destroy()
RETURN
ENDIF
// A successful response will have a status code equal to 200.
IF (oRest:ResponseStatusCode != 200)
? "response status code = " + Str(oRest:ResponseStatusCode)
? "response status text = " + oRest:ResponseStatusText
? "response header: " + oRest:ResponseHeader
? "response body: " + cResponseXml
oRest:destroy()
oAuthAws:destroy()
RETURN
ENDIF
// Examine the successful XML response.
oXml := CreateObject("Chilkat.Xml")
oXml:LoadXml(cResponseXml)
? oXml: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>
oRest:destroy()
oAuthAws:destroy()
oXml:destroy()