Swift
Swift
EC2 Check Instance Status
See more Amazon EC2 Examples
Demonstrates how to send a request to check the status of Amazon EC2 instances.Chilkat Swift Downloads
func chilkatTest() {
var success: Bool = false
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
let rest = CkoRest()!
// Connect to the Amazon AWS server.
// such as https://ec2.amazonaws.com/
var bTls: Bool = true
var port: Int = 443
var bAutoReconnect: Bool = true
success = rest.connect(hostname: "ec2.us-west-2.amazonaws.com", port: port, tls: bTls, autoReconnect: bAutoReconnect)
// Provide AWS credentials for the REST call.
let authAws = CkoAuthAws()!
authAws.accessKey = "AWS_ACCESS_KEY"
authAws.secretKey = "AWS_SECRET_KEY"
// the region should match the region part of the domain passed to the REST connect method (above).
authAws.region = "us-west-2"
authAws.serviceName = "ec2"
rest.setAuthAws(authProvider: authAws)
rest.addQueryParam(name: "Action", value: "DescribeInstanceStatus")
rest.addQueryParam(name: "Version", value: "2016-11-15")
rest.addQueryParam(name: "InstanceId.1", value: "i-999719995399c9999")
// If you have additional instances to check, then add them with .2, .3, etc.
rest.addQueryParam(name: "InstanceId.2", value: "i-999719995399c0000")
rest.addQueryParam(name: "InstanceId.3", value: "i-999719995399c0111")
// ...
// Instead of checking specific instances, you can check all instances by
// sending the IncludeAllInstances param
rest.addQueryParam(name: "IncludeAllInstances", value: "true")
var responseXml: String? = rest.fullRequestNoBody(httpVerb: "GET", uriPath: "/")
if rest.lastMethodSuccess != true {
print("\(rest.lastErrorText!)")
return
}
// A successful response will have a status code equal to 200.
if rest.responseStatusCode.intValue != 200 {
print("response status code = \(rest.responseStatusCode.intValue)")
print("response status text = \(rest.responseStatusText!)")
print("response header: \(rest.responseHeader!)")
print("response body: \(responseXml!)")
return
}
// Examine the successful XML response.
let xml = CkoXml()!
xml.load(xmlData: responseXml)
print("\(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>
}