Zig
Zig
EC2 Check Instance Status
See more Amazon EC2 Examples
Demonstrates how to send a request to check the status of Amazon EC2 instances.Chilkat Zig Downloads
const std = @import("std");
const chilkat = @import("chilkat");
pub fn main(init: std.process.Init) !void {
const alloc = init.arena.allocator();
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
const rest = try chilkat.Rest.init();
defer rest.deinit();
// Connect to the Amazon AWS server.
// such as https://ec2.amazonaws.com/
const b_tls = true;
const port = 443;
const b_auto_reconnect = true;
try rest.connect("ec2.us-west-2.amazonaws.com", port, b_tls, b_auto_reconnect);
// Provide AWS credentials for the REST call.
const auth_aws = try chilkat.AuthAws.init();
defer auth_aws.deinit();
auth_aws.setAccessKey("AWS_ACCESS_KEY");
auth_aws.setSecretKey("AWS_SECRET_KEY");
// the region should match the region part of the domain passed to the REST connect method (above).
auth_aws.setRegion("us-west-2");
auth_aws.setServiceName("ec2");
rest.setAuthAws(auth_aws) catch {};
rest.addQueryParam("Action", "DescribeInstanceStatus") catch {};
rest.addQueryParam("Version", "2016-11-15") catch {};
rest.addQueryParam("InstanceId.1", "i-999719995399c9999") catch {};
// If you have additional instances to check, then add them with .2, .3, etc.
rest.addQueryParam("InstanceId.2", "i-999719995399c0000") catch {};
rest.addQueryParam("InstanceId.3", "i-999719995399c0111") catch {};
// ...
// Instead of checking specific instances, you can check all instances by
// sending the IncludeAllInstances param
rest.addQueryParam("IncludeAllInstances", "true") catch {};
const response_xml = rest.fullRequestNoBody(alloc, "GET", "/") catch {
std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
return;
};
// A successful response will have a status code equal to 200.
if (rest.getResponseStatusCode() != 200) {
std.debug.print("response status code = {d}\n", .{rest.getResponseStatusCode()});
std.debug.print("response status text = {s}\n", .{try rest.getResponseStatusText(alloc)});
std.debug.print("response header: {s}\n", .{try rest.getResponseHeader(alloc)});
std.debug.print("response body: {s}\n", .{response_xml});
return;
}
// Examine the successful XML response.
const xml = try chilkat.Xml.init();
defer xml.deinit();
xml.loadXml(response_xml) catch {};
std.debug.print("{s}\n", .{try xml.getXml(alloc)});
// 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>
}