/**
* Copyright 2013 Netflix, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.netflix.servo.publish.cloudwatch;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.cloudwatch.AmazonCloudWatch;
import com.amazonaws.services.cloudwatch.AmazonCloudWatchClient;
import com.amazonaws.services.cloudwatch.model.MetricDatum;
import com.amazonaws.services.cloudwatch.model.PutMetricDataRequest;
import java.util.Date;
//CHECKSTYLE.OFF: LineLength
/**
* Test program for exploring the limits for values that can be written to cloudwatch.
*
* <pre>
* ERROR NaN 1024 - com.amazonaws.services.cloudwatch.model.InvalidParameterValueException: The value ? for parameter MetricData.member.1.Value is invalid.
* ERROR -Infinity 1024 - com.amazonaws.services.cloudwatch.model.InvalidParameterValueException: The value -∞ for parameter MetricData.member.1.Value is invalid.
* ERROR Infinity 1024 - com.amazonaws.services.cloudwatch.model.InvalidParameterValueException: The value ∞ for parameter MetricData.member.1.Value is invalid.
* ERROR 4.900000e-324 -1023 - com.amazonaws.services.cloudwatch.model.InvalidParameterValueException: The value 0 for parameter MetricData.member.1.Value is invalid.
* ERROR 1.797693e+308 1023 - com.amazonaws.services.cloudwatch.model.InvalidParameterValueException: The value 179,769,313,486,231,570,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 for parameter MetricData.member.1.Value is invalid.
* ERROR 4.697085e+108 361 - com.amazonaws.services.cloudwatch.model.InvalidParameterValueException: The value 4,697,085,165,547,666,500,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 for parameter MetricData.member.1.Value is invalid.
* ERROR 2.128980e-109 -361 - com.amazonaws.services.cloudwatch.model.InvalidParameterValueException: The value 0 for parameter MetricData.member.1.Value is invalid.
* ERROR -4.697085e+108 361 - com.amazonaws.services.cloudwatch.model.InvalidParameterValueException: The value -4,697,085,165,547,666,500,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 for parameter MetricData.member.1.Value is invalid.
* ERROR -2.128980e-109 -361 - com.amazonaws.services.cloudwatch.model.InvalidParameterValueException: The value -0 for parameter MetricData.member.1.Value is invalid.
* </pre>
*/
//CHECKSTYLE.ON: LineLength
final class CloudWatchValueTest {
private CloudWatchValueTest() {
}
private static final String ACCESS_KEY = "";
private static final String SECRET_KEY = "";
private static final AWSCredentials CREDENTIALS = new BasicAWSCredentials(ACCESS_KEY,
SECRET_KEY);
private static final AmazonCloudWatch CLIENT = new AmazonCloudWatchClient(CREDENTIALS);
private static final double[] SPECIAL_VALUES = {
Double.NaN,
Double.NEGATIVE_INFINITY,
Double.POSITIVE_INFINITY,
Double.MIN_VALUE,
Double.MAX_VALUE,
Math.pow(2.0, 360),
-Math.pow(2.0, 360),
0.0,
1.0,
-1.0
};
private static double[] getValues(double start, double multiplier, int n) {
double[] values = new double[n];
values[0] = start;
for (int i = 1; i < n; ++i) {
values[i] = values[i - 1] * multiplier;
}
return values;
}
private static boolean putValue(String name, long timestamp, double value) {
Date d = new Date(timestamp);
MetricDatum m = new MetricDatum().withMetricName(name).withTimestamp(d).withValue(value);
PutMetricDataRequest req = new PutMetricDataRequest().withNamespace("TEST")
.withMetricData(m);
try {
CLIENT.putMetricData(req);
return true;
} catch (Exception e) {
System.out.printf("ERROR %e %d - %s: %s%n",
value, Math.getExponent(value), e.getClass().getName(), e.getMessage());
return false;
}
}
private static void putValues(String name, long start, double[] values,
boolean ignoreFailures) {
long t = start;
boolean succeeded = true;
for (int i = 0; (succeeded || ignoreFailures) && i < values.length; ++i, t += 60000) {
succeeded = putValue(name, t, values[i]);
}
}
public static void main(String[] args) throws Exception {
if (args.length != 1) {
System.err.println("Usage: cwtest <test-name>");
System.exit(1);
}
long start = System.currentTimeMillis() - (1000 * 60 * 1000);
double[] posLargeValues = getValues(1.0, 2.0, 500);
double[] posSmallValues = getValues(1.0, 0.5, 500);
double[] negLargeValues = getValues(-1.0, 2.0, 500);
double[] negSmallValues = getValues(-1.0, 0.5, 500);
putValues(args[0] + "_special", start, SPECIAL_VALUES, true);
putValues(args[0] + "_pos_large", start, posLargeValues, false);
putValues(args[0] + "_pos_small", start, posSmallValues, false);
putValues(args[0] + "_neg_large", start, negLargeValues, false);
putValues(args[0] + "_neg_small", start, negSmallValues, false);
}
}