com.google.auth.oauth2.MetricsUtils Maven / Gradle / Ivy
/*
* Copyright 2023 Google LLC
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* modification, are permitted provided that the following conditions are
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*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
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* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
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* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.google.auth.oauth2;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
class MetricsUtils {
static final String API_CLIENT_HEADER = "x-goog-api-client";
private static final String authLibraryVersion = getAuthLibraryVersion();
private static final String javaLanguageVersion = System.getProperty("java.version");
/**
* Gets the x-goog-api-client header value for the current Java language version and the auth
* library version.
*
* @return the header value.
*/
static String getLanguageAndAuthLibraryVersions() {
return String.format("gl-java/%s auth/%s", javaLanguageVersion, authLibraryVersion);
}
private static String getAuthLibraryVersion() {
// Attempt to read the library's version from a properties file generated during the build.
// This value should be read and cached for later use.
String version = "unknown-version";
try (InputStream inputStream =
MetricsUtils.class.getResourceAsStream(
"/com/google/auth/oauth2/google-auth-library.properties")) {
if (inputStream != null) {
final Properties properties = new Properties();
properties.load(inputStream);
version = properties.getProperty("google-auth-library.version");
}
} catch (IOException e) {
// Ignore.
}
return version;
}
}