io.ebean.EbeanVersion Maven / Gradle / Ivy
package io.ebean;
import io.avaje.applog.AppLog;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.LineNumberReader;
import java.util.Properties;
import static java.lang.System.Logger.Level.*;
/**
* Class to determine the ebean version.
*
* @author Roland Praml, FOCONIS AG
*/
public final class EbeanVersion {
public static final System.Logger log = AppLog.getLogger("io.ebean");
/**
* Maintain the minimum ebean-agent version manually based on required ebean-agent bug fixes.
*/
private static final int MIN_AGENT_MAJOR_VERSION = 12;
private static final int MIN_AGENT_MINOR_VERSION = 12;
private static String version = "unknown";
static {
readVersion();
checkAgentVersion();
}
private static void readVersion() {
try {
try (InputStream in = ClassLoader.getSystemResourceAsStream("META-INF/ebean-maven-version.txt")) {
if (in != null) {
try (LineNumberReader reader = new LineNumberReader(new InputStreamReader(in))) {
version = reader.readLine();
log.log(INFO, "ebean version: {0}", version);
}
}
}
} catch (IOException e) {
log.log(WARNING, "Could not determine ebean version: {0}", e.getMessage());
}
}
private static void checkAgentVersion() {
try {
try (InputStream in = ClassLoader.getSystemResourceAsStream("META-INF/maven/io.ebean/ebean-agent/pom.properties")) {
// often we only have ebean-agent during development (with build time enhancement), null is expected
if (in != null) {
String agentVersion = readVersion(in);
if (agentVersion != null) {
if (checkMinAgentVersion(agentVersion)) {
log.log(ERROR, "Expected minimum ebean-agent version {0}.{1}.0 but we have {2}, please update the ebean-agent", MIN_AGENT_MAJOR_VERSION, MIN_AGENT_MINOR_VERSION, agentVersion);
}
}
}
}
} catch (IOException e) {
log.log(WARNING, "Could not check minimum ebean-agent version {0}.{1}.0 required due to - {2}", MIN_AGENT_MAJOR_VERSION, MIN_AGENT_MINOR_VERSION, e.getMessage());
}
}
/**
* Return true if ebean-agent is NOT at our minimum version.
*/
static boolean checkMinAgentVersion(String agentVersion) {
String[] versionSegments = agentVersion.split("\\.");
if (versionSegments.length != 3) {
return true;
} else {
int major = Integer.parseInt(versionSegments[0]);
int minor = Integer.parseInt(versionSegments[1]);
if (major < MIN_AGENT_MAJOR_VERSION) {
return true;
} else {
return major == MIN_AGENT_MAJOR_VERSION && minor < MIN_AGENT_MINOR_VERSION;
}
}
}
private static String readVersion(InputStream in) throws IOException {
Properties prop = new Properties();
prop.load(in);
in.close();
return prop.getProperty("version");
}
private EbeanVersion() {
// hide
}
/**
* Returns the ebean version (read from META-INF/ebean-maven-version.txt)
*/
public static String getVersion() {
return version;
}
}
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