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Refactor UUID generator. Add uuid-property to serverConfig (#57)

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Co-authored-by: Roland Praml <roland.praml@foconis.de>
This commit is contained in:
Roland Praml
2022-01-26 11:46:02 +01:00
committed by GitHub
co-authored by Roland Praml
parent d5ebb3e194
commit 263757aa86
4 changed files with 290 additions and 62 deletions
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ebean-api/src/main/java/io/ebean/config/DatabaseConfig.java
+42
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@@ -377,6 +377,33 @@ public class DatabaseConfig {
*/
private String uuidStateFile;
/**
* The node id (=mac address) for Version 1 UUIDs. There are several options:
* <ul>
* <li><code>null</code> (default) The generator tries to get the hardwarwe MAC
* address. If this fails, it will fall back to 'generate' mode.</li>
* <li><code>"generate"</code> Hardware detection is skipped. It generates a
* random identifier and tries to persist this to the state file. This nodeId
* will be reused on next start. If persisting to the state file will fail also,
* it will fall back to 'random' mode.<br>
* This mode is good, if the MAC address is not reliable, e.g. if you run
* multiple ebean instances on the same machine.</li>
* <li><code>"random"</code> In this mode, a random node id is generated on each
* start. No stateFile is used. it will generate a new nodeId on each
* application start.<br>
* This mode is good, if you have no write access to save the state file.</li>
* <li><code>"xx-xx-xx-xx-xx-xx"</code> When an explicit nodeId is specified,
* this one is used.</li>
* </ul>
* Note: It is possible that multiple servers are sharing the same state file as
* long as they are in the <b>same</b> JVM/ClassLoader scope. In this case it is
* recommended to use the same uuidNodeId configuration.
*
* If you have multiple servers in different JVMs, do <b>not</b> share the state
* files!
*/
private String uuidNodeId;
/**
* The clock used for setting the timestamps (e.g. @UpdatedTimestamp) on objects.
*/
@@ -2050,6 +2077,20 @@ public class DatabaseConfig {
public void setUuidStateFile(String uuidStateFile) {
this.uuidStateFile = uuidStateFile;
}
/**
* Returns the V1-UUID-NodeId
*/
public String getUuidNodeId() {
return uuidNodeId;
}
/**
* Sets the V1-UUID-NodeId.
*/
public void setUuidNodeId(String uuidNodeId) {
this.uuidNodeId = uuidNodeId;
}
/**
* Return true if LocalTime should be persisted with nanos precision.
@@ -2930,6 +2971,7 @@ public class DatabaseConfig {
uuidVersion = p.getEnum(UuidVersion.class, "uuidVersion", uuidVersion);
uuidStateFile = p.get("uuidStateFile", uuidStateFile);
uuidNodeId = p.get("uuidNodeId", uuidNodeId);
localTimeWithNanos = p.getBoolean("localTimeWithNanos", localTimeWithNanos);
jodaLocalTimeMode = p.get("jodaLocalTimeMode", jodaLocalTimeMode);