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new e2bda73 CAMEL-16353: camel-main - Add @EagerClassloaded to mark
classes which should be eager loaded via camel-main. This optimize to load
these classes before Camel is started and otherwise would load these classes on
first message processed. A maven plugin scans the code and updates the source
code to keep the list of classes to eager loaded automatic up-to-date.
e2bda73 is described below
commit e2bda73c4f80b98fea4a19b7ca5fcc04224ff70e
Author: Claus Ibsen <[email protected]>
AuthorDate: Wed Mar 31 13:54:44 2021 +0200
CAMEL-16353: camel-main - Add @EagerClassloaded to mark classes which
should be eager loaded via camel-main. This optimize to load these classes
before Camel is started and otherwise would load these classes on first message
processed. A maven plugin scans the code and updates the source code to keep
the list of classes to eager loaded automatic up-to-date.
---
.../java/org/apache/camel/spi/annotations/EagerClassloaded.java | 9 +++++++++
.../java/org/apache/camel/spi/annotations/EagerClassloaded.java | 9 +++++++++
2 files changed, 18 insertions(+)
diff --git
a/core/camel-api/src/generated/java/org/apache/camel/spi/annotations/EagerClassloaded.java
b/core/camel-api/src/generated/java/org/apache/camel/spi/annotations/EagerClassloaded.java
index 65246b1..99817ac 100644
---
a/core/camel-api/src/generated/java/org/apache/camel/spi/annotations/EagerClassloaded.java
+++
b/core/camel-api/src/generated/java/org/apache/camel/spi/annotations/EagerClassloaded.java
@@ -25,6 +25,15 @@ import java.lang.annotation.Target;
* Marks this class to be eager loaded by the JDK classloader so the class is
already loaded when Camel is started.
*
* This is intended to assist required classes that Camel always uses.
+ *
+ * <b>Important:</b> The class must have the following static method which
will be invoked to force loading the class.
+ *
+ * <pre>
+ * public static void onClassloaded(org.slf4j.Logger log) {
+ * .. do warmup here such as logging the class name or create inner
classes to force loading them
+ * log.trace("Loaded {}", this.getClass().getName());
+ * }
+ * </pre>
*/
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
diff --git
a/tooling/spi-annotations/src/main/java/org/apache/camel/spi/annotations/EagerClassloaded.java
b/tooling/spi-annotations/src/main/java/org/apache/camel/spi/annotations/EagerClassloaded.java
index 65246b1..99817ac 100644
---
a/tooling/spi-annotations/src/main/java/org/apache/camel/spi/annotations/EagerClassloaded.java
+++
b/tooling/spi-annotations/src/main/java/org/apache/camel/spi/annotations/EagerClassloaded.java
@@ -25,6 +25,15 @@ import java.lang.annotation.Target;
* Marks this class to be eager loaded by the JDK classloader so the class is
already loaded when Camel is started.
*
* This is intended to assist required classes that Camel always uses.
+ *
+ * <b>Important:</b> The class must have the following static method which
will be invoked to force loading the class.
+ *
+ * <pre>
+ * public static void onClassloaded(org.slf4j.Logger log) {
+ * .. do warmup here such as logging the class name or create inner
classes to force loading them
+ * log.trace("Loaded {}", this.getClass().getName());
+ * }
+ * </pre>
*/
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
