petrov-mg commented on code in PR #13440:
URL: https://github.com/apache/ignite/pull/13440#discussion_r3745411191
##########
modules/core/src/main/java/org/apache/ignite/internal/managers/deployment/GridDeploymentManager.java:
##########
@@ -402,6 +404,76 @@ private GridDeployment checkDeployment(GridDeployment
deployment, String store)
return locStore.getDeployment(meta);
}
+ /**
+ * Resolves the class loader the classes of a message must be read with.
Blocks when the deployment has to be
+ * requested from its owner, so it must not be called from a
socket-reading thread.
+ *
+ * @param msg Message carrying its own deployment.
+ * @return Class loader of the carried deployment, or the local one if the
message carries none.
+ * @throws IgniteDeploymentCheckedException If the deployment cannot be
obtained.
+ */
+ public ClassLoader classLoader(DeploymentAware msg) throws
IgniteDeploymentCheckedException {
+ return classLoader(msg.deploymentInfo(), msg.deployedClassName());
+ }
+
+ /**
+ * Resolves the class loader classes described by {@code depInfo} must be
read with. Blocks when the deployment has
+ * to be requested from its owner, so it must not be called from a
socket-reading thread.
+ *
+ * @param depInfo Deployment of the classes, or {@code null} when they
carry none.
+ * @param clsName Name of a class the deployment must be able to load.
+ * @return Class loader of the deployment, or the local one when there is
no deployment.
+ * @throws IgniteDeploymentCheckedException If the deployment cannot be
obtained.
+ */
+ public ClassLoader classLoader(@Nullable GridDeploymentInfo depInfo,
String clsName)
+ throws IgniteDeploymentCheckedException {
+ if (depInfo == null)
+ return U.resolveClassLoader(ctx.config());
+
+ return U.resolveClassLoader(globalDeployment(depInfo,
clsName).classLoader(), ctx.config());
+ }
+
+ /**
+ * Resolves the deployment {@code depInfo} describes, for the classes of
{@code clsName}. The sender of those
+ * classes is the node that created the class loader, or a participant
when the deployment has any.
+ *
+ * @param depInfo Deployment of the classes, as it came with the message
carrying them.
+ * @param clsName Name of a class the deployment must be able to load.
+ * @return The deployment the classes are loaded with.
+ * @throws IgniteDeploymentCheckedException If the deployment is gone or
peer class loading is off.
+ */
+ public GridDeployment globalDeployment(GridDeploymentInfo depInfo, String
clsName)
+ throws IgniteDeploymentCheckedException {
+ GridDeployment dep = globalDeployment(depInfo, clsName, clsName);
+
+ if (dep == null) {
+ throw new IgniteDeploymentCheckedException("Failed to obtain
deployment for class (is peer class " +
+ "loading turned on?): " + clsName);
+ }
+
+ return dep;
+ }
+
+ /**
+ * Resolves the deployment {@code depInfo} describes, as {@link
#globalDeployment(GridDeploymentInfo, String)}
+ * does, but under {@code rsrcName} (a task may be deployed under a name
of its own) and returns {@code null}
+ * instead of throwing, for callers that have somewhere else to look.
+ *
+ * @param depInfo Deployment of the classes, as it came with the message
carrying them.
+ * @param rsrcName Name the classes are deployed under.
+ * @param clsName Name of a class the deployment must be able to load.
+ * @return The deployment, or {@code null} when there is none.
+ */
+ @Nullable public GridDeployment globalDeployment(GridDeploymentInfo
depInfo, String rsrcName, String clsName) {
+ return getGlobalDeployment(depInfo.deployMode(),
+ rsrcName,
+ clsName,
+ depInfo.userVersion(),
Review Comment:
Is `depInfo` guaranteed to be non-null here? In some places it seems that it
can be null, for example in
`org.apache.ignite.internal.managers.communication.GridIoUserMessage#deploymentInfo`.
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