我使用ModelControllerClient获取有关Wildfly服务器上使用的Logger的一些信息。我想列出所有记录器名称。
这是我获取有关记录器的所有信息的方法:
ModelNode op = new ModelNode();
op.get("operation").set("read-resource");
ModelNode address = op.get("address");
address.add("subsystem", "logging");
address.add("logger", "*");
ModelNode result = client.execute(op);
这是我得到的ModelNode结果的一个小例子。
{
"address" => [
("subsystem" => "logging"),
("logger" => "jacorb")
],
"outcome" => "success",
"result" => {
"category" => "jacorb",
"filter" => undefined,
"filter-spec" => undefined,
"handlers" => undefined,
"level" => "WARN",
"use-parent-handlers" => true
}
},
{
"address" => [
("subsystem" => "logging"),
("logger" => "jacorb.config")
],
"outcome" => "success",
"result" => {
"category" => "jacorb.config",
"filter" => undefined,
"filter-spec" => undefined,
"handlers" => undefined,
"level" => "ERROR",
"use-parent-handlers" => true
}
},
我只想获得“logger”/“category”的值。
我试着通过以下方式获取记录器的名称:
result.get("logger");
但它返回“未定义”。我想问题是我有一个叫做“logger”的对象。当我尝试使用“类别”时也会发生同样的情况。
您需要先阅读结果。在简单的情况下,它将是result.get("result", "logger")
。您也可以使用Operations
API并执行类似Operations.readResult(result).get("logger")
的操作。
如果您只想要记录器名称,这是一个例子:
try (ModelControllerClient client = ModelControllerClient.Factory.create("localhost", 9990)) {
final ModelNode address = Operations.createAddress("subsystem", "logging");
final ModelNode op = Operations.createOperation(ClientConstants.READ_CHILDREN_NAMES_OPERATION, address);
op.get(ClientConstants.CHILD_TYPE).set("logger");
final ModelNode result = client.execute(op);
if (Operations.isSuccessfulOutcome(result)) {
final List<ModelNode> loggerNames = Operations.readResult(result).asList();
for (ModelNode loggerName : loggerNames) {
System.out.printf("logger=%s%n", loggerName.asString());
}
} else {
System.err.printf("Failed to get the logger names: %s%n", Operations.getFailureDescription(result).asString());
}
}
如果你想要完整的描述,你可以使用read-children-resource
操作。
此外,WildFly文档还有一个关于using the ModelControllerClient和ModelNode and ModelType API的部分。