/**
* Create the JVM information
*
* @return
*/
private JsonValue getJVMInformation() {
JsonObject report = JsonValueBuilder.jsonValue();
// Arguments
List<String> arguments = runtimeMxBean.getInputArguments();
JsonArray argumentsJson = report.array(JVM_ARGUMENTS_LABEL);
for (String argument : arguments) {
argumentsJson.add(argument);
}
// some useful jvm properties
JsonObject propertiesJson = JsonValueBuilder.jsonValue();
propertiesJson.put("java.vm.info", System.getProperty("java.vm.info"));
propertiesJson.put("java.vm.name", System.getProperty("java.vm.info"));
propertiesJson.put(
"java.vm.specification.name", System.getProperty("java.vm.specification.name"));
propertiesJson.put(
"java.vm.specification.vendor", System.getProperty("java.vm.specification.vendor"));
propertiesJson.put(
"java.vm.specification.version", System.getProperty("java.vm.specification.version"));
propertiesJson.put("java.vm.vendor", System.getProperty("java.vm.vendor"));
propertiesJson.put("java.vm.version", System.getProperty("java.vm.version"));
report.put(JVM_PROPERTIES_LABEL, propertiesJson.build().asMap());
report.put(JVM_JAVA_VERSION_LABEL, System.getProperty("java.version"));
// Memory
JsonObject memoryJson = JsonValueBuilder.jsonValue();
memoryJson.put(JVM_UNIT_MEMORY_LABEL, FileSizeUnit.MB);
// Getting the runtime reference from system
Runtime runtime = Runtime.getRuntime();
// Print used memory
memoryJson.put(
JVM_USED_MEMORY_LABEL, FileSizeUnit.B.toMB(runtime.totalMemory() - runtime.freeMemory()));
// Print free memory
memoryJson.put(JVM_FREE_MEMORY_LABEL, FileSizeUnit.B.toMB(runtime.freeMemory()));
// Print total available memory
memoryJson.put(JVM_TOTAL_MEMORY_LABEL, FileSizeUnit.B.toMB(runtime.totalMemory()));
// Print Maximum available memory
memoryJson.put(JVM_MAX_MEMORY_LABEL, FileSizeUnit.B.toMB(runtime.maxMemory()));
// GNU systems don't support the "sun.arch.data.model" property, so we print both
memoryJson.put(JVM_BIT_SIZE_GNU_LABEL, System.getProperty("sun.arch.data.model"));
memoryJson.put(JVM_BIT_SIZE_LABEL, System.getProperty("os.arch"));
report.put(JVM_MEMORY_LABEL, memoryJson.build().asMap());
return report.build();
}
