Google Java Style Guide Google Java Style Guide 1 Introduction This document serves as the complete definition of Google’s coding standards for source code in the Java™ Programming Language. A Java source case-sensitive name of the top-level class it contains (of which there is exactly one), plus the .java extension. 2.2 File encoding: UTF-8 Source files are encoded in UTF-8. 2.3 Special characters ) 4.3 One statement per line Each statement is followed by a line break. 4.4 Column limit: 100 Java code has a column limit of 100 characters. Except as noted below, any line that would exceed this

Java EE Product Provider Tool Provider Application Component Provider Application Assembler Deployer and System Administrator Sun GlassFish, Oracle BEA WebLogic, IBM WebSphere, JBOSS, Apache files in the Java EE Server. ︎ According to environment, modify and deploy configuration files, then manage Java EE system. ︎ Varify the conformance from structure of EAR files to Java EE standards standards. Component, JAR, WAR ——�A Java EE EAR �� ����������� ����� �� ������Applet��� Web���EJB

Current Microservice Framework 5 Service framework Service Mesh ServiceComb Microservice Solution Java programming (POJO/SpringMVC/J AX-RS) Golang Programming Flow control Load balancing Distributed K8s Interconnection with industry solutions ServiceComb: Open-Stack Microservice Solution • Java Chassis • A high-performance microservice framework that provides functions such as service registration JAXRS, POJO...) Service contract (OpenAPI) Service discovery Running model ServiceComb Java Chassis Architecture Fallbreak Configuration Load balancing Tracing … Development and O&M Based on

microservice engine based on the ServiceComb solution and components such as Mesher and go chassis. - Supports Java and Go programming frameworks and multi-language access. - Supports heterogeneous infrastructure Service Java chassis Service Infrastructure CSE as control plane Configuration center Service center Governance Web Console Monitoring Zipkin Huawei APM Prometheus Grafana Kubernetes Java chassis chassis Service Go chassis Service VM Bare metal CCE ServiceStage API gateway Governance server Embracing the Istio Ecosystem - Provide new possibilities and choices for the Istio data plane by replacing

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (2 GiB) to 2^63 (8 EiB). • Added support for AtomicBoolean, AtomicInteger, and AtomicLong types to Java gateway. • Server-proxy data exchange protocol was optimized to reduce the number of connections some downtime. • From now on, Zabbix internal item zabbix[java„ping] will not become not supported if java gateway is misconfigured or java gateway is unreachable. Housekeeper changes • An event will

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 5 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Template App Docker - Docker monitoring via Zabbix agent 2. Server • Template Server Chassis by IPMI - server chassis monitoring with BMC over IPMI. You can get these templates: • In Configuration → Templates now accepts strings with macros (a macro must resolve as an integer or a floating-point number). Java gateway property file A new zabbix.propertiesFile configuration parameter allows to specify a property

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 4 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a pused mode, returning the use percentage of the respective buffer. JMX monitoring 19 Zabbix Java gateway now supports working with custom MBeans returning non-primitive data types, which override also the upgrade notes for: • Related macro changes • Related API method changes Logging • Zabbix Java gateway logs are now easier to read, as exception stack trace is no longer available in error and

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . checks • ipmi manager - IPMI poller manager • ipmi poller - poller for IPMI checks • java poller - poller for Java checks • lld manager - manager process of low-level discovery tasks • lld worker - worker checks • ipmi manager - IPMI poller manager • ipmi poller - poller for IPMI checks • java poller - poller for Java checks • poller - normal poller for passive checks • self-monitoring - process for collecting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 5 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ability to monitor JMX without deploying additional software has been introduced in the form of a Java gateway. 5.1.6 Visible host name Visible host name has been implemented; UTF8 support; new macros bigger) Items that are especially useful for automated inventory data collection: • system.hw.chassis[full|type|vendor|model|serial] - default is [full], root permissions needed • system.hw.cpu[all|cpunum

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 5 Java gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . an additional security measure it is recommended to check permis- sions to the /etc/zabbix/zabbix_java_gateway_logback.xml file and set it read-only, if write permissions are available for the ”zabbix” you can import them manually into Zabbix. Item changes Native support for the items system.hw.chassis, system.hw.devices, vfs.dir.count, and vfs.dir.size has been added to Zabbix agent 2. These items