Question

我有一个Dynamic CRM插件，它有两个步骤。一个是在pre-create上运行，另一个是在post-create上运行。我使用过共享变量。我在预创建时设置共享变量中的值，并在创建后重新创建值。

现在是线程安全的。如果两个用户在同一个组织中触发相同的插件，那么他们是否会过度写入其他数据？

在共享变量中设置值：

> Sys.setenv(HADOOP_HOME="/usr/share/hadoop/share/hadoop/common/")
> Sys.setenv(HIVE_HOME = '/opt/hive/lib/')
> host = 'tools-1.hadoop.srv'
> port = 10000
> driverclass = "org.apache.hive.jdbc.HiveDriver"
> library(RJDBC)
Loading required package: DBI
Loading required package: rJava
> dr = JDBC(driverclass,classPath = c("/opt/hive/lib/hive-jdbc-1.0.0-standalone.jar"))
> dr2 = JDBC(driverclass,classPath = c("/opt/hive/lib/hive-jdbc-1.0.0-standalone.jar",
+                                      "/opt/hive/lib/commons-configuration-1.6.jar"))
> url = paste0("jdbc:hive2://", host, ":", port)
> dbConnect(dr, url, username = "mkosinski", database = "loghost") -> cont
log4j:WARN No appenders could be found for logger (org.apache.hive.jdbc.Utils).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Error in .jcall(drv@jdrv, "Ljava/sql/Connection;", "connect", as.character(url)[1],  : 
  java.lang.NoClassDefFoundError: org/apache/hadoop/conf/Configuration
> dbConnect(dr2, url, username = "mkosinski", database = "loghost") -> cont
Error in .jcall(drv@jdrv, "Ljava/sql/Connection;", "connect", as.character(url)[1],  : 
  java.lang.NoClassDefFoundError: org/apache/hadoop/conf/Configuration
> sessionInfo()
R version 3.1.3 (2015-03-09)
Platform: x86_64-redhat-linux-gnu (64-bit)
Running under: CentOS Linux 7 (Core)

locale:
 [1] LC_CTYPE=en_US.UTF-8          LC_NUMERIC=C                  LC_TIME=en_US.UTF-8           LC_COLLATE=en_US.UTF-8       
 [5] LC_MONETARY=en_US.UTF-8       LC_MESSAGES=en_US.UTF-8       LC_PAPER=en_US.UTF-8          LC_NAME=en_US.UTF-8          
 [9] LC_ADDRESS=en_US.UTF-8        LC_TELEPHONE=en_US.UTF-8      LC_MEASUREMENT=en_US.UTF-8    LC_IDENTIFICATION=en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] RJDBC_0.2-5 rJava_0.9-7 DBI_0.3.1  

loaded via a namespace (and not attached):
[1] tools_3.1.3

从共享变量中获取值：

context.SharedVariables.Add("statecode", stateCodeValue);
context.SharedVariables.Add("statuscode", statusCodeValue);

Answer 1

是的，这是线程安全的。传递给插件类的IPluginExecutionContext是为插件执行管道唯一创建的对象。共享变量从一个阶段传递到下一个阶段（PreValidation =＆gt; PreOperation =＆gt; PostOperation =＆gt; AsyncOperation）。

执行管道特定于CRM平台处理的任何单个操作。（例如，关于特定记录的创建或更新消息。）

动态CRM共享变量线程安全

1 个答案: