Redis connection not reinstated on connection failure.

Bắt đầu với RedisDataSource.java, đặc biệt là get0, và xem xét cách cấu hình Redis PSN dùng chung tạo và sử dụng kết nối của nó. Tái hiện lỗi máy chủ không hoạt động được mô tả trong issue, sau đó xác minh rằng một lần đọc Redis tiếp theo sẽ khôi phục kết nối mà không yêu cầu /reloadalias.

CMDHELPER-2829 - Reported by CyaNox

After having the test server idle for a while (no scripts calling any PSN calls that would store in the Redis PSN) the following error popped up once it tried to retrieve a value from the Redis PSN:

The line in question is nothing wrong with as it works perfectly fine after boot up and also after a /reloadalias but for completeness sake I'll add the line of code as well:

  ...
  @g = get_value('redis.permissions.' . @where . 's') # @@@ The line that initiated the error @@@
  ...

The error:

20:51:15 [INFO] IOException: com.laytonsmith.libs.redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketException: Broken pipe
        proc _permissions_permission_ex:/.../Permissions.inc.ms:159
        proc _permissions_add_permission_to_group:/.../Permissions.inc.ms:194
        <<main code>>:/.../Permissions.msa:16

20:51:15 [SEVERE] The previous MethodScript error had an attached cause:
20:51:15 [SEVERE] com.laytonsmith.persistance.DataSourceException: com.laytonsmith.libs.redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketException: Broken pipe
20:51:15 [SEVERE]       at com.laytonsmith.persistance.RedisDataSource.get0(RedisDataSource.java:112)
20:51:15 [SEVERE]       at com.laytonsmith.persistance.AbstractDataSource.get(AbstractDataSource.java:68)
20:51:15 [SEVERE]       at com.laytonsmith.persistance.PersistanceNetwork.get(PersistanceNetwork.java:110)
20:51:15 [SEVERE]       at com.laytonsmith.core.functions.Persistance$get_value.exec(Persistance.java:151)
20:51:15 [SEVERE]       at com.laytonsmith.core.Script.eval(Script.java:310)
20:51:15 [SEVERE]       at com.laytonsmith.core.Script.eval(Script.java:272)
20:51:15 [SEVERE]       at com.laytonsmith.core.Procedure.execute(Procedure.java:191)
20:51:15 [SEVERE]       at com.laytonsmith.core.Procedure.cexecute(Procedure.java:149)
20:51:15 [SEVERE]       at com.laytonsmith.core.Script.eval(Script.java:239)
20:51:15 [SEVERE]       at com.laytonsmith.core.Script.eval(Script.java:272)
20:51:15 [SEVERE]       at com.laytonsmith.core.Procedure.execute(Procedure.java:194)
20:51:15 [SEVERE]       at com.laytonsmith.core.Procedure.cexecute(Procedure.java:149)
20:51:15 [SEVERE]       at com.laytonsmith.core.Script.eval(Script.java:239)
20:51:15 [SEVERE]       at com.laytonsmith.core.Script.seval(Script.java:210)
20:51:15 [SEVERE]       at com.laytonsmith.core.Procedure.cexecute(Procedure.java:147)
20:51:15 [SEVERE]       at com.laytonsmith.core.Script.eval(Script.java:239)
20:51:15 [SEVERE]       at com.laytonsmith.core.MethodScriptCompiler.execute(MethodScriptCompiler.java:1494)
20:51:15 [SEVERE]       at com.laytonsmith.core.MethodScriptCompiler.execute(MethodScriptCompiler.java:1454)
20:51:15 [SEVERE]       at com.laytonsmith.core.Script.run(Script.java:164)
20:51:15 [SEVERE]       at com.laytonsmith.core.AliasCore.alias(AliasCore.java:150)
20:51:15 [SEVERE]       at com.laytonsmith.commandhelper.CommandHelperServerListener.onServerCommand(CommandHelperServerListener.java:41)
20:51:15 [SEVERE]       at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source)
20:51:15 [SEVERE]       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
20:51:15 [SEVERE]       at java.lang.reflect.Method.invoke(Method.java:606)
20:51:15 [SEVERE]       at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
20:51:15 [SEVERE]       at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
20:51:15 [SEVERE]       at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:30)
20:51:15 [SEVERE]       at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:478)
20:51:15 [SEVERE]       at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:463)
20:51:15 [SEVERE]       at net.minecraft.server.v1_6_R3.DedicatedServer.as(DedicatedServer.java:272)
20:51:15 [SEVERE]       at net.minecraft.server.v1_6_R3.DedicatedServer.t(DedicatedServer.java:241)
20:51:15 [SEVERE]       at net.minecraft.server.v1_6_R3.MinecraftServer.s(MinecraftServer.java:493)
20:51:15 [SEVERE]       at net.minecraft.server.v1_6_R3.MinecraftServer.run(MinecraftServer.java:425)
20:51:15 [SEVERE]       at net.minecraft.server.v1_6_R3.ThreadServerApplication.run(SourceFile:583)
20:51:15 [SEVERE] Caused by: com.laytonsmith.libs.redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketException: Broken pipe
20:51:15 [SEVERE]       at com.laytonsmith.libs.redis.clients.jedis.Connection.flush(Connection.java:66)
20:51:15 [SEVERE]       at com.laytonsmith.libs.redis.clients.jedis.Connection.getBinaryBulkReply(Connection.java:180)
20:51:15 [SEVERE]       at com.laytonsmith.libs.redis.clients.jedis.Connection.getBulkReply(Connection.java:171)
20:51:15 [SEVERE]       at com.laytonsmith.libs.redis.clients.jedis.Jedis.get(Jedis.java:67)
20:51:15 [SEVERE]       at com.laytonsmith.persistance.RedisDataSource.get0(RedisDataSource.java:109)
20:51:15 [SEVERE]       ... 33 more
20:51:15 [SEVERE] Caused by: java.net.SocketException: Broken pipe
20:51:15 [SEVERE]       at java.net.SocketOutputStream.socketWrite0(Native Method)
20:51:15 [SEVERE]       at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
20:51:15 [SEVERE]       at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
20:51:15 [SEVERE]       at com.laytonsmith.libs.redis.clients.util.RedisOutputStream.flushBuffer(RedisOutputStream.java:29)
20:51:15 [SEVERE]       at com.laytonsmith.libs.redis.clients.util.RedisOutputStream.flush(RedisOutputStream.java:227)
20:51:15 [SEVERE]       at com.laytonsmith.libs.redis.clients.jedis.Connection.flush(Connection.java:64)
20:51:15 [SEVERE]       ... 37 more

Relevant PSN config:

$shared=redis://localhost:6379?timeout=90&password=pass

# Shared
storage.redis.**=$shared