grails - 合并的LdapTemplate在上下文验证期间停顿了几分钟

Question

我正在尝试使用Spring-ldap的LdapTemplate在Rest调用服务实现期间从LDAP源中检索信息，尽管我认为我的配置正常，但是当服务被命中时，我们会间歇地等待15分钟。日志记录语句确定停顿发生在ldapTemplate.search()调用期间。

我的 bean :

    contextSourceTarget(org.springframework.ldap.core.support.LdapContextSource) {
        urls = ["https://someldapsource.com"]
        userDn = 'uid=someaccount,ou=xxx,cn=users,dc=org,dc=com'
        password = 'somepassword'
        pooled = true
    }
    dirContextValidator(org.springframework.ldap.pool2.validation.DefaultDirContextValidator)
    poolConfig( org.springframework.ldap.pool2.factory.PoolConfig ) {
        testOnBorrow = true
        testWhileIdle = true
    }
    ldapContextSource(org.springframework.ldap.pool2.factory.PooledContextSource, ref('poolConfig')) {
        contextSource = ref('contextSourceTarget')
        dirContextValidator = ref('dirContextValidator')
    }

    ldapTemplate(LdapTemplate, ref('ldapContextSource')) {}

我希望此应用程序可能同时(通过并发该应用程序的剩余调用)多次击中LDAP，以从不同的用户中检索数据。这是进行该调用的代码:

    List attrs =['uid', 'otherattr1', 'otherattr2']
// this just returns a Map containing the key value pairs of the attrs passed in here.
    LdapNamedContextMapper mapper = new LdapNamedContextMapper( attrs ) 
    log.debug( "getLdapUser:preLdapSearch")
    List<Map> results = ldapTemplate.search( 
        'cn=grouproot,cn=Groups,dc=org,dc=com',
        'uniquemember=userNameImsearchingfor',
        SearchControls.SUBTREE_SCOPE, 
        attrs as String[], mapper )
    log.debug( "getLdapUser:postLdapSearch" )

不幸的是，似乎在随机时间，preLdapSearch和postLdapSearch日志之间的时间戳差异超过15分钟。显然，这很糟糕，这似乎是池管理问题。

所以我打开了org.springframework.ldap和org.apache.commons.pool2包的调试日志记录

现在，当发生这种情况时，我会在日志中得到以下内容:

2018-09-20 20:18:46.251 DEBUG appEvent="getLdapUser:preLdapSearch"
2018-09-20 20:35:03.246 DEBUG  A class javax.naming.ServiceUnavailableException - not explicitly configured to be a non-transient exception - encountered; ignoring.
2018-09-20 20:35:03.249 DEBUG  DirContext 'javax.naming.ldap.InitialLdapContext@1f4f37b4' failed validation with an exception.
javax.naming.ServiceUnavailableException: my.ldaphost.com:636; socket closed
at com.sun.jndi.ldap.Connection.readReply(Connection.java:454)
at com.sun.jndi.ldap.LdapClient.getSearchReply(LdapClient.java:638)
at com.sun.jndi.ldap.LdapClient.getSearchReply(LdapClient.java:638)
at com.sun.jndi.ldap.LdapClient.search(LdapClient.java:561)
at com.sun.jndi.ldap.LdapCtx.doSearch(LdapCtx.java:1985)
at com.sun.jndi.ldap.LdapCtx.searchAux(LdapCtx.java:1844)
at com.sun.jndi.ldap.LdapCtx.c_search(LdapCtx.java:1769)
at com.sun.jndi.toolkit.ctx.ComponentDirContext.p_search(ComponentDirContext.java:392)
(LOTS OF STACK TRACE REMOVED)
2018-09-20 20:35:03.249 DEBUG Closing READ_ONLY DirContext='javax.naming.ldap.InitialLdapContext@1f4f37b4'
2018-09-20 20:35:03.249 DEBUG Closed READ_ONLY DirContext='javax.naming.ldap.InitialLdapContext@1f4f37b4'
2018-09-20 20:35:03.249 DEBUG Creating a new READ_ONLY DirContext
2018-09-20 20:35:03.787 DEBUG Created new READ_ONLY DirContext='javax.naming.ldap.InitialLdapContext@5239386d'
2018-09-20 20:35:03.838 DEBUG DirContext 'javax.naming.ldap.InitialLdapContext@5239386d' passed validation.
2018-09-20 20:35:03.890 DEBUG appEvent="getLdapUser:postLdapSearch"

问题:

我如何找到更多？我已经为org.springframework.ldap和org.apache.commons.pool2

打开了调试日志记录

为什么似乎需要15分钟以上才能确定连接陈旧/不可用？我该如何配置以使其更短？

Answer 1

底层LDAP系统很有可能出现连接问题。
您可以尝试在连接池设置中添加超时:

max-wait - default is -1
eviction-run-interval-millis - you may want to set this to control how often to check for problems

文件: https://docs.spring.io/spring-ldap/docs/current/reference/#pool-configuration