我需要用 ANTLR 解析 Weblogic 日志文件。这是示例:
Tue Aug 28 09:39:09 MSD 2012 [test] [[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] Alert - There is no user password credential mapper provider configured in your security realm. Oracle Service Bus service account management will be disabled. Configure a user password credential mapper provider if you need OSB service account support.
Sun Sep 02 23:13:00 MSD 2012 [test] [[ACTIVE] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'] Warning - Timer (Checkpoint) has been triggered with a tick (205 873) that is less than or equal to the last tick that was received (205 873). This could happen in a cluster due to clock synchronization with the timer authority. The current trigger will be ignored, and operation will be skipped.
Mon Sep 03 10:35:54 MSD 2012 [test] [[ACTIVE] ExecuteThread: '19' for queue: 'weblogic.kernel.Default (self-tuning)'] Info -
[OSB Tracing] Inbound request was received.
Service Ref = Some/URL
URI = Another/URL
Message ID = u-u-i-d
Request metadata =
<xml-fragment>
<tran:headers xsi:type="http:HttpRequestHeaders" xmlns:http="http://www.bea.com/wli/sb/transports/http" xmlns:tran="http://www.bea.com/wli/sb/transports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<http:Accept-Encoding>gzip, deflate,gzip, deflate</http:Accept-Encoding>
<http:Connection>Keep-Alive</http:Connection>
<http:Content-Length>666</http:Content-Length>
<http:Content-Type>text/xml; charset=utf-8</http:Content-Type>
<http:Host>some.host.name</http:Host>
<http:SOAPAction>""</http:SOAPAction>
</tran:headers>
<tran:encoding xmlns:tran="http://www.bea.com/wli/sb/transports">utf-8</tran:encoding>
<http:client-host xmlns:http="http://www.bea.com/wli/sb/transports/http">1.2.3.4</http:client-host>
<http:client-address xmlns:http="http://www.bea.com/wli/sb/transports/http">1.2.3.4</http:client-address>
<http:http-method xmlns:http="http://www.bea.com/wli/sb/transports/http">POST</http:http-method>
</xml-fragment>
Payload =
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"><XMLHere/></s:Envelope>
我对日志的这一部分感兴趣,必须忽略其他所有内容(应解析日期、服务参考值和信封 XML):
Sun Sep 02 23:13:00 MSD 2012 [test] [[ACTIVE] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'] Warning - Timer (Checkpoint) has been triggered with a tick (205 873) that is less than or equal to the last tick that was received (205 873). This could happen in a cluster due to clock synchronization with the timer authority. The current trigger will be ignored, and operation will be skipped.
Mon Sep 03 10:35:54 MSD 2012 [test] [[ACTIVE] ExecuteThread: '19' for queue: 'weblogic.kernel.Default (self-tuning)'] Info -
[OSB Tracing] Inbound request was received.
Service Ref = Some/URL
URI = Another/URL
Message ID = u-u-i-d
Request metadata =
<xml-fragment>
<tran:headers xsi:type="http:HttpRequestHeaders" xmlns:http="http://www.bea.com/wli/sb/transports/http" xmlns:tran="http://www.bea.com/wli/sb/transports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<http:Accept-Encoding>gzip, deflate,gzip, deflate</http:Accept-Encoding>
<http:Connection>Keep-Alive</http:Connection>
<http:Content-Length>666</http:Content-Length>
<http:Content-Type>text/xml; charset=utf-8</http:Content-Type>
<http:Host>some.host.name</http:Host>
<http:SOAPAction>""</http:SOAPAction>
</tran:headers>
<tran:encoding xmlns:tran="http://www.bea.com/wli/sb/transports">utf-8</tran:encoding>
<http:client-host xmlns:http="http://www.bea.com/wli/sb/transports/http">1.2.3.4</http:client-host>
<http:client-address xmlns:http="http://www.bea.com/wli/sb/transports/http">1.2.3.4</http:client-address>
<http:http-method xmlns:http="http://www.bea.com/wli/sb/transports/http">POST</http:http-method>
</xml-fragment>
Payload =
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"><XMLHere/></s:Envelope>
这是我的词法分析器:
lexer grammar LogLexer;
options {filter=true;}
/*------------------------------------------------------------------
* LEXER RULES
*------------------------------------------------------------------*/
LOGDATE : DAY ' ' MONTH ' ' NUMDAY ' ' NUMTIME ' ' TIMEZONE ' ' NUMYEAR;
METAINFO : '[' .* ']' ' [[' .* ']' .* ']' .* '-' .* '[OSB Tracing] Inbound request was received.';
SERVICE_REF : 'Service Ref = ';
URI : (SYMBOL | '/')+;
ENVELOPE_TAG : '<' ENVELOPE_TAGNAME .* '>' .* '</' ENVELOPE_TAGNAME '>';
fragment
ENVELOPE_TAGNAME : SYMBOL+ ':Envelope';
fragment
NUMTIME : NUM NUM ':' NUM NUM ':' NUM NUM;
fragment
TIMEZONE : SYMBOL SYMBOL SYMBOL;
fragment
DAY : 'Sun' | 'Mon' | 'Tue' | 'Wed' | 'Fri' | 'Sat';
fragment
MONTH : 'Sep' | 'Oct' | 'Nov' | 'Dec' | 'Feb' | 'Mar' | 'May' | 'Apr' | 'Jun' | 'Jul' | 'Aug';
fragment
NUMYEAR : NUM NUM NUM NUM;
fragment
NUMDAY : NUM NUM;
fragment
NUM : '0'..'9';
fragment
SYMBOL : ('a'..'z' | 'A'..'Z');
这是解析器(尚未完成):
grammar LogParser;
options {
tokenVocab = OSBLogLexer;
}
@header {
import java.util.List;
import java.util.ArrayList;
}
parse
returns [List<List<String>> entries]
@init {
$entries = new ArrayList<List<String>>();
}
: requestLogEntry+
{
$entries.add($requestLogEntry.logEntry);
};
requestLogEntry
returns [List<String> logEntry]
@init {
$logEntry = new ArrayList<String>();
}
: LOGDATE METAINFO .* serviceRef .* ENVELOPE_TAG
{
$logEntry.add($LOGDATE.getText());
$logEntry.add($serviceRef.serviceURI);
$logEntry.add($ENVELOPE_TAG.getText());
};
serviceRef
returns [String serviceURI]
: SERVICE_REF URI
{
$serviceURI = $URI.getText();
};
问题是它解析日志不正确。我的代码不会忽略不需要的记录,因此我在结果列表中得到无效的 DATE 值:Tue Aug 28 09:39:09 MSD 2012(示例中的第一个)而不是 Mon Sep 03 10:35:54 MSD 2012(正确一个)。有人可以帮我吗?
提前感谢您的回答。
更新
我已经更新了我的代码,但是我得到了生成错误。看不出有什么问题。
更新的词法分析器:
lexer grammar LogLexer;
options {
filter=true;
}
TRASH : LOGDATE ' ' METAINFO (' ' | '\n')* { skip(); };
LOGDATE : DAY ' ' MONTH ' ' NUMDAY ' ' NUMTIME ' ' TIMEZONE ' ' NUMYEAR;
METAINFO : ('[' | ']' | SYMBOL | NUM | ' ' | SPECIAL)+;
OSB_METAINFO : (' ' | '\n')* '[OSB Tracing] Inbound request was received.';
SERVICE_REF : 'Service Ref = ';
URI : (SYMBOL | '/')+;
ENVELOPE_TAG : '<' ENVELOPE_TAGNAME .* '>' .* '</' ENVELOPE_TAGNAME '>';
fragment
OSB_TRACING : '[OSB Tracing] Inbound request was received.';
fragment
ENVELOPE_TAGNAME : SYMBOL+ ':Envelope';
fragment
NUMTIME : NUM NUM ':' NUM NUM ':' NUM NUM;
fragment
TIMEZONE : SYMBOL SYMBOL SYMBOL;
fragment
DAY : 'Sun' | 'Mon' | 'Tue' | 'Wed' | 'Fri' | 'Sat';
fragment
MONTH : 'Sep' | 'Oct' | 'Nov' | 'Dec' | 'Feb' | 'Mar' | 'May' | 'Apr' | 'Jun' | 'Jul' | 'Aug';
fragment
NUMYEAR : NUM NUM NUM NUM;
fragment
NUMDAY : NUM NUM;
fragment
NUM : '0'..'9';
fragment
SYMBOL : ('a'..'z' | 'A'..'Z');
fragment
SPECIAL : ( ~'\n' | '\'' | '.' | '(' | ')' | '-');
更新的解析器:
parser grammar LogParser;
options {
tokenVocab = LogLexer;
}
@header {
import java.util.List;
import java.util.ArrayList;
}
parse returns [List<List<String>> entries]
@init {
$entries = new ArrayList<List<String>>();
}
: requestLogEntry+
{
$entries.add($requestLogEntry.logEntry);
};
requestLogEntry
returns [List<String> logEntry]
@init {
$logEntry = new ArrayList<String>();
}
: LOGDATE ' ' METAINFO OSB_METAINFO .* serviceRef .* ENVELOPE_TAG
{
$logEntry.add($LOGDATE.getText());
$logEntry.add($serviceRef.serviceURI);
$logEntry.add($ENVELOPE_TAG.getText());
};
serviceRef
returns [String serviceURI]
: SERVICE_REF URI
{
$serviceURI = $URI.getText();
};
词法分析器生成错误:
[14:18:12] error(204): LogLexer.g:56:21: duplicate token type '\'' when collapsing subrule into set
[14:18:12] error(204): LogLexer.g:56:28: duplicate token type '.' when collapsing subrule into set
[14:18:12] error(204): LogLexer.g:56:34: duplicate token type '(' when collapsing subrule into set
[14:18:12] error(204): LogLexer.g:56:40: duplicate token type ')' when collapsing subrule into set
[14:18:12] error(204): LogLexer.g:56:46: duplicate token type '-' when collapsing subrule into set
[14:18:12] error(204): LogLexer.g:56:21: duplicate token type '\'' when collapsing subrule into set
[14:18:12] error(204): LogLexer.g:56:28: duplicate token type '.' when collapsing subrule into set
[14:18:12] error(204): LogLexer.g:56:34: duplicate token type '(' when collapsing subrule into set
[14:18:12] error(204): LogLexer.g:56:40: duplicate token type ')' when collapsing subrule into set
[14:18:12] error(204): LogLexer.g:56:46: duplicate token type '-' when collapsing subrule into set
这些错误似乎随机发生并且随机消失(文件重命名)。ANTLR 还会从我的解析器文件中生成另一个词法分析器(这也是随机发生的)。我在 Windows 7 (x64) 上使用最后可用的 ANTLR3 和 ANTLRWorks。