http://docs.djangoproject.com/en/dev/intro/tutorial03/
I was at the step Decoupling the URLconfs where the tutorial illustrates how to decouple urls.py. On doing exactly what it says, i get the following error-
error at /polls/1/
nothing to repeat
Request Method: GET
Request URL: http://localhost:8000/polls/1/
Exception Type: error
Exception Value:
nothing to repeat
Exception Location: C:\jython2.5.1\Lib\re.py in _compile, line 241
Python Executable: C:\jython2.5.1\jython.bat
Python Version: 2.5.1
Python Path: ['E:\\Programming\\Project\\django_app\\mysite', 'C:\\jython2.5.1\\Lib\\site-packages\\setuptools-0.6c11-py2.5.egg', 'C:\\jython2.5.1\\Lib', '__classpath__', '__pyclasspath__/', 'C:\\jython2.5.1\\Lib\\site-packages']
Server time: Mon, 12 Apr 2010 12:02:56 +0530
Check your regex syntax. In particular, see if you are missing an opening parenthesis before a ? towards the beginning of the pattern, as in
r'^?P<poll_id>\d+)/$'
# ^ note the missing parenthesis
The above should read
r'^(?P<poll_id>\d+)/$'
instead.
(An explanation: "nothing to repeat" is a regex error which arises due to an ? regex operator occurring where it is not preceded by something which it can sensibly attach to. The ? in (?P<...>...) is treated specially, but if you forget the opening parenthesis, the regex engine will treat ? in the regular way, which makes no sense right after ^.)
Related
I have the following gradle task:
processResources {
inputs.properties(project.properties.findAll { it.value instanceof String })
filesMatching("**/*.yaml") {
filteringCharset = 'UTF-8'
expand project.properties
}
}
that I use to process a spring boot application.yaml file that contains variable placeholders.
How can I escape a whole log pattern without escaping every single special character, thus keeping the pattern clean?
application.yaml:
logging:
pattern:
console: %clr(%d{${LOG_DATEFORMAT_PATTERN:-yyyy-MM-dd HH:mm:ss.SSS}}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}
Tried using slashy strings with no success:
1.Tried:
/%clr(%d{${LOG_DATEFORMAT_PATTERN:-yyyy-MM-dd HH:mm:ss.SSS}}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}/
Error:
Caused by: groovy.lang.GroovyRuntimeException: Failed to parse template script (your template may contain an error or be trying to use expressions not currently supported): startup failed:
SimpleTemplateScript8.groovy: 138: expecting '}', found 'HH' # line 138, column 60.
ATEFORMAT_PATTERN:-yyyy-MM-dd HH:mm:ss.S
^
2.Tried:
$/%clr(%d{${LOG_DATEFORMAT_PATTERN:-yyyy-MM-dd HH:mm:ss.SSS}}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}/$
Error:
Caused by: groovy.lang.GroovyRuntimeException: Failed to parse template script (your template may contain an error or be trying to use expressions not currently supported): startup failed:
SimpleTemplateScript10.groovy: 138: illegal string body character after dollar sign;
solution: either escape a literal dollar sign "\$5" or bracket the value expression "${5}" # line 138, column 15.
console: $/%clr(%d{${LOG_DATEFORMAT_PATTERN:-yyyy-MM-dd HH:mm:ss.SSS}}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}/$
^
Given that your YAML files contains character which are interpreted as tokens by the expand method, relying on Groovy's SimpleTemplateEngine, you should use an alternative method like the filter methods.
The documentation shows a number of examples of filter. By using the underlying Ant ReplaceTokens you might have better luck, as it uses #token# as the notation.
I'm trying to parse log4j messages:
2019-12-02 20:48:20.198utc DEBUG UnknownElementContentHandler,streamLock-9-th-11:32 - blabla
2019-11-19 23:40:04.014utc WARN AnnotationBinder,localhost-startStop-1:611 - blabla
2019-11-19 23:40:04.014utc INFO CovImCtl,main:109 - blabla
with grok pattern
%{TIMESTAMP_ISO8601:timestamp}utc%{SPACE}%{LOGLEVEL:level}%{SPACE}%{JAVACLASS:class},%{JAVAMETHOD1:method}:%{POSINT:lineno}%{SPACE}-%{SPACE}%{GREEDYDATA:message}
with using a variation on the standard:
JAVAMETHOD (?:(<(?:cl)?init>)|[a-zA-Z$_][a-zA-Z$_0-9]*)
JAVAMETHOD1 (?:(<(?:cl)?init>)|[a-zA-Z$_][a-zA-Z$_\-0-9]*)
The JAVAMETHOD worked for "main" but not for the others, (the pattern was missing -).
JAVAMETHOD1 works, but I need to get the optional trailing integer retrieved as a "thread_no" field (11 from streamLock-9-th-11, 1 from localhost-startStop-1)
I'm wrecking my brain, the methods like streamLock-9-th-11 has the internal "-\d+" "-9" which belongs to "streamLock-9-th"
Any ideas?
I'm trying to use the Ansible replace module to change some text in a file on a Windows Server 2019 Standard target. I'm using Ansible 2.8.3 running on Python 2.7
- name: REPLACE | Replace baseline.local with FQDN in InternetSettings.xml
replace:
path: '/path/to/settings.xml'
regexp: 'baseline\.local'
replace: '{{ FQDN }}'
I don't think the issue is the path, although one of the directories on the path to the file has brackets '{}' in its name. Could that be it?
I've tried to do the same thing with win_lineinfile, and it didn't throw an error with the same path, but it'd be difficult in this case to replicate the functionality of replace, which is really what I need.
EDIT 2: It works when I copy the file over to my local machine and delegate to 127.0.0.1. I'm running ansible from a Windows Subsystem for Linux (WSL) installation. It also works when I copy the file to a remote linux system and run replace there, so it seems to be a Windows problem.?
EDIT: The stack trace of the error I'm getting:
"Exception calling "Create" with "1" argument(s): "At line:4 char:21
+ def _ansiballz_main():
+ ~
An expression was expected after '('.
At line:13 char:27
+ except (AttributeError, OSError):
+ ~
Missing argument in parameter list.
At line:15 char:7
+ if scriptdir is not None:
+ ~
Missing '(' after 'if' in if statement.
At line:22 char:7
+ if sys.version_info < (3,):
+ ~
Missing '(' after 'if' in if statement.
At line:22 char:30
+ if sys.version_info < (3,):
+ ~
Missing expression after ','.
At line:22 char:25
+ if sys.version_info < (3,):
+ ~
The '<' operator is reserved for future use.
At line:24 char:32
+
My teammates and I suspect that this issue is the result of attempting to use an ansible module not built for windows on a windows target - more particularly, a target that doesn't have python installed. We suspect that some part of the compiling of python on the ansible controller or subsequent execution of the python binary on the windows target is what's really causing the problem here. We've decided on the workaround of just using win_shell with powershell's 'replace' to do what we need to do.
Try changing your regexp string to double quotes:
regexp: "baseline.local"
I am trying to find a way to parse a Catalina.log and i am really struggling.
This a piece of the code:
May 12, 2017 2:14:38 PM org.apache.coyote.AbstractProtocol init
SEVERE: Failed to initialize end point associated with ProtocolHandler ["http-apr-10.1.31.104-443"]
java.lang.Exception: Connector attribute SSLCertificateFile must be defined when using SSL with APR
at org.apache.tomcat.util.net.AprEndpoint.bind(AprEndpoint.java:490)
at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:649)
at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:434)
at org.apache.catalina.connector.Connector.initInternal(Connector.java:978)
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
at org.apache.catalina.core.StandardService.initInternal(StandardService.java:559)
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:821)
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
at org.apache.catalina.startup.Catalina.load(Catalina.java:638)
at org.apache.catalina.startup.Catalina.load(Catalina.java:663)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:253)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:427)
I wanna get
Date = May 12, 2017 2:14:38 PM
class = org.apache.coyote.AbstractProtocol init
Error level = SEVERE
Error Msg = Failed to initialize end point associated with ProtocolHandler ["http-apr-10.1.321.224-443"]
Error Msg Body = java.lang.Exception: Connector attribute SSLCertificateFile must be defined when using SSL with APR
at org.apache.tomcat.util.net.AprEndpoint.bind(AprEndpoint.java:490)....
i don even know where to start :)
any ideas are very welcomed
I have prepared for you the following regex:
((Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s+\d{1,2},\s+\d{4}\s+\d{1,2}:\d{1,2}:\d{1,2}\s(AM|PM))\s(.+)(\r)?\n(FATAL|SEVERE|ERROR|WARN(ING)?|INFO|CONFIG|INFO|DEBUG):\s(.+)(\r)?\n(.+)(\r)?\n(?=\s+at.+java:\d+\))
You can use the following back reference to capture your groups
DATE -> $1
CLASS -> $4
ERROR_LEVEL -> $6
ERROR_MSG -> $8
ERROR_BODY -> $10
The regex will only fetch strings that met the following conditions:
starts by a date in the format specified in your post
after the date, the first line is composed of the class name
the 2nd line is composed of the error level and the error msg
the 3rd line is your error msg body
followed by a java strack trace of n lines starting by \s at and ending by java:\d+)
The regex works in the following way:
((Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s+\d{1,2},\s+\d{4}\s+\d{1,2}:\d{1,2}:\d{1,2}\s(AM|PM))
This part will fetch the date in the format of your post:
3 char month followed by space(s) then 1 or 2 digits, ',' then year in 4 digit
then space(s), then time(column char, followed by space(s) then AM or PM
\s(.+)(\r)?\n
this part of the regex will allow you to get the rest of your first line corresponding to your class
(FATAL|SEVERE|ERROR|WARN(ING)?|INFO|CONFIG|INFO|DEBUG):\s(.+)(\r)?\n(.+)(\r)?\n
This part will allow you to get the error level (in this exhaustive list) followed by column and the following 2 lines corresponding to your error msg/body
(?=\s+at.+java:\d+\))
This last part is a condition the enforce that your error is followed by a java stack trace.
You might need to adapt a bit some parts of the regex (like the number of lines of the error body, error message) or the stack trace conditions but I think this is a great starting point for your case.
CHEERS!!!
Example:
info: 2014-10-28T22:39:46.593Z - info: an error occurred while trying
to handle command: PlaceMarketOrderCommand, xkkdAAGRIl. Error:
Insufficient Cash #userId=5 #orderId=Y5545
pattern:
> %{LOGLEVEL:stream_level}: %{TIMESTAMP_ISO8601:timestamp} -
> %{LOGLEVEL:log_level}: %{MESSAGE:message}
> (#userId=%{USER_ID:user_id})? (#orderId=%{ORDER_ID:order_id})?
extra patterns used:
USER_ID (\d+|None)
ORDER_ID .*
ORDER_ID_HASH \s*(#orderId=%{ORDER_ID:order_id})?
USER_ID_HASH \s*(#userId=%{USER_ID:user_id})?
MESSAGE (.*?)
Works fine:
removing the optional last orderId also works
info: 2014-10-28T22:39:46.593Z - info: an error occurred while trying
to handle command: PlaceMarketOrderCommand, xkkdAAGRIl. Error:
Insufficient Cash #userId=5
but if I keep the orderId and remove the userId then I get a "no match"
info: 2014-10-28T22:39:46.593Z - info: an error occurred while trying
to handle command: PlaceMarketOrderCommand, xkkdAAGRIl. Error:
Insufficient Cash #orderId=Y5545
Also the user_id group is ending with a ? as an optional group..
working with the grok debugger in heroku:
Is this a bug? (logstash 1.4.2) missing something with the regex? (more probable.. but what?)
I looked at the regex lib grok is using and looks this syntax supposed to work. It does work for the last group (orderId) but not for the one before..
Thanks for the help!
You are forcing a space to be before your optional last... you need to do ?:
%{LOGLEVEL:stream_level}: %{TIMESTAMP_ISO8601:timestamp} -> %{LOGLEVEL:log_level}: %{MESSAGE:message} ?(#userId=%{USER_ID:user_id})? ?(#orderId=%{ORDER_ID:order_id})?