EEM inbuilt enviroment vars
Hi Guys,
Having trouble getting the in built enviromental variables to execute on a basic EEM script, any idea why the below doesn't work. I need to append something unique to the filename otherwise the script will overwrite it's self.
event manager applet ERRORS
event none
action 1.0 cli command "enable"
action 1.1 cli command "sh proc cpu | redirect flash:cpu_info$_resource_time_sent"
action 1.2 cli command "show interface | redirect flash:interface_info$_resource_time_sent"
action 1.6 syslog msg "ERRORS DETECTED"
Debugs show the following :
Feb 20 11:16:18.598: %HA_EM-6-LOG: ERRORS : DEBUG(cli_lib) : : CTL : cli_open called.
Feb 20 11:16:18.598: %HA_EM-6-LOG: ERRORS : DEBUG(cli_lib) : : OUT : R2>
Feb 20 11:16:18.598: %HA_EM-6-LOG: ERRORS : DEBUG(cli_lib) : : IN : R2>enable
Feb 20 11:16:18.610: %HA_EM-6-LOG: ERRORS : DEBUG(cli_lib) : : OUT : R2#
Feb 20 11:16:18.610: %HA_EM-3-FMPD_UNKNOWN_ENV: fh_parse_var: could not find environment variable: _resource_time_sent
Feb 20 11:16:18.610: %HA_EM-3-FMPD_ERROR: Error executing applet ERRORS statement 1.1
R2#sh event manager version
Embedded Event Manager Version 3.00
Component Versions:
eem: (v300_throttle)2.2.2
eem-gold: (v300_throttle)1.0.10
eem-call-home: (v300_throttle)2.0.2
Running IOS 12.4 24 T2
Thanks
Luckily you're using event manager detector, in which case it sounds like you could use $_event_pub_time, $_event_pub_sec, or even $_event_pub_msec.
http://www.cisco.com/en/US/docs/ios/netmgmt/command/reference/nm_13.html
Applet Built-in Environment Variables: $_event_id$_event_type$_event_type_string$_event_pub_time$_event_pub_sec$_event_pub_msec$_event_severity$_counter_name $_counter_value
The following doc has a sample output, which is in unix epoch time that can be converted to become human-readable:
# perl -e 'print scalar(localtime(1190283990)), "\n"'
Thu Sep 20 03:26:30 2007
http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.8/system_monitoring/command/reference/or38eem.html
RP/0/RP0/CPU0:router# event manager run policy-manual.tcl parameter1 parameter2 parameter3
RP/0/RP0/CPU0:Sep 20 10:26:31.169 : user-plocy.tcl[65724]: The reqinfo of arg2 is
parameter2.
RP/0/RP0/CPU0:Sep 20 10:26:31.170 : user-plocy.tcl[65724]: The reqinfo of argc is 3.
RP/0/RP0/CPU0:Sep 20 10:26:31.171 : user-plocy.tcl[65724]: The reqinfo of arg3 is
parameter3.
RP/0/RP0/CPU0:Sep 20 10:26:31.172 : user-plocy.tcl[65724]: The reqinfo of
event_type_string is none.
RP/0/RP0/CPU0:Sep 20 10:26:31.172 : user-plocy.tcl[65724]: The reqinfo of event_pub_sec is
1190283990.
RP/0/RP0/CPU0:Sep 20 10:26:31.173 : user-plocy.tcl[65724]: The reqinfo of event_pub_time
is 1190283990.
RP/0/RP0/CPU0:Sep 20 10:26:31.173 : user-plocy.tcl[65724]: The reqinfo of event_id is 3.
RP/0/RP0/CPU0:Sep 20 10:26:31.174 : user-plocy.tcl[65724]: The reqinfo of arg1 is
parameter1.
RP/0/RP0/CPU0:Sep 20 10:26:31.175 : user-plocy.tcl[65724]: The reqinfo of event_type is
16.
RP/0/RP0/CPU0:Sep 20 10:26:31.175 : user-plocy.tcl[65724]: The reqinfo of event_pub_msec
is 830
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** Sample Program acting as a loadable Apache module.
** Overview:
** This sample program contains the necessary methods to make the program act as a module which can be loaded into the Apache ** Web Server. This program contains skeleton code which is necessary for any module which needs to be loaded into the Apache ** Web Server.
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//End of sample
In this program, inside the access_checker() method, we try to retrieve the address of "headers_in" and get that as NULL:
extern "C" int access_checker(request_rec *r)
FILE * fp;
fp = fopen("/var/apache2/logs/sample.txt", "a");
fprintf(fp, "\n r->headers_in = %u, r->method = %s", r->headers_in, r->method);
fclose(fp);
return OK;
Here is the output of the sample program after accessing the main page of the Web server:
r->headers_in = 0, r->method = GET
r->headers_in = 0, r->method = GET
r->headers_in = 0, r->method = GET
Though we are able to retrieve one member of the structure request_rec (method), we are not able to retrieve the address of the other member (headers_in).
Observation:
We made an interesting observation that when we used the same sample program with the inbuilt Apache 2.0.52 Web Server on Solaris, we were able to successfully retrieve the address of headers_in. Here are the details of the set-up which is working fine:
Apache Web Server: Version 2.0.52
Platform : SunOS 5.10 Generic_118822-30
Thus, there is something different which has happened between the Sun's Solaris Apache Web Server's versions 2.0.52 and 2.0.58 which is making it unable to retrieve the address of the request headers (headers_in) in version 2.0.58.
Can sombody please help me find out the reson for this difference and let me know if we need to change the way of retrieving the request headers for Solaris Apache 2.0.58.
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Hi,
Set-up:
We are working on a custom application which works with the inbuilt Apache Web Server on the Sun Solaris platform. Here are the details of the versions of the various components involved:
Apache Web Server: Version 2.0.58
Platform: SunOS 5.10 Generic_127111-03
Our application is in the form of a shared library(.so binary) which is loaded into the Apache Web Server by mentioning the following directive in the Apache Web Server's configuration file (httpd.conf).
LoadModule at_module "/var/apache2/logs/sample/sample.so"
where, sample.so is our application's binary
and at_module is the name of the module.
httpd.conf file has been attached for your reference.
Attachments:
httpd.conf - Apache Web Server's configuration file.
sample-apache.cpp - Sample program which is showing the problem.
httpd.h - Apache Software Foundation's file which contains the structure "request_rec" that represents the current request.
Problem summary:
For each request to the Apache Web server, the server maintains a table of type "apr_table_t" which contains the header environment from the request. There is a structure "request_rec" maintained in the httpd.h file:
/** A structure that represents the current request */
struct request_rec {
/** The pool associated with the request */
apr_pool_t *pool;
/** Request method (eg. GET, HEAD, POST, etc.) */
const char *method;
/** MIME header environment from the request */
apr_table_t *headers_in;
In our case, when we try to retrieve the address of "headers_in", we get a NULL Value. Please refer to the attached "sample-apache.cpp" program. In this program, inside the access_checker() method, we try to retrieve the address of "headers_in" and get that as NULL:
extern "C" int access_checker(request_rec *r)
FILE * fp;
fp = fopen("/var/apache2/logs/sample.txt", "a");
fprintf(fp, "\n r->headers_in = %u, r->method = %s", r->headers_in, r->method);
fclose(fp);
return OK;
Here is the output of the sample program after accessing the main page of the Web server:
r->headers_in = 0, r->method = GET
r->headers_in = 0, r->method = GET
r->headers_in = 0, r->method = GET
Though we are able to retrieve one member of the structure request_rec (method), we are not able to retrieve the address of the other member (headers_in).
Observation:
We made an interesting observation that when we used the same sample program with the inbuilt Apache 2.0.52 Web Server on Solaris, we were able to successfully retrieve the address of headers_in. Here are the details of the set-up which is working fine:
Apache Web Server: Version 2.0.52
Platform : SunOS 5.10 Generic_118822-30
Thus, there is something different which has happened between the Sun's Solaris Apache Web Server's versions 2.0.52 and 2.0.58 which is making it unable to retrieve the address of the request headers (headers_in).
I am requesting someone to kindly shed light on this difference and let us know if we need to change the way of retrieving the request headers for Solaris Apache 2.0.58.
Thanks,
Atul.The only way you can achieve it is by running the web server to listen on port 80
Please change the port in your httpd.conf file for the webserver and restart it.
If any other processes are running/using on port 80 on that machine, then please stop them, otherwise you will not be able to achieve your requirement.
Arun -
How to access application vars into JavaBeans or Java File?
I have the application directory strcuture like this. I am using Apache Tomcat/6.0.14 and Eclipse IDE.
-/MyFirstServlet
-/MyFirstServlet/WebContent
-/MyFirstServlet/WebContent/WEB-INF/web.xml
-/MyFirstServlet/WebContent/web.jsp
-/MyFirstServlet/Src
- com.model.DAO/userDAO.java (java class within package)
I have put following code into "web.xml".
==================================
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>
MyFirstServlet
</display-name>
<context-param>
<param-name>DBDriver</param-name>
<param-value>com.microsoft.sqlserver.jdbc.SQLServerDriver</param-value>
</context-param>
<context-param>
<param-name>connectionUrl</param-name>
<param-value>jdbc:sqlserver://localhost:1433;databaseName=MyFirstServletDB;user=hitesh;password=hit
esh;</param-value>
</context-param>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>
I am easily able to access from "web.jsp"
===================================
String DBDriver = application.getInitParameter("DBDriver");
out.println("<br>DBDriver:==="+DBDriver);
String connectionUrl = application.getInitParameter("connectionUrl");
out.println("<br>connectionUrl:==="+connectionUrl);
BUT when I try to access withing userDAO.java it gives "application is not resolved"
========================================================================
String DBDriver = (String)application.getInitParameter("DBDriver");
NOTE: I understand I need to import some inbuilt java package which will allow to use applcation vars
within java class.
What is that package? and how to do that?
Is there any other easy method to use global/application vars which can be used in all
JSP/JavaBeans/Java files?
Thanks in advance.It might be easier to put that code somewhere else. JSP's are for presentation, not for accessing databases, business logic, etc.
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