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Under construction
Full user data logging
All available user data in request and session scope are recorded and store into the database.
Platform indepentence
JHttpLog is a portable Java library that can run on any Servlet 2.3 compliant J2EE servers. It will be tested in the follow J2EE platfroms:
| Catagory |
Product |
Note |
Status |
| Commercial |
BEA Weblogic 7.0 |
The best J2EE Server |
To be tested
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IBM Websphere 5.0 |
The 2nd best |
To be tested
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Sun SunONE Application Server (platform edition) |
Free license commercial product |
To be tested
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| Public |
Apache Jakarta Tomcat 4.1 |
The most popular servlet engine |
Tested |
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Jetty |
Open source servlet engine |
To be tested
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Interoperability
JHttpLog follows the following standards and is interoperable with any applications that support the standards
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JSR52 Java Servlet 2.3
JHttpLog is fully compliant to JSR52 Java Servlet standards and works in any Java Servlet 2.3 compliant servlet engine
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JSR12 Java Data Object (JDO)
Java Data Object. Any database can be used as long as it is supported by the JDO implementation
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IETF RFC 2068 HTTP 1.1 Protocol
HTTP 1.1 Protocol
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W3C Common and Extended Log Format
Log format.
Not completed yet
Process Model
| Input |
- Session: Session ID, creation time, destroy time
- HttpRequest: RFC 2068 data
- (Optional) JavaScript collector
- (Optional) Java Applet collector
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| Processing |
- Extract data from HttpSession and HttpRequest to Value Objects
- (Optional) Perform query to Internet Address Registries
- (Optional) Email notification
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| Output |
- Return boolean value true if criterial processes are successful
- Log application process to Log File, depends on the defined log level
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| Storage |
- Store all collected information to the database. One record for each session.
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Implementation Details
| JHttpLogManager |
- Responsible for maintaining a list of active session and
- Implement as a Singleton
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| JHttpLogSessionListener |
- Register an session to the LogManager
- Notify the LogManager upon session destroy
- Implements javax.servlet.http.HttpSessionListener
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| JHttpLogFilter |
- Process each request to get the first request for data collection
- By default, it filters all requests. It is configurable to filter HTTP request to specific URL by URL Pattern to optimize performance. (it depends on the site design)
- Implements javax.servlet.Filter
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Operation
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Description
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State Diagram
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HTTP Logging Manager (manager) manages the HTTP Logging tasks throughout the lifecycle of a session.
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Initially, there is no existing HTTP Log Data (data)
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A session is registered to the manager. A piece of data is created for the session
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At the first request after the session is created, the request is passed to the manager and HTTP header data are extracted and stored to the piece of data .
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In proceeding request, no action is taken.
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Upon destroy of the session, the manager clean up the session entry by persisting the data and remove the session entry.
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