Error Handling System
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about hiring developers or posting ads with us Programmers Questions Tags Users Badges Unanswered Ask Question _ Programmers Stack error handling php Exchange is a question and answer site for professional programmers interested in conceptual questions about software development. Join them; it only takes a minute: Sign up Here's how it works: Anybody can http://searchsoftwarequality.techtarget.com/definition/error-handling ask a question Anybody can answer The best answers are voted up and rise to the top The modern way to perform error handling… up vote 104 down vote favorite 30 I've been pondering this problem for a while now and find myself continually finding caveats and contradictions, so I'm hoping someone can produce a conclusion to the following: Favour exceptions over error http://programmers.stackexchange.com/questions/147059/the-modern-way-to-perform-error-handling codes As far as I'm aware, from working in the industry for four years, reading books and blogs, etc. the current best practice for handling errors is to throw exceptions, rather than returning error codes (not necessarily an error code, but a type representing an error). But - to me this seems to contradict... Coding to interfaces, not implementations We code to interfaces or abstractions to reduce coupling. We don't know, or want to know, the specific type and implementation of an interface. So how can we possibly know what exceptions we should be looking to catch? The implementation could throw 10 different exceptions, or it could throw none. When we catch an exception surely we're making assumptions about the implementation? Unless - the interface has... Exception specifications Some languages allow developers to state that certain methods throw certain exceptions (Java for example, uses the throws keyword.) From the calling code's point of view this seems fine - we know explicitly which exceptions we might need to catch. But - this seems to suggest a... Leaky abstraction Why should an interface specify which exceptions can be thrown? What
Debug errors 6.3 Exception handling 6.4 Functional return values 7 Detailed error messages 7.1 How to determine if you are vulnerable 7.2 How to protect https://www.owasp.org/index.php/Error_Handling,_Auditing_and_Logging yourself 8 Logging 8.1 Where to log to? 8.2 Handling 8.3 General Debugging 8.4 Forensics evidence 8.5 Attack detection 8.6 Quality of service 8.7 Proof of validity 8.8 Logging types 9 Noise 9.1 How to protect yourself 10 Cover Tracks 10.1 How to protect yourself 11 False Alarms 11.1 How to protect yourself 11.2 Denial of Service 11.3 How to error handling protect yourself 12 Destruction 12.1 How to protect yourself 13 Audit Trails 13.1 How to determine if you are vulnerable 13.2 How to protect yourself 14 Further Reading 15 Error Handling and Logging Objective Many industries are required by legal and regulatory requirements to be: Auditable – all activities that affect user state or balances are formally tracked Traceable – it’s error handling in possible to determine where an activity occurs in all tiers of the application High integrity – logs cannot be overwritten or tampered with by local or remote users Well-written applications will dual-purpose logs and activity traces for audit and monitoring, and make it easy to track a transaction without excessive effort or access to the system. They should possess the ability to easily track or identify potential fraud or anomalies end-to-end. Environments Affected All. Relevant COBIT Topics DS11 – Manage Data – All sections should be reviewed, but in particular: DS11.4 Source data error handling DS11.8 Data input error handling Description Error handling, debug messages, auditing and logging are different aspects of the same topic: how to track events within an application: Best practices Fail safe – do not fail open Dual purpose logs Audit logs are legally protected – protect them Reports and search logs using a read-only copy or complete replica Error Handling Error handling takes two forms: structured exception handling and functional error checking. Structured exception handling is always preferred as it is easier to cover 10
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