Web Services Gateway Dynamic Path Matching
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Solution Overview
Problem
Managing access to resources in a web services system is challenging due to dynamic API paths and the need to match incoming HTTP requests to canonical API paths, leading to time delays and inefficiencies, especially when service providers are in private networks and requestors are in public networks.
Innovation Solution
A gateway system that identifies the method type and path component count of a uniform resource identifier, successively matches path components to corresponding character sequences, and generates context resource identifiers for efficient routing of requests, decoupling from dynamic changes in API paths and ensuring authorization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If canonical API paths include dynamic path components to enable flexible resource referencing, then adaptability is improved, but path matching complexity increases
Solution Approach 1:
The gateway segments the uniform resource identifier into multiple path components and processes them sequentially. Each path component is matched against corresponding character sequences in the canonical API path, breaking down the complex matching problem into manageable discrete steps that reduce overall matching complexity while preserving adaptability to dynamic paths.
Solution Approach 2:
The system changes the parameter representation from complete path strings to individual path components and character sequences. By transforming the matching problem into comparing discrete parameter elements rather than entire paths, the system reduces matching complexity while maintaining the ability to handle dynamic path components through flexible sequence matching.
2Reliability
If traditional path matching methods are used to match incoming HTTP requests to canonical API paths, then authorization can be enforced, but time delays increase
Solution Approach 1:
The gateway performs preliminary actions by pre-processing and storing canonical API paths as character sequences with defined patterns before request arrival. When a request comes in, the matching process leverages these pre-prepared sequences, enabling faster authorization checks without sacrificing enforcement reliability, as the heavy lifting of path analysis is done in advance.
Solution Approach 2:
The system creates simplified copies of the canonical API paths in the form of character sequences that capture the essential matching patterns without the full complexity of the original paths. These copied representations enable rapid comparison and matching operations while maintaining authorization enforcement, as the critical path structure is preserved in the simplified form.
Data Source
AI summary
A method and apparatus for facilitating access to a resource. A gateway receives a request from a client. The request includes a uniform resource identifier that references an interface associated with the resource. The gateway identifies a method type of the request and a path component count of path components in the uniform resource identifier. The gateway successively matches path components of the uniform resource identifier to a corresponding character sequence in a set of candidate sequences. The set of candidate sequences is identified based on the method type, the path component count, and any previously matched corresponding character sequences. The gateway identifies a context resource identifiers for the resource based on the method type, the path component count, and the matched corresponding character sequences. The gateway sends the request to the resource according to the context resource identifiers.