Interceptors are pluggable modules that can interact with the following data provider (collection) methods:

• Provider#insert
• Provider#upsert
• Provider#update
• Provider#delete
• Provider#get
• Provider#select

Interceptors work very similarly to Connect middleware. They use the same concept to allow pluggable modules to alter the input arguments and the output result of the intercepted methods. They operate at the lowest possible level above the native drivers, which makes them suitable place for cross-cutting concerns logic such as data access authorization, caching and logging.

Bundled interceptors:

• module:cache - Allows multi-tiered caching of results.
• module:log - Allows logging of activities and performance.

External interceptors:

• AuthorityJS - Allows authorization of method calls via predefined rules or ACL.

Example:

    var entree  = require("entree"),
        cache     = entree.resolveInterceptor("cache"),
        stores    = [
            { store: "memory", max: 1000, ttl: 10 },
            { store: require("./redis_store"), db: 0, ttl: 100 }
        ];

    entree.posts.use(cache.interception(stores, ["get"]));

Custom Interceptors

// TODO: Explain custom interceptors. [2014-01-12]