caching_http_client

type CachingRoundTripper struct {
	Cache RequestResponseCache
	// this is RoundTripper to use to make the actual request
	// if nil, will use http.DefaultTransport
	RoundTripper http.RoundTripper

	// for diagnostics, you can check how many http requests
	// were served from a cache and how many from network requests
	RequestsFromCache    int `json:"-"`
	RequestsNotFromCache int `json:"-"`
}

type MemoryCache struct {
	// CachedRequests remembers past requests and their responses
	CachedRequests []*RequestResponse `json:"cached_requests"`

	// if true, will not return cached responses (but will still
	// record requests / responses)
	// Useful for tracing requests (but only those that return 200)
	DisableRespondingFromCache bool

	// if true, when comparing body of the request, and the body
	// is json, we'll normalize JSON
	CompareNormalizedJSONBody bool
}

type RequestResponse struct {
	Method string `json:"method"`
	URL    string `json:"url"`
	Body   []byte `json:"body"`

	Response []byte      `json:"response"`
	Header   http.Header `json:"header"`
}

type RequestResponseCache interface {
	Add(rr *RequestResponse)
	FindCachedResponse(r *http.Request, cachedBody *[]byte) (*RequestResponse, error)
}