func NewFilter(config *Config) (filters.Filter, error) {
f1, err := filters.GetFilter(config.Transport)
if err != nil {
return nil, err
}
f2, ok := f1.(filters.RoundTripFilter)
if !ok {
return nil, fmt.Errorf("%#v was not a filters.RoundTripFilter", f1)
}
fetchServers := make([]*FetchServer, 0)
for _, appid := range config.AppIds {
u, err := url.Parse(fmt.Sprintf("%s://%s.%s%s", config.Scheme, appid, config.Domain, config.Path))
if err != nil {
return nil, err
}
fs := &FetchServer{
URL: u,
Password: config.Password,
SSLVerify: config.SSLVerify,
}
fetchServers = append(fetchServers, fs)
}
return &Filter{
FetchServers: fetchServers,
Transport: f2,
Sites: httpproxy.NewHostMatcher(config.Sites),
}, nil
}
func getFilters(config *Config) ([]filters.RequestFilter, []filters.RoundTripFilter, []filters.ResponseFilter) {
fs := make(map[string]filters.Filter)
for _, names := range [][]string{config.Filters.Request,
config.Filters.RoundTrip,
config.Filters.Response} {
for _, name := range names {
if _, ok := fs[name]; !ok {
f, err := filters.GetFilter(name)
if err != nil {
glog.Fatalf("filters.GetFilter(%#v) failed: %#v", name, err)
}
fs[name] = f
}
}
}
requestFilters := make([]filters.RequestFilter, 0)
for _, name := range config.Filters.Request {
f := fs[name]
f1, ok := f.(filters.RequestFilter)
if !ok {
glog.Fatalf("%#v is not a RequestFilter", f)
}
requestFilters = append(requestFilters, f1)
}
roundtripFilters := make([]filters.RoundTripFilter, 0)
for _, name := range config.Filters.RoundTrip {
f := fs[name]
f1, ok := f.(filters.RoundTripFilter)
if !ok {
glog.Fatalf("%#v is not a RoundTripFilter", f)
}
roundtripFilters = append(roundtripFilters, f1)
}
responseFilters := make([]filters.ResponseFilter, 0)
for _, name := range config.Filters.Response {
f := fs[name]
f1, ok := f.(filters.ResponseFilter)
if !ok {
glog.Fatalf("%#v is not a ResponseFilter", f)
}
responseFilters = append(responseFilters, f1)
}
return requestFilters, roundtripFilters, responseFilters
}