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// Copyright 2015 Matthew Holt and The Caddy Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package httpcaddyfile
import (
"encoding/json"
"fmt"
"log"
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/caddy/v2/caddyconfig"
"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
"github.com/caddyserver/caddy/v2/modules/caddyhttp"
)
func (st *ServerType) parseMatcherDefinitions(d *caddyfile.Dispenser) (map[string]map[string]json.RawMessage, error) {
matchers := make(map[string]map[string]json.RawMessage)
for d.Next() {
definitionName := d.Val()
for d.NextBlock() {
matcherName := d.Val()
mod, err := caddy.GetModule("http.matchers." + matcherName)
if err != nil {
return nil, fmt.Errorf("getting matcher module '%s': %v", matcherName, err)
}
unm, ok := mod.New().(caddyfile.Unmarshaler)
if !ok {
return nil, fmt.Errorf("matcher module '%s' is not a Caddyfile unmarshaler", matcherName)
}
err = unm.UnmarshalCaddyfile(d.NewFromNextTokens())
if err != nil {
return nil, err
}
rm, ok := unm.(caddyhttp.RequestMatcher)
if !ok {
return nil, fmt.Errorf("matcher module '%s' is not a request matcher", matcherName)
}
if _, ok := matchers[definitionName]; !ok {
matchers[definitionName] = make(map[string]json.RawMessage)
}
matchers[definitionName][matcherName] = caddyconfig.JSON(rm, nil)
}
}
return matchers, nil
}
// directiveBuckets returns a list of middleware/handler directives.
// Buckets are ordered, and directives should be evaluated in their
// bucket order. Within a bucket, directives are not ordered. Hence,
// the return value has a slice of buckets, where each bucket is a
// map, which is a strongly-typed reminder that directives within a
// bucket are not ordered.
func directiveBuckets() []map[string]struct{} {
directiveBuckets := []map[string]struct{}{
// prefer odd-numbered buckets; evens are there for contingencies
{}, // 0
{}, // 1 - keep empty unless necessary
{}, // 2
{}, // 3 - first handlers, last responders
{}, // 4
{}, // 5 - middle of chain
{}, // 6
{}, // 7 - last handlers, first responders
{}, // 8
{}, // 9 - keep empty unless necessary
{}, // 10
}
for _, mod := range caddy.GetModules("http.handlers") {
if hd, ok := mod.New().(HandlerDirective); ok {
bucket := hd.Bucket()
if bucket < 0 || bucket >= len(directiveBuckets) {
log.Printf("[ERROR] directive %s: bucket out of range [0-%d): %d; skipping",
mod.Name, len(directiveBuckets), bucket)
continue
}
directiveBuckets[bucket][mod.ID()] = struct{}{}
}
}
return directiveBuckets
}
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