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// Copyright (C) 2015 The Android Open Source Project
//
// 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 server
import (
"fmt"
"net/http"
"strconv"
"android.googlesource.com/platform/tools/gpu/atom"
"android.googlesource.com/platform/tools/gpu/database"
"android.googlesource.com/platform/tools/gpu/log"
"android.googlesource.com/platform/tools/gpu/service"
)
const (
captureParamName = "capture"
contextParamName = "ctx"
)
// AtomsHandler is an HTTP request handler that returns a human-readable description
// of the atoms for a given capture and context.
type atomsHandler struct {
database.Database
}
// ServeHTTP writes to res a human-readable plain text description for each of the
// atoms of the capture/context identified by their respective parameters, parsed
// from the given req query string.
func (h atomsHandler) ServeHTTP(res http.ResponseWriter, req *http.Request) {
captures, err := h.Captures()
if err != nil {
panic(err)
}
captureName := req.URL.Query().Get(captureParamName)
captureID, found := captures[captureName]
if !found {
http.NotFound(res, req)
return
}
var c service.Capture
if err := h.Load(captureID, log.Nop{}, &c); err != nil {
panic(err)
}
var stream service.AtomStream
if err := h.Load(c.Atoms.ID, log.Nop{}, &stream); err != nil {
panic(err)
}
atoms, err := stream.List()
if err != nil {
panic(err)
}
var contextID atom.ContextID
if ctx, err := strconv.ParseInt(req.URL.Query().Get(contextParamName), 10, 32); err == nil {
contextID = atom.ContextID(int(ctx))
}
res.Header().Add("Content-Type", "text/plain;charset=UTF-8")
for i, a := range atoms {
if a.ContextID() == contextID {
fmt.Fprintf(res, "%.6d %s\n", i, a)
}
}
}
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