127 lines
3.2 KiB
Go
127 lines
3.2 KiB
Go
/*
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Copyright 2018 The Fission Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package redis
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"net/url"
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"os"
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"strings"
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"github.com/golang/protobuf/proto"
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"github.com/gomodule/redigo/redis"
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"github.com/pkg/errors"
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"go.uber.org/zap"
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"github.com/fission/fission/pkg/redis/build/gen"
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)
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func NewClient() (redis.Conn, error) {
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redisIP := os.Getenv("REDIS_SERVICE_HOST") // TODO: Do this here or somewhere earlier?
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redisPort := os.Getenv("REDIS_SERVICE_PORT")
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if len(redisIP) == 0 || len(redisPort) == 0 {
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return nil, errors.New("redis host or port not supplied")
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}
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redisURL := fmt.Sprintf("%s:%s", redisIP, redisPort)
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c, err := redis.Dial("tcp", redisURL)
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if err != nil {
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return nil, errors.Wrapf(err, "could not connect to Redis at url %q", redisURL)
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}
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return c, nil
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}
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func Record(logger *zap.Logger, triggerName string, recorderName string, reqUID string, request *http.Request, originalUrl url.URL, payload string, response *http.Response, namespace string, timestamp int64) {
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// Case where the function should not have been recorded
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if len(reqUID) == 0 {
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return
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}
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fullPath := originalUrl.String()
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escPayload := string(json.RawMessage(payload))
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client, err := NewClient()
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if err != nil {
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logger.Error("could not create redis client", zap.Error(err))
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return
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}
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url := make(map[string]string)
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url["Host"] = request.URL.Host
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url["Path"] = fullPath
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url["Payload"] = escPayload
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header := make(map[string]string)
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for key, value := range request.Header {
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header[key] = strings.Join(value, ",")
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}
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form := make(map[string]string)
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for key, value := range request.Form {
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form[key] = strings.Join(value, ",")
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}
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postForm := make(map[string]string)
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for key, value := range request.PostForm {
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postForm[key] = strings.Join(value, ",")
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}
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req := &redisCache.Request{
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Method: request.Method,
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URL: url,
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Header: header,
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Host: request.Host, // Proxied host?
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Form: form,
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PostForm: postForm,
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}
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logger.Info("storing request", zap.Any("request", req))
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resp := &redisCache.Response{
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Status: response.Status,
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StatusCode: int32(response.StatusCode),
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}
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ureq := &redisCache.UniqueRequest{
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Req: req,
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Resp: resp,
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Trigger: triggerName,
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}
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data, err := proto.Marshal(ureq)
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if err != nil {
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logger.Error("error marshalling request", zap.Error(err))
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return
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}
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_, err = client.Do("HMSET", reqUID, "ReqResponse", data, "Timestamp", timestamp, "Trigger", triggerName)
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if err != nil {
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logger.Error("error saving request", zap.Error(err))
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return
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}
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_, err = client.Do("LPUSH", recorderName, reqUID)
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if err != nil {
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logger.Error("error saving recorder-request pair", zap.Error(err))
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return
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}
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}
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