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add logging middleware for server #785

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merged 5 commits into from
May 31, 2021
Merged

add logging middleware for server #785

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c57b205
added logging middleware
devang-gaur May 18, 2021
3312117
fixed validation errors
devang-gaur May 18, 2021
98d19b3
addressed pr review comments
devang-gaur May 20, 2021
2b9a8e8
addressed more pr review comments
devang-gaur May 24, 2021
1282b93
addressed more pr review comments
devang-gaur May 31, 2021
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1 change: 1 addition & 0 deletions go.mod
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ replace (

require (
github.com/ghodss/yaml v1.0.0
github.com/gorilla/handlers v1.5.1
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github.com/gorilla/mux v1.8.0
github.com/hashicorp/go-cleanhttp v0.5.1
github.com/hashicorp/go-getter v1.5.1
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10 changes: 4 additions & 6 deletions go.sum
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Original file line number Diff line number Diff line change
Expand Up @@ -263,6 +263,8 @@ github.com/evanphx/json-patch v4.9.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLi
github.com/exponent-io/jsonpath v0.0.0-20151013193312-d6023ce2651d/go.mod h1:ZZMPRZwes7CROmyNKgQzC3XPs6L/G2EJLHddWejkmf4=
github.com/fatih/camelcase v1.0.0/go.mod h1:yN2Sb0lFhZJUdVvtELVWefmrXpuZESvPmqwoZc+/fpc=
github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
github.com/felixge/httpsnoop v1.0.1 h1:lvB5Jl89CsZtGIWuTcDM1E/vkVs49/Ml7JJe07l8SPQ=
github.com/felixge/httpsnoop v1.0.1/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 h1:BHsljHzVlRcyQhjrss6TZTdY2VfCqZPbv5k3iBFa2ZQ=
github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
github.com/franela/goblin v0.0.0-20200105215937-c9ffbefa60db/go.mod h1:7dvUGVsVBjqR7JHJk0brhHOZYGmfBYOrK0ZhYMEtBr4=
Expand Down Expand Up @@ -449,6 +451,8 @@ github.com/gophercloud/utils v0.0.0-20200423144003-7c72efc7435d/go.mod h1:ehWUbL
github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
github.com/gorilla/context v1.1.1/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51q0aT7Yg=
github.com/gorilla/handlers v0.0.0-20150720190736-60c7bfde3e33/go.mod h1:Qkdc/uu4tH4g6mTK6auzZ766c4CA0Ng8+o/OAirnOIQ=
github.com/gorilla/handlers v1.5.1 h1:9lRY6j8DEeeBT10CvO9hGW0gmky0BprnvDI5vfhUHH4=
github.com/gorilla/handlers v1.5.1/go.mod h1:t8XrUpc4KVXb7HGyJ4/cEnwQiaxrX/hz1Zv/4g96P1Q=
github.com/gorilla/mux v0.0.0-20181024020800-521ea7b17d02/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
github.com/gorilla/mux v1.6.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
github.com/gorilla/mux v1.7.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
Expand Down Expand Up @@ -1155,8 +1159,6 @@ golang.org/x/sys v0.0.0-20210113181707-4bcb84eeeb78/go.mod h1:h1NjWce9XRLGQEsW7w
golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20210511113859-b0526f3d8744 h1:yhBbb4IRs2HS9PPlAg6DMC6mUOKexJBNsLf4Z+6En1Q=
golang.org/x/sys v0.0.0-20210511113859-b0526f3d8744/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20210525143221-35b2ab0089ea h1:+WiDlPBBaO+h9vPNZi8uJ3k4BkKQB7Iow3aqwHVA5hI=
golang.org/x/sys v0.0.0-20210525143221-35b2ab0089ea/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
Expand Down Expand Up @@ -1233,8 +1235,6 @@ golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc
golang.org/x/tools v0.0.0-20200904185747-39188db58858/go.mod h1:Cj7w3i3Rnn0Xh82ur9kSqwfTHTeVxaDqrfMjpcNT6bE=
golang.org/x/tools v0.0.0-20201028111035-eafbe7b904eb/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
golang.org/x/tools v0.1.1 h1:wGiQel/hW0NnEkJUk8lbzkX2gFJU6PFxf1v5OlCfuOs=
golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
golang.org/x/tools v0.1.2 h1:kRBLX7v7Af8W7Gdbbc908OJcdgtK8bOz9Uaj8/F1ACA=
golang.org/x/tools v0.1.2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
Expand Down Expand Up @@ -1391,8 +1391,6 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
honnef.co/go/tools v0.1.4/go.mod h1:NgwopIslSNH47DimFoV78dnkksY2EFtX0ajyb3K/las=
honnef.co/go/tools v0.2.0 h1:ws8AfbgTX3oIczLPNPCu5166oBg9ST2vNs0rcht+mDE=
honnef.co/go/tools v0.2.0/go.mod h1:lPVVZ2BS5TfnjLyizF7o7hv7j9/L+8cZY2hLyjP9cGY=
k8s.io/api v0.19.0 h1:XyrFIJqTYZJ2DU7FBE/bSPz7b1HvbVBuBf07oeo6eTc=
k8s.io/api v0.19.0/go.mod h1:I1K45XlvTrDjmj5LoM5LuP/KYrhWbjUKT/SoPG0qTjw=
Expand Down
28 changes: 27 additions & 1 deletion pkg/http-server/start.go
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,9 @@ package httpserver

import (
"context"
httputils "github.com/accurics/terrascan/pkg/utils/http"
gorillaHandlers "github.com/gorilla/handlers"
"go.uber.org/zap"
"net/http"
"os"
"os/signal"
Expand Down Expand Up @@ -54,6 +57,8 @@ func (g *APIServer) start(routes []*Route, port, certFile, privateKeyFile string
router = mux.NewRouter() // new router
)

logWriter := getLogWriter(logger)

logger.Info("registering routes...")

if privateKeyFile != "" || certFile != "" {
Expand All @@ -67,9 +72,13 @@ func (g *APIServer) start(routes []*Route, port, certFile, privateKeyFile string
// register all routes
for _, v := range routes {
logger.Info("Route ", v.verb, " - ", v.path)
router.Methods(v.verb).Path(v.path).HandlerFunc(v.fn)
handler := gorillaHandlers.LoggingHandler(logWriter, http.HandlerFunc(v.fn))
router.Methods(v.verb).Path(v.path).Handler(handler)
}

router.NotFoundHandler = gorillaHandlers.LoggingHandler(logWriter, http.HandlerFunc(httputils.NotFound))
router.MethodNotAllowedHandler = gorillaHandlers.LoggingHandler(logWriter, http.HandlerFunc(httputils.NotAllowed))

// Add a route for all static templates / assets. Currently used for the Webhook logs views
// go/terrascan/asset is the path where the assets files are located inside the docker container
router.PathPrefix("/assets/").Handler(http.StripPrefix("/assets/", http.FileServer(http.Dir("/go/terrascan/assets"))))
Expand Down Expand Up @@ -114,3 +123,20 @@ func (g *APIServer) start(routes []*Route, port, certFile, privateKeyFile string
}
logger.Info("server exiting gracefully")
}

type logWriter struct {
logger *zap.SugaredLogger
}

// GetLogWriter creates and fetches a LogWriter object
func getLogWriter(logger *zap.SugaredLogger) logWriter {
return logWriter{
logger: logger,
}
}

// Write writes the byte array to the logger object
func (l logWriter) Write(p []byte) (n int, err error) {
l.logger.Info(string(p))
return len(p), nil
}
29 changes: 29 additions & 0 deletions pkg/utils/http/response.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,29 @@
/*
Copyright (C) 2020 Accurics, Inc.

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 httputils
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import "net/http"

// NotFound writes 404 to the write object
func NotFound(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotFound)
}

// NotAllowed writes 405 to the writer object
func NotAllowed(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusMethodNotAllowed)
}