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decoder_test.go
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// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you 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 decoder_test
import (
"bytes"
"compress/gzip"
"io"
"io/ioutil"
"mime/multipart"
"net/http"
"strings"
"testing"
"github.com/stretchr/testify/assert"
"github.com/elastic/apm-server/decoder"
"github.com/elastic/apm-server/tests/loader"
)
func TestDecode(t *testing.T) {
transactionBytes, err := loader.LoadValidDataAsBytes("transaction")
assert.Nil(t, err)
data, err := decoder.DecodeJSONData(ioutil.NopCloser(bytes.NewReader(transactionBytes)))
assert.Nil(t, err)
req, err := http.NewRequest("POST", "_", bytes.NewReader(transactionBytes))
req.Header.Add("Content-Type", "application/json")
assert.Nil(t, err)
body, err := decoder.DecodeLimitJSONData(1024 * 1024)(req)
assert.Nil(t, err)
assert.Equal(t, data, body)
}
func TestDecodeContentType(t *testing.T) {
transactionBytes, err := loader.LoadValidDataAsBytes("transaction")
assert.Nil(t, err)
data, err := decoder.DecodeJSONData(ioutil.NopCloser(bytes.NewReader(transactionBytes)))
assert.Nil(t, err)
req, err := http.NewRequest("POST", "_", bytes.NewReader(transactionBytes))
req.Header.Add("Content-Type", "application/json; charset=UTF-8")
assert.Nil(t, err)
body, err := decoder.DecodeLimitJSONData(1024 * 1024)(req)
assert.Nil(t, err)
assert.Equal(t, data, body)
}
func TestDecodeSizeLimit(t *testing.T) {
minimalValid := func() *http.Request {
req, err := http.NewRequest("POST", "_", strings.NewReader("{}"))
assert.Nil(t, err)
req.Header.Add("Content-Type", "application/json")
return req
}
// just fits
_, err := decoder.DecodeLimitJSONData(2)(minimalValid())
assert.Nil(t, err)
// too large, should not be EOF
_, err = decoder.DecodeLimitJSONData(1)(minimalValid())
assert.NotNil(t, err)
assert.NotEqual(t, err, io.EOF)
}
func TestDecodeSizeLimitGzip(t *testing.T) {
gzipBody := func(body string) []byte {
var buf bytes.Buffer
zw := gzip.NewWriter(&buf)
_, err := zw.Write([]byte("{}"))
assert.Nil(t, err)
err = zw.Close()
assert.Nil(t, err)
return buf.Bytes()
}
gzipRequest := func(body []byte) *http.Request {
req, err := http.NewRequest("POST", "_", bytes.NewReader(body))
assert.Nil(t, err)
req.Header.Add("Content-Type", "application/json")
req.Header.Add("Content-Encoding", "gzip")
return req
}
// compressed size < uncompressed (usual case)
bigData := `{"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa": 1}`
bigDataGz := gzipBody(bigData)
if len(bigDataGz) > len(bigData) {
t.Fatal("compressed data unexpectedly big")
}
/// uncompressed just fits
_, err := decoder.DecodeLimitJSONData(40)(gzipRequest(bigDataGz))
assert.Nil(t, err)
/// uncompressed too big
_, err = decoder.DecodeLimitJSONData(1)(gzipRequest(bigDataGz))
assert.NotNil(t, err)
assert.NotEqual(t, err, io.EOF)
// compressed size > uncompressed (edge case)
tinyData := "{}"
tinyDataGz := gzipBody(tinyData)
if len(tinyDataGz) < len(tinyData) {
t.Fatal("compressed data unexpectedly small")
}
/// uncompressed just fits
_, err = decoder.DecodeLimitJSONData(2)(gzipRequest(tinyDataGz))
assert.Nil(t, err)
/// uncompressed too big
_, err = decoder.DecodeLimitJSONData(1)(gzipRequest(tinyDataGz))
assert.NotNil(t, err)
assert.NotEqual(t, err, io.EOF)
}
func TestDecodeSourcemapFormData(t *testing.T) {
body := &bytes.Buffer{}
writer := multipart.NewWriter(body)
fileBytes, err := loader.LoadDataAsBytes("../testdata/sourcemap/bundle.js.map")
assert.NoError(t, err)
part, err := writer.CreateFormFile("sourcemap", "bundle_no_mapping.js.map")
assert.NoError(t, err)
_, err = io.Copy(part, bytes.NewReader(fileBytes))
assert.NoError(t, err)
writer.WriteField("bundle_filepath", "js/./test/../bundle_no_mapping.js.map")
writer.WriteField("service_name", "My service")
writer.WriteField("service_version", "0.1")
err = writer.Close()
assert.NoError(t, err)
req, err := http.NewRequest("POST", "_", body)
req.Header.Set("Content-Type", writer.FormDataContentType())
assert.NoError(t, err)
assert.NoError(t, err)
data, err := decoder.DecodeSourcemapFormData(req)
assert.NoError(t, err)
assert.Len(t, data, 4)
assert.Equal(t, "js/bundle_no_mapping.js.map", data["bundle_filepath"])
assert.Equal(t, "My service", data["service_name"])
assert.Equal(t, "0.1", data["service_version"])
assert.NotNil(t, data["sourcemap"].(string))
assert.Equal(t, len(fileBytes), len(data["sourcemap"].(string)))
}
func TestDecodeSystemData(t *testing.T) {
type test struct {
augment bool
remoteAddr string
expectIP string
}
tests := []test{
{augment: false, remoteAddr: "1.2.3.4:1234"},
{augment: true, remoteAddr: "1.2.3.4:1234", expectIP: "1.2.3.4"},
{augment: true, remoteAddr: "not-an-ip:1234"},
{augment: true, remoteAddr: ""},
}
for _, test := range tests {
transactionBytes, err := loader.LoadValidDataAsBytes("transaction")
assert.Nil(t, err)
buffer := bytes.NewReader(transactionBytes)
req, err := http.NewRequest("POST", "_", buffer)
req.Header.Add("Content-Type", "application/json")
req.RemoteAddr = test.remoteAddr
assert.Nil(t, err)
body, err := decoder.DecodeSystemData(decoder.DecodeLimitJSONData(1024*1024), test.augment)(req)
assert.Nil(t, err)
system, hasSystem := body["system"].(map[string]interface{})
assert.True(t, hasSystem)
if test.expectIP == "" {
assert.NotContains(t, system, "ip")
} else {
assert.Equal(t, test.expectIP, system["ip"])
}
}
}
func TestDecodeUserData(t *testing.T) {
type test struct {
augment bool
remoteAddr string
expectIP string
}
tests := []test{
{augment: false, remoteAddr: "1.2.3.4:1234"},
{augment: true, remoteAddr: "1.2.3.4:1234", expectIP: "1.2.3.4"},
{augment: true, remoteAddr: "not-an-ip:1234"},
{augment: true, remoteAddr: ""},
}
for _, test := range tests {
transactionBytes, err := loader.LoadValidDataAsBytes("transaction")
assert.Nil(t, err)
buffer := bytes.NewReader(transactionBytes)
req, err := http.NewRequest("POST", "_", buffer)
req.Header.Add("Content-Type", "application/json")
req.RemoteAddr = test.remoteAddr
assert.Nil(t, err)
body, err := decoder.DecodeUserData(decoder.DecodeLimitJSONData(1024*1024), test.augment)(req)
assert.Nil(t, err)
user, hasUser := body["user"].(map[string]interface{})
assert.Equal(t, test.augment, hasUser)
_, hasUserAgent := user["user-agent"]
assert.Equal(t, test.augment, hasUserAgent)
if test.expectIP == "" {
assert.NotContains(t, user, "ip")
} else {
assert.Equal(t, test.expectIP, user["ip"])
}
}
}