telegraf/plugins/outputs/http/http_test.go

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package http
import (
"fmt"
"net/http"
"net/http/httptest"
"net/url"
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"testing"
"time"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/metric"
"github.com/influxdata/telegraf/plugins/serializers/influx"
"github.com/stretchr/testify/require"
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)
func getMetric() telegraf.Metric {
m, err := metric.New(
"cpu",
map[string]string{},
map[string]interface{}{
"value": 42.0,
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},
time.Unix(0, 0),
)
if err != nil {
panic(err)
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}
return m
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}
func TestInvalidMethod(t *testing.T) {
plugin := &HTTP{
URL: "",
Method: http.MethodGet,
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}
err := plugin.Connect()
require.Error(t, err)
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}
func TestMethod(t *testing.T) {
ts := httptest.NewServer(http.NotFoundHandler())
defer ts.Close()
u, err := url.Parse(fmt.Sprintf("http://%s", ts.Listener.Addr().String()))
require.NoError(t, err)
tests := []struct {
name string
plugin *HTTP
expectedMethod string
connectError bool
}{
{
name: "default method is POST",
plugin: &HTTP{
URL: u.String(),
Method: defaultMethod,
},
expectedMethod: http.MethodPost,
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},
{
name: "put is okay",
plugin: &HTTP{
URL: u.String(),
Method: http.MethodPut,
},
expectedMethod: http.MethodPut,
},
{
name: "get is invalid",
plugin: &HTTP{
URL: u.String(),
Method: http.MethodGet,
},
connectError: true,
},
{
name: "method is case insensitive",
plugin: &HTTP{
URL: u.String(),
Method: "poST",
},
expectedMethod: http.MethodPost,
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},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
ts.Config.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, tt.expectedMethod, r.Method)
w.WriteHeader(http.StatusOK)
})
serializer := influx.NewSerializer()
tt.plugin.SetSerializer(serializer)
err = tt.plugin.Connect()
if tt.connectError {
require.Error(t, err)
return
}
require.NoError(t, err)
err = tt.plugin.Write([]telegraf.Metric{getMetric()})
require.NoError(t, err)
})
}
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}
func TestStatusCode(t *testing.T) {
ts := httptest.NewServer(http.NotFoundHandler())
defer ts.Close()
u, err := url.Parse(fmt.Sprintf("http://%s", ts.Listener.Addr().String()))
require.NoError(t, err)
tests := []struct {
name string
plugin *HTTP
statusCode int
errFunc func(t *testing.T, err error)
}{
{
name: "success",
plugin: &HTTP{
URL: u.String(),
},
statusCode: http.StatusOK,
errFunc: func(t *testing.T, err error) {
require.NoError(t, err)
},
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},
{
name: "1xx status is an error",
plugin: &HTTP{
URL: u.String(),
},
statusCode: 103,
errFunc: func(t *testing.T, err error) {
require.Error(t, err)
},
},
{
name: "3xx status is an error",
plugin: &HTTP{
URL: u.String(),
},
statusCode: http.StatusMultipleChoices,
errFunc: func(t *testing.T, err error) {
require.Error(t, err)
},
},
{
name: "4xx status is an error",
plugin: &HTTP{
URL: u.String(),
},
statusCode: http.StatusMultipleChoices,
errFunc: func(t *testing.T, err error) {
require.Error(t, err)
},
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},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
ts.Config.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(tt.statusCode)
})
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serializer := influx.NewSerializer()
tt.plugin.SetSerializer(serializer)
err = tt.plugin.Connect()
require.NoError(t, err)
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err = tt.plugin.Write([]telegraf.Metric{getMetric()})
tt.errFunc(t, err)
})
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}
}
func TestContentType(t *testing.T) {
ts := httptest.NewServer(http.NotFoundHandler())
defer ts.Close()
u, err := url.Parse(fmt.Sprintf("http://%s", ts.Listener.Addr().String()))
require.NoError(t, err)
tests := []struct {
name string
plugin *HTTP
expected string
}{
{
name: "default is text plain",
plugin: &HTTP{
URL: u.String(),
},
expected: defaultContentType,
},
{
name: "overwrite content_type",
plugin: &HTTP{
URL: u.String(),
Headers: map[string]string{"Content-Type": "application/json"},
},
expected: "application/json",
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},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
ts.Config.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, tt.expected, r.Header.Get("Content-Type"))
w.WriteHeader(http.StatusOK)
})
serializer := influx.NewSerializer()
tt.plugin.SetSerializer(serializer)
err = tt.plugin.Connect()
require.NoError(t, err)
err = tt.plugin.Write([]telegraf.Metric{getMetric()})
require.NoError(t, err)
})
}
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}
func TestBasicAuth(t *testing.T) {
ts := httptest.NewServer(http.NotFoundHandler())
defer ts.Close()
u, err := url.Parse(fmt.Sprintf("http://%s", ts.Listener.Addr().String()))
require.NoError(t, err)
tests := []struct {
name string
plugin *HTTP
}{
{
name: "default",
plugin: &HTTP{
URL: u.String(),
},
},
{
name: "username only",
plugin: &HTTP{
URL: u.String(),
Username: "username",
},
},
{
name: "password only",
plugin: &HTTP{
URL: u.String(),
Password: "pa$$word",
},
},
{
name: "username and password",
plugin: &HTTP{
URL: u.String(),
Username: "username",
Password: "pa$$word",
},
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},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
ts.Config.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
username, password, _ := r.BasicAuth()
require.Equal(t, tt.plugin.Username, username)
require.Equal(t, tt.plugin.Password, password)
w.WriteHeader(http.StatusOK)
})
serializer := influx.NewSerializer()
tt.plugin.SetSerializer(serializer)
err = tt.plugin.Connect()
require.NoError(t, err)
err = tt.plugin.Write([]telegraf.Metric{getMetric()})
require.NoError(t, err)
})
}
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}
type TestHandlerFunc func(t *testing.T, w http.ResponseWriter, r *http.Request)
func TestOAuthClientCredentialsGrant(t *testing.T) {
ts := httptest.NewServer(http.NotFoundHandler())
defer ts.Close()
var token = "2YotnFZFEjr1zCsicMWpAA"
u, err := url.Parse(fmt.Sprintf("http://%s", ts.Listener.Addr().String()))
require.NoError(t, err)
tests := []struct {
name string
plugin *HTTP
tokenHandler TestHandlerFunc
handler TestHandlerFunc
}{
{
name: "no credentials",
plugin: &HTTP{
URL: u.String(),
},
handler: func(t *testing.T, w http.ResponseWriter, r *http.Request) {
require.Len(t, r.Header["Authorization"], 0)
w.WriteHeader(http.StatusOK)
},
},
{
name: "success",
plugin: &HTTP{
URL: u.String() + "/write",
ClientID: "howdy",
ClientSecret: "secret",
TokenURL: u.String() + "/token",
Scopes: []string{"urn:opc:idm:__myscopes__"},
},
tokenHandler: func(t *testing.T, w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
values := url.Values{}
values.Add("access_token", token)
values.Add("token_type", "bearer")
values.Add("expires_in", "3600")
w.Write([]byte(values.Encode()))
},
handler: func(t *testing.T, w http.ResponseWriter, r *http.Request) {
require.Equal(t, []string{"Bearer " + token}, r.Header["Authorization"])
w.WriteHeader(http.StatusOK)
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
ts.Config.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.URL.Path {
case "/write":
tt.handler(t, w, r)
case "/token":
tt.tokenHandler(t, w, r)
}
})
serializer := influx.NewSerializer()
tt.plugin.SetSerializer(serializer)
err = tt.plugin.Connect()
require.NoError(t, err)
err = tt.plugin.Write([]telegraf.Metric{getMetric()})
require.NoError(t, err)
})
}
}