telegraf/plugins/inputs/httpjson/httpjson_test.go

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package httpjson
import (
"fmt"
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"io/ioutil"
"net/http"
"net/http/httptest"
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"strings"
"testing"
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"github.com/influxdata/telegraf/testutil"
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"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
const validJSON = `
{
"parent": {
"child": 3.0,
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"ignored_child": "hi"
},
"ignored_null": null,
"integer": 4,
"list": [3, 4],
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"ignored_parent": {
"another_ignored_null": null,
"ignored_string": "hello, world!"
},
"another_list": [4]
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}`
const validJSON2 = `{
"user":{
"hash_rate":0,
"expected_24h_rewards":0,
"total_rewards":0.000595109232,
"paid_rewards":0,
"unpaid_rewards":0.000595109232,
"past_24h_rewards":0,
"total_work":"5172625408",
"blocks_found":0
},
"workers":{
"brminer.1":{
"hash_rate":0,
"hash_rate_24h":0,
"valid_shares":"6176",
"stale_shares":"0",
"invalid_shares":"0",
"rewards":4.5506464e-5,
"rewards_24h":0,
"reset_time":1455409950
},
"brminer.2":{
"hash_rate":0,
"hash_rate_24h":0,
"valid_shares":"0",
"stale_shares":"0",
"invalid_shares":"0",
"rewards":0,
"rewards_24h":0,
"reset_time":1455936726
},
"brminer.3":{
"hash_rate":0,
"hash_rate_24h":0,
"valid_shares":"0",
"stale_shares":"0",
"invalid_shares":"0",
"rewards":0,
"rewards_24h":0,
"reset_time":1455936733
}
},
"pool":{
"hash_rate":114100000,
"active_users":843,
"total_work":"5015346808842682368",
"pps_ratio":1.04,
"pps_rate":7.655e-9
},
"network":{
"hash_rate":1426117703,
"block_number":944895,
"time_per_block":156,
"difficulty":51825.72835216,
"next_difficulty":51916.15249019,
"retarget_time":95053
},
"market":{
"ltc_btc":0.00798,
"ltc_usd":3.37801,
"ltc_eur":3.113,
"ltc_gbp":2.32807,
"ltc_rub":241.796,
"ltc_cny":21.3883,
"btc_usd":422.852
}
}`
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const validJSONTags = `
{
"value": 15,
"role": "master",
"build": "123"
}`
var expectedFields = map[string]interface{}{
"parent_child": float64(3),
"list_0": float64(3),
"list_1": float64(4),
"another_list_0": float64(4),
"integer": float64(4),
}
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const invalidJSON = "I don't think this is JSON"
const empty = ""
type mockHTTPClient struct {
responseBody string
statusCode int
}
// Mock implementation of MakeRequest. Usually returns an http.Response with
// hard-coded responseBody and statusCode. However, if the request uses a
// nonstandard method, it uses status code 405 (method not allowed)
func (c *mockHTTPClient) MakeRequest(req *http.Request) (*http.Response, error) {
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resp := http.Response{}
resp.StatusCode = c.statusCode
// basic error checking on request method
allowedMethods := []string{"GET", "HEAD", "POST", "PUT", "DELETE", "TRACE", "CONNECT"}
methodValid := false
for _, method := range allowedMethods {
if req.Method == method {
methodValid = true
break
}
}
if !methodValid {
resp.StatusCode = 405 // Method not allowed
}
resp.Body = ioutil.NopCloser(strings.NewReader(c.responseBody))
return &resp, nil
}
func (c *mockHTTPClient) SetHTTPClient(_ *http.Client) {
}
func (c *mockHTTPClient) HTTPClient() *http.Client {
return nil
}
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// Generates a pointer to an HttpJson object that uses a mock HTTP client.
// Parameters:
// response : Body of the response that the mock HTTP client should return
// statusCode: HTTP status code the mock HTTP client should return
//
// Returns:
// *HttpJson: Pointer to an HttpJson object that uses the generated mock HTTP client
func genMockHttpJson(response string, statusCode int) []*HttpJson {
return []*HttpJson{
&HttpJson{
client: &mockHTTPClient{responseBody: response, statusCode: statusCode},
Servers: []string{
"http://server1.example.com/metrics/",
"http://server2.example.com/metrics/",
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},
Name: "my_webapp",
Method: "GET",
Parameters: map[string]string{
"httpParam1": "12",
"httpParam2": "the second parameter",
},
Headers: map[string]string{
"X-Auth-Token": "the-first-parameter",
"apiVersion": "v1",
},
},
&HttpJson{
client: &mockHTTPClient{responseBody: response, statusCode: statusCode},
Servers: []string{
"http://server3.example.com/metrics/",
"http://server4.example.com/metrics/",
},
Name: "other_webapp",
Method: "POST",
Parameters: map[string]string{
"httpParam1": "12",
"httpParam2": "the second parameter",
},
Headers: map[string]string{
"X-Auth-Token": "the-first-parameter",
"apiVersion": "v1",
},
TagKeys: []string{
"role",
"build",
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},
},
}
}
// Test that the proper values are ignored or collected
func TestHttpJson200(t *testing.T) {
httpjson := genMockHttpJson(validJSON, 200)
for _, service := range httpjson {
var acc testutil.Accumulator
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err := acc.GatherError(service.Gather)
require.NoError(t, err)
assert.Equal(t, 12, acc.NFields())
// Set responsetime
for _, p := range acc.Metrics {
p.Fields["response_time"] = 1.0
}
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for _, srv := range service.Servers {
tags := map[string]string{"server": srv}
mname := "httpjson_" + service.Name
expectedFields["response_time"] = 1.0
acc.AssertContainsTaggedFields(t, mname, expectedFields, tags)
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}
}
}
// Test that GET Parameters from the url string are applied properly
func TestHttpJsonGET_URL(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
key := r.FormValue("api_key")
assert.Equal(t, "mykey", key)
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, validJSON2)
}))
defer ts.Close()
a := HttpJson{
Servers: []string{ts.URL + "?api_key=mykey"},
Name: "",
Method: "GET",
client: &RealHTTPClient{client: &http.Client{}},
}
var acc testutil.Accumulator
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err := acc.GatherError(a.Gather)
require.NoError(t, err)
// remove response_time from gathered fields because it's non-deterministic
delete(acc.Metrics[0].Fields, "response_time")
fields := map[string]interface{}{
"market_btc_usd": float64(422.852),
"market_ltc_btc": float64(0.00798),
"market_ltc_cny": float64(21.3883),
"market_ltc_eur": float64(3.113),
"market_ltc_gbp": float64(2.32807),
"market_ltc_rub": float64(241.796),
"market_ltc_usd": float64(3.37801),
"network_block_number": float64(944895),
"network_difficulty": float64(51825.72835216),
"network_hash_rate": float64(1.426117703e+09),
"network_next_difficulty": float64(51916.15249019),
"network_retarget_time": float64(95053),
"network_time_per_block": float64(156),
"pool_active_users": float64(843),
"pool_hash_rate": float64(1.141e+08),
"pool_pps_rate": float64(7.655e-09),
"pool_pps_ratio": float64(1.04),
"user_blocks_found": float64(0),
"user_expected_24h_rewards": float64(0),
"user_hash_rate": float64(0),
"user_paid_rewards": float64(0),
"user_past_24h_rewards": float64(0),
"user_total_rewards": float64(0.000595109232),
"user_unpaid_rewards": float64(0.000595109232),
"workers_brminer.1_hash_rate": float64(0),
"workers_brminer.1_hash_rate_24h": float64(0),
"workers_brminer.1_reset_time": float64(1.45540995e+09),
"workers_brminer.1_rewards": float64(4.5506464e-05),
"workers_brminer.1_rewards_24h": float64(0),
"workers_brminer.2_hash_rate": float64(0),
"workers_brminer.2_hash_rate_24h": float64(0),
"workers_brminer.2_reset_time": float64(1.455936726e+09),
"workers_brminer.2_rewards": float64(0),
"workers_brminer.2_rewards_24h": float64(0),
"workers_brminer.3_hash_rate": float64(0),
"workers_brminer.3_hash_rate_24h": float64(0),
"workers_brminer.3_reset_time": float64(1.455936733e+09),
"workers_brminer.3_rewards": float64(0),
"workers_brminer.3_rewards_24h": float64(0),
}
acc.AssertContainsFields(t, "httpjson", fields)
}
// Test that GET Parameters are applied properly
func TestHttpJsonGET(t *testing.T) {
params := map[string]string{
"api_key": "mykey",
}
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
key := r.FormValue("api_key")
assert.Equal(t, "mykey", key)
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, validJSON2)
}))
defer ts.Close()
a := HttpJson{
Servers: []string{ts.URL},
Name: "",
Method: "GET",
Parameters: params,
client: &RealHTTPClient{client: &http.Client{}},
}
var acc testutil.Accumulator
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err := acc.GatherError(a.Gather)
require.NoError(t, err)
// remove response_time from gathered fields because it's non-deterministic
delete(acc.Metrics[0].Fields, "response_time")
fields := map[string]interface{}{
"market_btc_usd": float64(422.852),
"market_ltc_btc": float64(0.00798),
"market_ltc_cny": float64(21.3883),
"market_ltc_eur": float64(3.113),
"market_ltc_gbp": float64(2.32807),
"market_ltc_rub": float64(241.796),
"market_ltc_usd": float64(3.37801),
"network_block_number": float64(944895),
"network_difficulty": float64(51825.72835216),
"network_hash_rate": float64(1.426117703e+09),
"network_next_difficulty": float64(51916.15249019),
"network_retarget_time": float64(95053),
"network_time_per_block": float64(156),
"pool_active_users": float64(843),
"pool_hash_rate": float64(1.141e+08),
"pool_pps_rate": float64(7.655e-09),
"pool_pps_ratio": float64(1.04),
"user_blocks_found": float64(0),
"user_expected_24h_rewards": float64(0),
"user_hash_rate": float64(0),
"user_paid_rewards": float64(0),
"user_past_24h_rewards": float64(0),
"user_total_rewards": float64(0.000595109232),
"user_unpaid_rewards": float64(0.000595109232),
"workers_brminer.1_hash_rate": float64(0),
"workers_brminer.1_hash_rate_24h": float64(0),
"workers_brminer.1_reset_time": float64(1.45540995e+09),
"workers_brminer.1_rewards": float64(4.5506464e-05),
"workers_brminer.1_rewards_24h": float64(0),
"workers_brminer.2_hash_rate": float64(0),
"workers_brminer.2_hash_rate_24h": float64(0),
"workers_brminer.2_reset_time": float64(1.455936726e+09),
"workers_brminer.2_rewards": float64(0),
"workers_brminer.2_rewards_24h": float64(0),
"workers_brminer.3_hash_rate": float64(0),
"workers_brminer.3_hash_rate_24h": float64(0),
"workers_brminer.3_reset_time": float64(1.455936733e+09),
"workers_brminer.3_rewards": float64(0),
"workers_brminer.3_rewards_24h": float64(0),
}
acc.AssertContainsFields(t, "httpjson", fields)
}
// Test that POST Parameters are applied properly
func TestHttpJsonPOST(t *testing.T) {
params := map[string]string{
"api_key": "mykey",
}
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
body, err := ioutil.ReadAll(r.Body)
assert.NoError(t, err)
assert.Equal(t, "api_key=mykey", string(body))
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, validJSON2)
}))
defer ts.Close()
a := HttpJson{
Servers: []string{ts.URL},
Name: "",
Method: "POST",
Parameters: params,
client: &RealHTTPClient{client: &http.Client{}},
}
var acc testutil.Accumulator
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err := acc.GatherError(a.Gather)
require.NoError(t, err)
// remove response_time from gathered fields because it's non-deterministic
delete(acc.Metrics[0].Fields, "response_time")
fields := map[string]interface{}{
"market_btc_usd": float64(422.852),
"market_ltc_btc": float64(0.00798),
"market_ltc_cny": float64(21.3883),
"market_ltc_eur": float64(3.113),
"market_ltc_gbp": float64(2.32807),
"market_ltc_rub": float64(241.796),
"market_ltc_usd": float64(3.37801),
"network_block_number": float64(944895),
"network_difficulty": float64(51825.72835216),
"network_hash_rate": float64(1.426117703e+09),
"network_next_difficulty": float64(51916.15249019),
"network_retarget_time": float64(95053),
"network_time_per_block": float64(156),
"pool_active_users": float64(843),
"pool_hash_rate": float64(1.141e+08),
"pool_pps_rate": float64(7.655e-09),
"pool_pps_ratio": float64(1.04),
"user_blocks_found": float64(0),
"user_expected_24h_rewards": float64(0),
"user_hash_rate": float64(0),
"user_paid_rewards": float64(0),
"user_past_24h_rewards": float64(0),
"user_total_rewards": float64(0.000595109232),
"user_unpaid_rewards": float64(0.000595109232),
"workers_brminer.1_hash_rate": float64(0),
"workers_brminer.1_hash_rate_24h": float64(0),
"workers_brminer.1_reset_time": float64(1.45540995e+09),
"workers_brminer.1_rewards": float64(4.5506464e-05),
"workers_brminer.1_rewards_24h": float64(0),
"workers_brminer.2_hash_rate": float64(0),
"workers_brminer.2_hash_rate_24h": float64(0),
"workers_brminer.2_reset_time": float64(1.455936726e+09),
"workers_brminer.2_rewards": float64(0),
"workers_brminer.2_rewards_24h": float64(0),
"workers_brminer.3_hash_rate": float64(0),
"workers_brminer.3_hash_rate_24h": float64(0),
"workers_brminer.3_reset_time": float64(1.455936733e+09),
"workers_brminer.3_rewards": float64(0),
"workers_brminer.3_rewards_24h": float64(0),
}
acc.AssertContainsFields(t, "httpjson", fields)
}
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// Test response to HTTP 500
func TestHttpJson500(t *testing.T) {
httpjson := genMockHttpJson(validJSON, 500)
var acc testutil.Accumulator
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err := acc.GatherError(httpjson[0].Gather)
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assert.Error(t, err)
assert.Equal(t, 0, acc.NFields())
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}
// Test response to HTTP 405
func TestHttpJsonBadMethod(t *testing.T) {
httpjson := genMockHttpJson(validJSON, 200)
httpjson[0].Method = "NOT_A_REAL_METHOD"
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var acc testutil.Accumulator
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err := acc.GatherError(httpjson[0].Gather)
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assert.Error(t, err)
assert.Equal(t, 0, acc.NFields())
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}
// Test response to malformed JSON
func TestHttpJsonBadJson(t *testing.T) {
httpjson := genMockHttpJson(invalidJSON, 200)
var acc testutil.Accumulator
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err := acc.GatherError(httpjson[0].Gather)
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assert.Error(t, err)
assert.Equal(t, 0, acc.NFields())
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}
// Test response to empty string as response object
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func TestHttpJsonEmptyResponse(t *testing.T) {
httpjson := genMockHttpJson(empty, 200)
var acc testutil.Accumulator
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err := acc.GatherError(httpjson[0].Gather)
assert.NoError(t, err)
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}
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// Test that the proper values are ignored or collected
func TestHttpJson200Tags(t *testing.T) {
httpjson := genMockHttpJson(validJSONTags, 200)
for _, service := range httpjson {
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if service.Name == "other_webapp" {
var acc testutil.Accumulator
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err := acc.GatherError(service.Gather)
// Set responsetime
for _, p := range acc.Metrics {
p.Fields["response_time"] = 1.0
}
require.NoError(t, err)
assert.Equal(t, 4, acc.NFields())
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for _, srv := range service.Servers {
tags := map[string]string{"server": srv, "role": "master", "build": "123"}
fields := map[string]interface{}{"value": float64(15), "response_time": float64(1)}
mname := "httpjson_" + service.Name
acc.AssertContainsTaggedFields(t, mname, fields, tags)
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}
}
}
}
const validJSONArrayTags = `
[
{
"value": 15,
"role": "master",
"build": "123"
},
{
"value": 17,
"role": "slave",
"build": "456"
}
]`
// Test that array data is collected correctly
func TestHttpJsonArray200Tags(t *testing.T) {
httpjson := genMockHttpJson(validJSONArrayTags, 200)
for _, service := range httpjson {
if service.Name == "other_webapp" {
var acc testutil.Accumulator
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err := acc.GatherError(service.Gather)
// Set responsetime
for _, p := range acc.Metrics {
p.Fields["response_time"] = 1.0
}
require.NoError(t, err)
assert.Equal(t, 8, acc.NFields())
assert.Equal(t, uint64(4), acc.NMetrics())
for _, m := range acc.Metrics {
if m.Tags["role"] == "master" {
assert.Equal(t, "123", m.Tags["build"])
assert.Equal(t, float64(15), m.Fields["value"])
assert.Equal(t, float64(1), m.Fields["response_time"])
assert.Equal(t, "httpjson_"+service.Name, m.Measurement)
} else if m.Tags["role"] == "slave" {
assert.Equal(t, "456", m.Tags["build"])
assert.Equal(t, float64(17), m.Fields["value"])
assert.Equal(t, float64(1), m.Fields["response_time"])
assert.Equal(t, "httpjson_"+service.Name, m.Measurement)
} else {
assert.FailNow(t, "unknown metric")
}
}
}
}
}
var jsonBOM = []byte("\xef\xbb\xbf[{\"value\":17}]")
// TestHttpJsonBOM tests that UTF-8 JSON with a BOM can be parsed
func TestHttpJsonBOM(t *testing.T) {
httpjson := genMockHttpJson(string(jsonBOM), 200)
for _, service := range httpjson {
if service.Name == "other_webapp" {
var acc testutil.Accumulator
err := acc.GatherError(service.Gather)
require.NoError(t, err)
}
}
}