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tests: runtime: in_otel: add test code (#7489)
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Signed-off-by: Takahiro Yamashita <nokute78@gmail.com>
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@nokute78
nokute78 authored Jul 3, 2023
1 parent c024767 commit b8d898d
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1 change: 1 addition & 0 deletions tests/runtime/CMakeLists.txt
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Expand Up @@ -45,6 +45,7 @@ if(FLB_OUT_LIB)
FLB_RT_TEST(FLB_IN_DUMMY "in_dummy.c")
FLB_RT_TEST(FLB_IN_HTTP "in_http.c")
FLB_RT_TEST(FLB_IN_ELASTICSEARCH "in_elasticsearch.c")
FLB_RT_TEST(FLB_IN_OPENTELEMETRY "in_opentelemetry.c")
FLB_RT_TEST(FLB_IN_RANDOM "in_random.c")
FLB_RT_TEST(FLB_IN_STATSD "in_statsd.c")
FLB_RT_TEST(FLB_IN_SYSLOG "in_syslog.c")
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376 changes: 376 additions & 0 deletions tests/runtime/in_opentelemetry.c
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/* Fluent Bit
* ==========
* Copyright (C) 2019-2022 The Fluent Bit Authors
* Copyright (C) 2015-2018 Treasure Data 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.
*/

#include <stdlib.h>
#include <fluent-bit.h>
#include <fluent-bit/flb_compat.h>
#include <fluent-bit/flb_time.h>
#include <fluent-bit/flb_pack.h>
#include <fluent-bit/flb_http_client.h>
#include <monkey/mk_core.h>
#include "flb_tests_runtime.h"

#define JSON_CONTENT_TYPE "application/json"

#define PORT_OTEL 4318
#define TEST_MSG_OTEL_LOGS "{\"resourceLogs\":[{\"resource\":{},\"scopeLogs\":[{\"scope\":{},\"logRecords\":[{\"timeUnixNano\":\"1660296023390371588\",\"body\":{\"stringValue\":\"{\\\"message\\\":\\\"test\\\"}\"}}]}]}]}"
#define TEST_CB_MSG_OTEL_LOGS "[1660296024.698112,{\"log\":\"{\\\"message\\\":\\\"test\\\"}\"}]"

#define V1_ENDPOINT_LOGS "/v1/logs"

struct http_client_ctx {
struct flb_upstream *u;
struct flb_connection *u_conn;
struct flb_config *config;
struct mk_event_loop *evl;
};

struct test_ctx {
flb_ctx_t *flb; /* Fluent Bit library context */
int i_ffd; /* Input fd */
int f_ffd; /* Filter fd (unused) */
int o_ffd; /* Output fd */
struct http_client_ctx *httpc;
};


pthread_mutex_t result_mutex = PTHREAD_MUTEX_INITIALIZER;
int num_output = 0;
static int get_output_num()
{
int ret;
pthread_mutex_lock(&result_mutex);
ret = num_output;
pthread_mutex_unlock(&result_mutex);

return ret;
}

static void set_output_num(int num)
{
pthread_mutex_lock(&result_mutex);
num_output = num;
pthread_mutex_unlock(&result_mutex);
}

static void clear_output_num()
{
set_output_num(0);
}

/* Callback to check expected results */
static int cb_check_result_json(void *record, size_t size, void *data)
{
char *p;
char *expected;
char *result;
int num = get_output_num();

set_output_num(num+1);

expected = (char *) data;
result = (char *) record;

p = strstr(result, expected);
TEST_CHECK(p != NULL);

if (p==NULL) {
flb_error("Expected to find: '%s' in result '%s'",
expected, result);
}
/*
* If you want to debug your test
*
* printf("Expect: '%s' in result '%s'", expected, result);
*/
flb_free(record);
return 0;
}

struct http_client_ctx* http_client_ctx_create()
{
struct http_client_ctx *ret_ctx = NULL;
struct mk_event_loop *evl = NULL;

ret_ctx = flb_calloc(1, sizeof(struct http_client_ctx));
if (!TEST_CHECK(ret_ctx != NULL)) {
flb_errno();
TEST_MSG("flb_calloc(http_client_ctx) failed");
return NULL;
}

evl = mk_event_loop_create(16);
if (!TEST_CHECK(evl != NULL)) {
TEST_MSG("mk_event_loop failed");
flb_free(ret_ctx);
return NULL;
}
ret_ctx->evl = evl;
flb_engine_evl_init();
flb_engine_evl_set(evl);

ret_ctx->config = flb_config_init();
if(!TEST_CHECK(ret_ctx->config != NULL)) {
TEST_MSG("flb_config_init failed");
mk_event_loop_destroy(evl);
flb_free(ret_ctx);
return NULL;
}

ret_ctx->u = flb_upstream_create(ret_ctx->config, "127.0.0.1", PORT_OTEL, 0, NULL);
if (!TEST_CHECK(ret_ctx->u != NULL)) {
TEST_MSG("flb_upstream_create failed");
flb_config_exit(ret_ctx->config);
mk_event_loop_destroy(evl);
flb_free(ret_ctx);
return NULL;
}

ret_ctx->u_conn = flb_upstream_conn_get(ret_ctx->u);
TEST_CHECK(ret_ctx->u_conn != NULL);

ret_ctx->u_conn->upstream = ret_ctx->u;

return ret_ctx;
}

static struct test_ctx *test_ctx_create(struct flb_lib_out_cb *data)
{
int i_ffd;
int o_ffd;
struct test_ctx *ctx = NULL;

ctx = flb_calloc(1, sizeof(struct test_ctx));
if (!TEST_CHECK(ctx != NULL)) {
TEST_MSG("flb_calloc failed");
flb_errno();
return NULL;
}

/* Service config */
ctx->flb = flb_create();
flb_service_set(ctx->flb,
"Flush", "0.200000000",
"Grace", "1",
"Log_Level", "error",
NULL);

/* Input */
i_ffd = flb_input(ctx->flb, (char *) "opentelemetry", NULL);
TEST_CHECK(i_ffd >= 0);
ctx->i_ffd = i_ffd;

/* Output */
o_ffd = flb_output(ctx->flb, (char *) "lib", (void *) data);
ctx->o_ffd = o_ffd;

return ctx;
}

int http_client_ctx_destroy(struct http_client_ctx* ctx)
{
if (!TEST_CHECK(ctx != NULL)) {
return -1;
}
if (ctx->u) {
flb_upstream_destroy(ctx->u);
}
if (ctx->config) {
flb_config_exit(ctx->config);
}
if (ctx->evl) {
mk_event_loop_destroy(ctx->evl);
}

flb_free(ctx);
return 0;
}

static void test_ctx_destroy(struct test_ctx *ctx)
{
TEST_CHECK(ctx != NULL);
if (ctx->httpc) {
http_client_ctx_destroy(ctx->httpc);
}

sleep(1);
flb_stop(ctx->flb);
flb_destroy(ctx->flb);
flb_free(ctx);
}

void flb_test_otel_logs()
{
struct flb_lib_out_cb cb_data;
struct test_ctx *ctx;
struct flb_http_client *c;
int ret;
int num;
size_t b_sent;

char *buf = TEST_MSG_OTEL_LOGS;

clear_output_num();

cb_data.cb = cb_check_result_json;
cb_data.data = TEST_CB_MSG_OTEL_LOGS;

ctx = test_ctx_create(&cb_data);
if (!TEST_CHECK(ctx != NULL)) {
TEST_MSG("test_ctx_create failed");
exit(EXIT_FAILURE);
}

ret = flb_output_set(ctx->flb, ctx->o_ffd,
"match", "*",
"format", "json",
NULL);
TEST_CHECK(ret == 0);

/* Start the engine */
ret = flb_start(ctx->flb);
TEST_CHECK(ret == 0);

ctx->httpc = http_client_ctx_create();
TEST_CHECK(ctx->httpc != NULL);

c = flb_http_client(ctx->httpc->u_conn, FLB_HTTP_POST, V1_ENDPOINT_LOGS, buf, strlen(buf),
"127.0.0.1", PORT_OTEL, NULL, 0);
ret = flb_http_add_header(c, FLB_HTTP_HEADER_CONTENT_TYPE, strlen(FLB_HTTP_HEADER_CONTENT_TYPE),
JSON_CONTENT_TYPE, strlen(JSON_CONTENT_TYPE));
TEST_CHECK(ret == 0);
if (!TEST_CHECK(c != NULL)) {
TEST_MSG("http_client failed");
exit(EXIT_FAILURE);
}

ret = flb_http_do(c, &b_sent);
if (!TEST_CHECK(ret == 0)) {
TEST_MSG("ret error. ret=%d\n", ret);
}
else if (!TEST_CHECK(b_sent > 0)){
TEST_MSG("b_sent size error. b_sent = %lu\n", b_sent);
}
else if (!TEST_CHECK(c->resp.status == 201)) {
TEST_MSG("http response code error. expect: 201, got: %d\n", c->resp.status);
}

/* waiting to flush */
flb_time_msleep(1500);

num = get_output_num();
if (!TEST_CHECK(num > 0)) {
TEST_MSG("no outputs");
}
flb_http_client_destroy(c);
flb_upstream_conn_release(ctx->httpc->u_conn);
test_ctx_destroy(ctx);
}

void flb_test_otel_successful_response_code(char *response_code)
{
struct flb_lib_out_cb cb_data;
struct test_ctx *ctx;
struct flb_http_client *c;
int ret;
int num;
size_t b_sent;

char *buf = TEST_MSG_OTEL_LOGS;

clear_output_num();

cb_data.cb = cb_check_result_json;
cb_data.data = TEST_CB_MSG_OTEL_LOGS;

ctx = test_ctx_create(&cb_data);
if (!TEST_CHECK(ctx != NULL)) {
TEST_MSG("test_ctx_create failed");
exit(EXIT_FAILURE);
}

ret = flb_input_set(ctx->flb, ctx->i_ffd,
"successful_response_code", response_code,
NULL);
TEST_CHECK(ret == 0);

ret = flb_output_set(ctx->flb, ctx->o_ffd,
"match", "*",
"format", "json",
NULL);
TEST_CHECK(ret == 0);

/* Start the engine */
ret = flb_start(ctx->flb);
TEST_CHECK(ret == 0);

ctx->httpc = http_client_ctx_create();
TEST_CHECK(ctx->httpc != NULL);

c = flb_http_client(ctx->httpc->u_conn, FLB_HTTP_POST, V1_ENDPOINT_LOGS, buf, strlen(buf),
"127.0.0.1", PORT_OTEL, NULL, 0);
ret = flb_http_add_header(c, FLB_HTTP_HEADER_CONTENT_TYPE, strlen(FLB_HTTP_HEADER_CONTENT_TYPE),
JSON_CONTENT_TYPE, strlen(JSON_CONTENT_TYPE));
TEST_CHECK(ret == 0);
if (!TEST_CHECK(c != NULL)) {
TEST_MSG("http_client failed");
exit(EXIT_FAILURE);
}

ret = flb_http_do(c, &b_sent);
if (!TEST_CHECK(ret == 0)) {
TEST_MSG("ret error. ret=%d\n", ret);
}
else if (!TEST_CHECK(b_sent > 0)){
TEST_MSG("b_sent size error. b_sent = %lu\n", b_sent);
}
else if (!TEST_CHECK(c->resp.status == atoi(response_code))) {
TEST_MSG("http response code error. expect: %d, got: %d\n", atoi(response_code), c->resp.status);
}

/* waiting to flush */
flb_time_msleep(1500);

num = get_output_num();
if (!TEST_CHECK(num > 0)) {
TEST_MSG("no outputs");
}
flb_http_client_destroy(c);
flb_upstream_conn_release(ctx->httpc->u_conn);
test_ctx_destroy(ctx);
}

void flb_test_otel_successful_response_code_200()
{
flb_test_otel_successful_response_code("200");
}

void flb_test_otel_successful_response_code_204()
{
flb_test_otel_successful_response_code("204");
}

TEST_LIST = {
{"otel_logs", flb_test_otel_logs},
{"successful_response_code_200", flb_test_otel_successful_response_code_200},
{"successful_response_code_204", flb_test_otel_successful_response_code_204},
{NULL, NULL}
};

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