Added regression test for #3223 major changes for 'RESTAPI'

+ Added generic test for checking script execution through 'RESTAPI'.
+ Added multiple new scripts fails to be executed through the 'RESTAPI'.

test/tap/tests/reg_test_3223-restapi_return_codes-t.cpp

@@ -0,0 +1,199 @@
+/**
+ * @file reg_test_3223-restapi_return_codes-t.cpp
+ * @brief This test ensures that RESTAPI is able to execute scripts returning the proper error
+ *   codes in case of success or failure.
+ * @date 2021-03-10
+ */
+
+#include <algorithm>
+#include <string>
+#include <stdio.h>
+#include <unistd.h>
+#include <vector>
+#include <tuple>
+
+#include <curl/curl.h>
+
+#include <mysql.h>
+#include <mysql/mysqld_error.h>
+
+#include "tap.h"
+#include "command_line.h"
+#include "utils.h"
+
+using std::string;
+
+
+/**
+ * @brief Dummy write function to avoid CURL to write received output to stdout.
+ * @return Returns the size presented.
+ */
+size_t my_dummy_write(char*, size_t size, size_t nmemb, void*) {
+	return size * nmemb;
+}
+
+/**
+ * @brief Perform a simple POST query to the specified endpoint using the supplied
+ *  'post_params'.
+ *
+ * @param endpoint The endpoint to be exercised by the POST.
+ * @param post_params The post parameters to be supplied to the script.
+ * @param curl_out_err A string reference to collect the error as a string reported
+ *   by 'libcurl' in case of failure.
+ *
+ * @return The response code of the query in case of the query.
+ */
+long perform_simple_post(const string& endpoint, const string& post_params, string& curl_out_err) {
+	CURL *curl;
+	CURLcode res;
+	long response_code;
+
+	curl_global_init(CURL_GLOBAL_ALL);
+
+	curl = curl_easy_init();
+	if(curl) {
+		diag("endpoint: %s", endpoint.c_str());
+
+		curl_easy_setopt(curl, CURLOPT_URL, endpoint.c_str());
+		curl_easy_setopt(curl, CURLOPT_POSTFIELDS, post_params.c_str());
+		curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &my_dummy_write);
+
+		res = curl_easy_perform(curl);
+
+		if(res != CURLE_OK) {
+			curl_out_err = std::string { curl_easy_strerror(res) };
+		} else {
+			curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response_code);
+		}
+
+		curl_easy_cleanup(curl);
+	}
+
+	return response_code;
+}
+
+const std::string base_address { "http://localhost:6070/sync/" };
+
+std::vector<std::tuple<std::string, std::string, long>> valid_endpoints {
+	std::make_tuple( "large_output_script", "{}", 200 ),
+	std::make_tuple( "partial_output_flush_script", "{}", 200 ),
+	std::make_tuple( "valid_output_script", "{}", 200 ),
+	// check scripts remain operational
+	// NOTE: Disable due to requiring python2 annotation in file
+	// std::make_tuple( "metrics", "{\"user\":\"admin\", \"password\":\"admin\", \"host\":\"127.0.0.1\", \"port\":\"6032\"}", 200 )
+};
+
+std::vector<std::tuple<std::string, std::string, long>> invalid_requests {
+	std::make_tuple( "invalid_output_script", "{}", 424 ),
+	std::make_tuple( "timeout_script", "{}", 424 ),
+	std::make_tuple( "invalid_script", "{}", 424 ),
+	std::make_tuple( "non_existing_script", "{}", 400 ),
+	// supplied with invalid params
+	std::make_tuple( "valid_output_script", "", 400 )
+};
+
+int main(int argc, char** argv) {
+	CommandLine cl;
+
+	if (cl.getEnv()) {
+		diag("Failed to get the required environmental variables.");
+		return -1;
+	}
+
+	plan(valid_endpoints.size() + invalid_requests.size());
+
+	MYSQL* proxysql_admin = mysql_init(NULL);
+
+	// Initialize connections
+	if (!proxysql_admin) {
+		fprintf(stderr, "File %s, line %d, Error: %s\n", __FILE__, __LINE__, mysql_error(proxysql_admin));
+		return -1;
+	}
+
+	if (!mysql_real_connect(proxysql_admin, cl.host, cl.admin_username, cl.admin_password, NULL, cl.admin_port, NULL, 0)) {
+		fprintf(stderr, "File %s, line %d, Error: %s\n", __FILE__, __LINE__, mysql_error(proxysql_admin));
+		return -1;
+	}
+
+	// Clean current 'restapi_routes' if any
+	MYSQL_QUERY(proxysql_admin, "DELETE FROM restapi_routes");
+
+	// Configure restapi_routes to be used
+
+	// Congigure routes for valid scripts
+	MYSQL_QUERY(
+		proxysql_admin,
+		"INSERT INTO restapi_routes (active, timeout_ms, method, uri, script, comment) "
+		"VALUES (1,5000,'POST','large_output_script','../test/tap/tests/reg_test_3223_scripts/large_output_script.py','comm')"
+	);
+	MYSQL_QUERY(
+		proxysql_admin,
+		"INSERT INTO restapi_routes (active, timeout_ms, method, uri, script, comment) "
+		"VALUES (1,5000,'POST','partial_output_flush_script','../test/tap/tests/reg_test_3223_scripts/partial_output_flush_script.py','comm')"
+	);
+	MYSQL_QUERY(
+		proxysql_admin,
+		"INSERT INTO restapi_routes (active, timeout_ms, method, uri, script, comment) "
+		"VALUES (1,1000,'POST','valid_output_script','../test/tap/tests/reg_test_3223_scripts/valid_output_script.py','comm')"
+	);
+
+	// NOTE: Disable due to requiring python2 annotation in file
+	// MYSQL_QUERY(
+	// 	proxysql_admin,
+	// 	"INSERT INTO restapi_routes (active, timeout_ms, method, uri, script, comment) "
+	// 	"VALUES (1,1000,'POST','metrics','../scripts/metrics.py','comm')"
+	// );
+
+	// Congigure routes for invalid scripts
+	MYSQL_QUERY(
+		proxysql_admin,
+		"INSERT INTO restapi_routes (active, timeout_ms, method, uri, script, comment) "
+		"VALUES (1,1000,'POST','invalid_output_script','../test/tap/tests/reg_test_3223_scripts/invalid_output_script.py','comm')"
+	);
+	MYSQL_QUERY(
+		proxysql_admin,
+		"INSERT INTO restapi_routes (active, timeout_ms, method, uri, script, comment) "
+		"VALUES (1,1000,'POST','timeout_script','../test/tap/tests/reg_test_3223_scripts/timeout_script.py','comm')"
+	);
+	MYSQL_QUERY(
+		proxysql_admin,
+		"INSERT INTO restapi_routes (active, timeout_ms, method, uri, script, comment) "
+		"VALUES (1,1000,'POST','invalid_script','../test/tap/tests/reg_test_3223_scripts/invalid_script.py','comm')"
+	);
+
+	MYSQL_QUERY(proxysql_admin, "LOAD restapi TO RUNTIME");
+
+	for (const auto& valid_request_tuple : valid_endpoints) {
+		const std::string full_endpoint { base_address + std::get<0>(valid_request_tuple) + "/"};
+		std::string post_out_err { "" };
+
+		// perform the POST operation
+		int post_err = perform_simple_post(full_endpoint, std::get<1>(valid_request_tuple), post_out_err);
+
+		ok(
+			post_err == 200,
+			"Performing a POST over endpoint '%s' should result into a 200 response: (errcode: '%d', curlerr: '%s' )",
+			full_endpoint.c_str(),
+			post_err,
+			post_out_err.c_str()
+		);
+	}
+
+	for (const auto& invalid_request_tuple : invalid_requests) {
+		const std::string full_endpoint { base_address + std::get<0>(invalid_request_tuple) + "/" };
+		std::string post_out_err { "" };
+
+		// perform the POST operation
+		int post_err = perform_simple_post(full_endpoint, std::get<1>(invalid_request_tuple), post_out_err);
+
+		ok(
+			post_err == std::get<2>(invalid_request_tuple),
+			"Performing a POST over endpoint '%s' shouldn't result into a 200 response: (errcode: '%d', curlerr: '%s' )",
+			full_endpoint.c_str(),
+			post_err,
+			post_out_err.c_str()
+		);
+	}
+
+	return exit_status();
+}

test/tap/tests/reg_test_3223_scripts/invalid_output_script.py

@@ -0,0 +1,6 @@
+#!/usr/bin/env python
+
+"""Simple script that should fail to execute to check RESTAPI result code."""
+
+if __name__ == "__main__":
+    print("{invalid_json}")

test/tap/tests/reg_test_3223_scripts/invalid_script.py

@@ -0,0 +1,6 @@
+#!/usr/bin/env python
+
+"""Simple script that should fail to execute to check RESTAPI result code."""
+
+if __name__ == "__main__":
+    print(non_valid_variable)

test/tap/tests/reg_test_3223_scripts/large_output_script.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+
+"""Simple script to produce a 1MB output to be processed by the RESTAPI."""
+
+import json
+
+random_dic = {}
+
+##
+# @brief Return the length of the encoded string, output gives an stimation
+#  of string size in bytes.
+# @param s The string which size is to be measured.
+# @return The length of the result of encoding the supplied string in 'utf-8'
+def utf8len(s):
+    return len(s.encode('utf-8'))
+
+if __name__ == "__main__":
+    # Return big random JSON
+    for i in range(0, 40000):
+        random_dic["id_" + str(i)] = "0000000000"
+
+    j_random_dic = json.dumps(random_dic)
+
+    # print(utf8len(j_random_dic))
+    print(j_random_dic)

test/tap/tests/reg_test_3223_scripts/partial_output_flush_script.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+
+"""Simple script to produce a 1MB output flushed in two times to be processed by the RESTAPI."""
+
+import json
+import time
+
+random_dic = {}
+
+if __name__ == "__main__":
+    # Generate 1MB empty JSON
+    for i in range(0, 40000):
+        random_dic["id_" + str(i)] = "0000000000"
+
+    j_random_dic = json.dumps(random_dic)
+
+    # Split the string in half
+    firstpart, secondpart = j_random_dic[:len(j_random_dic)//2], j_random_dic[len(j_random_dic)//2:]
+
+    # Partial flush script
+    print(firstpart, end='', flush=True)
+    time.sleep(1)
+    print(secondpart, end='', flush=True)

test/tap/tests/reg_test_3223_scripts/timeout_script.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+
+"""Simple script to force a timeout failure in RESTAPI."""
+
+import time
+import json
+
+random_dic = {}
+
+if __name__ == "__main__":
+    # Forcing the timeout
+    time.sleep(10)
+
+    # Return random JSON
+    for i in range(0, 20):
+        random_dic["id_" + str(i)] = "0000000000"
+
+    j_random_dic = json.dumps(random_dic)
+
+    print(j_random_dic)

test/tap/tests/reg_test_3223_scripts/valid_output_script.py

@@ -0,0 +1,9 @@
+#!/usr/bin/env python
+
+"""Simple script returning a valid empty result for RESTAPI."""
+
+random_dic = {}
+
+if __name__ == "__main__":
+    # Return minimal JSON
+    print('{}')