arpadboda commented on a change in pull request #734: MINIFICPP-1157 Implement
lightweight C2 heartbeat.
URL: https://github.com/apache/nifi-minifi-cpp/pull/734#discussion_r385206542
##########
File path: extensions/http-curl/tests/HTTPHandlers.h
##########
@@ -343,4 +345,104 @@ class DeleteTransactionResponder : public CivetHandler {
std::string response_code;
};
+class HeartbeatHandler : public CivetHandler {
+ public:
+ explicit HeartbeatHandler(bool isSecure)
+ : isSecure(isSecure) {
+ }
+
+ virtual ~HeartbeatHandler() = default;
+
+ std::string readPost(struct mg_connection *conn) {
+ std::string response;
+ int blockSize = 1024 * sizeof(char), readBytes;
+
+ char buffer[1024];
+ while ((readBytes = mg_read(conn, buffer, blockSize)) > 0) {
+ response.append(buffer, 0, (readBytes / sizeof(char)));
+ }
+ return response;
+ }
+
+ void sendStopOperation(struct mg_connection *conn) {
+ std::string resp = "{\"operation\" : \"heartbeat\",
\"requested_operations\" : [{ \"operationid\" : 41, \"operation\" : \"stop\",
\"name\" : \"invoke\" }, "
+ "{ \"operationid\" : 42, \"operation\" : \"stop\", \"name\" :
\"FlowController\" } ]}";
+ mg_printf(conn, "HTTP/1.1 200 OK\r\nContent-Type: "
+ "text/plain\r\nContent-Length: %lu\r\nConnection: close\r\n\r\n",
+ resp.length());
+ mg_printf(conn, "%s", resp.c_str());
+ }
+
+ void sendHeartbeatResponse(const std::string& operation, const std::string&
operand, const std::string& operationId, struct mg_connection * conn) {
+ std::string heartbeat_response = "{\"operation\" :
\"heartbeat\",\"requested_operations\": [ {"
+ "\"operation\" : \"" + operation + "\","
+ "\"operationid\" : \"" + operationId + "\","
+ "\"operand\": \"" + operand + "\"}]}";
+
+ mg_printf(conn, "HTTP/1.1 200 OK\r\nContent-Type: "
+ "text/plain\r\nContent-Length: %lu\r\nConnection:
close\r\n\r\n",
+ heartbeat_response.length());
+ mg_printf(conn, "%s", heartbeat_response.c_str());
+ }
+
+ void verifyJsonHasAgentManifest(const rapidjson::Document& root) {
+ bool found = false;
+ assert(root.HasMember("agentInfo") == true);
+ assert(root["agentInfo"].HasMember("agentManifest") == true);
+ assert(root["agentInfo"]["agentManifest"].HasMember("bundles") == true);
+
+ for (auto &bundle :
root["agentInfo"]["agentManifest"]["bundles"].GetArray()) {
+ assert(bundle.HasMember("artifact"));
+ std::string str = bundle["artifact"].GetString();
+ if (str == "minifi-system") {
+
+ std::vector<std::string> classes;
+ for (auto &proc :
bundle["componentManifest"]["processors"].GetArray()) {
+ classes.push_back(proc["type"].GetString());
+ }
+
+ auto group = minifi::BuildDescription::getClassDescriptions(str);
+ for (auto proc : group.processors_) {
+ assert(std::find(classes.begin(), classes.end(), proc.class_name_)
!= std::end(classes));
+ found = true;
+ }
+
+ }
+ }
+ assert(found == true);
+ }
+
+ virtual void handleHeartbeat(const rapidjson::Document& root, struct
mg_connection * conn) {
+ (void)conn;
+ verifyJsonHasAgentManifest(root);
+ }
+
+ virtual void handleAcknowledge(const rapidjson::Document& root) {
+ }
+
+ void verify(struct mg_connection *conn) {
+ auto post_data = readPost(conn);
+ std::cerr << post_data << std::endl;
+ if (!IsNullOrEmpty(post_data)) {
+ rapidjson::Document root;
+ rapidjson::ParseResult ok = root.Parse(post_data.data(),
post_data.size());
+ std::string operation = root["operation"].GetString();
+ if (operation == "heartbeat") {
+ handleHeartbeat(root, conn);
+ } else if (operation == "acknowledge") {
+ handleAcknowledge(root);
+ }
Review comment:
I think think an else branch to throw an exception (to make sure we fail the
test in case something unexpected is received) would make sense here.
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