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(ws) redis_subscribe and redis_publish can take a password + display subscribe response

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This commit is contained in:
Benjamin Sergeant
2019-03-26 09:33:22 -07:00
parent 1554c587b3
commit 3388bb50e1
6 changed files with 85 additions and 3 deletions
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41
ws/IXRedisClient.cpp
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@@ -30,6 +30,39 @@ namespace ix
return _socket->connect(hostname, port, errMsg, nullptr);
}
bool RedisClient::auth(const std::string& password,
std::string& response)
{
response.clear();
if (!_socket) return false;
std::stringstream ss;
ss << "AUTH ";
ss << password;
ss << "\r\n";
bool sent = _socket->writeBytes(ss.str(), nullptr);
if (!sent)
{
return false;
}
auto pollResult = _socket->isReadyToRead(-1);
if (pollResult == PollResultType::Error)
{
return false;
}
auto lineResult = _socket->readLine(nullptr);
auto lineValid = lineResult.first;
auto line = lineResult.second;
response = line;
return lineValid;
}
bool RedisClient::publish(const std::string& channel,
const std::string& message)
{
@@ -65,6 +98,7 @@ namespace ix
// FIXME: we assume that redis never return errors...
//
bool RedisClient::subscribe(const std::string& channel,
const OnRedisSubscribeResponseCallback& responseCallback,
const OnRedisSubscribeCallback& callback)
{
if (!_socket) return false;
@@ -87,10 +121,14 @@ namespace ix
return false;
}
// build the response as a single string
std::stringstream oss;
// Read the first line of the response
auto lineResult = _socket->readLine(nullptr);
auto lineValid = lineResult.first;
auto line = lineResult.second;
oss << line;
if (!lineValid) return false;
@@ -100,10 +138,13 @@ namespace ix
auto lineResult = _socket->readLine(nullptr);
auto lineValid = lineResult.first;
auto line = lineResult.second;
oss << line;
if (!lineValid) return false;
}
responseCallback(oss.str());
// Wait indefinitely for new messages
while (true)
{

5
ws/IXRedisClient.h
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@@ -15,6 +15,7 @@ namespace ix
class RedisClient {
public:
using OnRedisSubscribeResponseCallback = std::function<void(const std::string&)>;
using OnRedisSubscribeCallback = std::function<void(const std::string&)>;
RedisClient() = default;
@@ -23,10 +24,14 @@ namespace ix
bool connect(const std::string& hostname,
int port);
bool auth(const std::string& password,
std::string& response);
bool publish(const std::string& channel,
const std::string& message);
bool subscribe(const std::string& channel,
const OnRedisSubscribeResponseCallback& responseCallback,
const OnRedisSubscribeCallback& callback);
private:

7
ws/ws.cpp
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@@ -37,6 +37,7 @@ int main(int argc, char** argv)
std::string pidfile;
std::string channel;
std::string message;
std::string password;
bool headersOnly = false;
bool followRedirects = false;
bool verbose = false;
@@ -102,12 +103,14 @@ int main(int argc, char** argv)
CLI::App* redisPublishApp = app.add_subcommand("redis_publish", "Redis publisher");
redisPublishApp->add_option("--port", redisPort, "Port");
redisPublishApp->add_option("--host", hostname, "Hostname");
redisPublishApp->add_option("--password", password, "Password");
redisPublishApp->add_option("channel", channel, "Channel")->required();
redisPublishApp->add_option("message", message, "Message")->required();
CLI::App* redisSubscribeApp = app.add_subcommand("redis_subscribe", "Redis subscriber");
redisSubscribeApp->add_option("--port", redisPort, "Port");
redisSubscribeApp->add_option("--host", hostname, "Hostname");
redisSubscribeApp->add_option("--password", password, "Password");
redisSubscribeApp->add_option("channel", channel, "Channel")->required();
redisSubscribeApp->add_flag("-v", verbose, "Verbose");
@@ -166,11 +169,11 @@ int main(int argc, char** argv)
}
else if (app.got_subcommand("redis_publish"))
{
return ix::ws_redis_publish_main(hostname, redisPort, channel, message);
return ix::ws_redis_publish_main(hostname, redisPort, password, channel, message);
}
else if (app.got_subcommand("redis_subscribe"))
{
return ix::ws_redis_subscribe_main(hostname, redisPort, channel, verbose);
return ix::ws_redis_subscribe_main(hostname, redisPort, password, channel, verbose);
}
return 1;

2
ws/ws.h
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@@ -42,11 +42,13 @@ namespace ix
int ws_redis_publish_main(const std::string& hostname,
int port,
const std::string& password,
const std::string& channel,
const std::string& message);
int ws_redis_subscribe_main(const std::string& hostname,
int port,
const std::string& password,
const std::string& channel,
bool verbose);
}

13
ws/ws_redis_publish.cpp
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@@ -12,6 +12,7 @@ namespace ix
{
int ws_redis_publish_main(const std::string& hostname,
int port,
const std::string& password,
const std::string& channel,
const std::string& message)
{
@@ -22,6 +23,18 @@ namespace ix
return 1;
}
if (!password.empty())
{
std::string authResponse;
if (!redisClient.auth(password, authResponse))
{
std::stringstream ss;
std::cerr << "Cannot authenticated to redis" << std::endl;
return 1;
}
std::cout << "Auth response: " << authResponse << ":" << port << std::endl;
}
std::cerr << "Publishing message " << message
<< " to " << channel << "..." << std::endl;
if (!redisClient.publish(channel, message))

20
ws/ws_redis_subscribe.cpp
View File

@@ -13,6 +13,7 @@ namespace ix
{
int ws_redis_subscribe_main(const std::string& hostname,
int port,
const std::string& password,
const std::string& channel,
bool verbose)
{
@@ -23,6 +24,18 @@ namespace ix
return 1;
}
if (!password.empty())
{
std::string authResponse;
if (!redisClient.auth(password, authResponse))
{
std::stringstream ss;
std::cerr << "Cannot authenticated to redis" << std::endl;
return 1;
}
std::cout << "Auth response: " << authResponse << ":" << port << std::endl;
}
std::chrono::time_point<std::chrono::steady_clock> lastTimePoint;
int msgPerSeconds = 0;
int msgCount = 0;
@@ -53,8 +66,13 @@ namespace ix
}
};
auto responseCallback = [](const std::string& redisResponse)
{
std::cout << "Redis subscribe response: " << redisResponse << std::endl;
};
std::cerr << "Subscribing to " << channel << "..." << std::endl;
if (!redisClient.subscribe(channel, callback))
if (!redisClient.subscribe(channel, responseCallback, callback))
{
std::cerr << "Error subscribing to channel " << channel << std::endl;
return 1;