(ws + cobra bots) add a cobra_to_cobra ws subcommand to subscribe to a channel and republish received events to a different channel

ixbots/ixbots/IXCobraToCobraBot.cpp

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+/*
+ *  IXCobraToCobraBot.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2020 Machine Zone, Inc. All rights reserved.
+ */
+
+#include "IXCobraToCobraBot.h"
+
+#include "IXCobraBot.h"
+#include <ixcobra/IXCobraMetricsPublisher.h>
+#include <sstream>
+
+namespace ix
+{
+    int64_t cobra_to_cobra_bot(const ix::CobraBotConfig& cobraBotConfig,
+                               const std::string& republishChannel,
+                               const std::string& publisherRolename,
+                               const std::string& publisherRolesecret)
+    {
+        CobraBot bot;
+
+        CobraMetricsPublisher cobraMetricsPublisher;
+        CobraConfig cobraPublisherConfig = cobraBotConfig.cobraConfig;
+        cobraPublisherConfig.rolename = publisherRolename;
+        cobraPublisherConfig.rolesecret = publisherRolesecret;
+        cobraMetricsPublisher.configure(cobraPublisherConfig, republishChannel);
+
+        bot.setOnBotMessageCallback(
+            [&republishChannel, &cobraMetricsPublisher](const Json::Value& msg,
+                                                        const std::string& /*position*/,
+                                                        std::atomic<bool>& /*throttled*/,
+                                                        std::atomic<bool>& /*fatalCobraError*/,
+                                                        std::atomic<uint64_t>& sentCount) -> void {
+                Json::Value msgWithNoId(msg);
+                msgWithNoId.removeMember("id");
+            
+                cobraMetricsPublisher.push(republishChannel, msg);
+                sentCount++;
+            });
+
+        return bot.run(cobraBotConfig);
+    }
+} // namespace ix

ixbots/ixbots/IXCobraToCobraBot.h

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+/*
+ *  IXCobraToCobraBot.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2020 Machine Zone, Inc. All rights reserved.
+ */
+#pragma once
+
+#include <cstdint>
+#include <ixbots/IXStatsdClient.h>
+#include "IXCobraBotConfig.h"
+#include <stddef.h>
+#include <string>
+
+namespace ix
+{
+    int64_t cobra_to_cobra_bot(const ix::CobraBotConfig& config,
+                               const std::string& republishChannel,
+                               const std::string& publisherRolename,
+                               const std::string& publisherRolesecret);
+} // namespace ix