stats: move statsd_client to stats directory

In upcoming commits, message sending will be split off into a separate
file and stats capabilities will be fleshed out. Prepare for that by
giving it its own directory.

Also get rid of `statsd` namespace, it is entirely unnecessary.

Co-authored-by: UdjinM6 <UdjinM6@users.noreply.github.com>

contrib/devtools/copyright_header.py

@@ -26,7 +26,7 @@ EXCLUDE = [
     'src/crypto/*',
     'src/ctpl_stl.h',
     'src/reverse_iterator.h',
-    'src/statsd_client.cpp',
+    'src/stats/client.cpp',
     'src/test/fuzz/FuzzedDataProvider.h',
     'src/tinyformat.h',
     'src/bench/nanobench.h',

src/Makefile.am

@@ -313,7 +313,7 @@ BITCOIN_CORE_H = \
   spork.h \
   stacktraces.h \
   streams.h \
-  statsd_client.h \
+  stats/client.h \
   support/allocators/mt_pooled_secure.h \
   support/allocators/pool.h \
   support/allocators/pooled_secure.h \
@@ -526,7 +526,7 @@ libbitcoin_server_a_SOURCES = \
   script/sigcache.cpp \
   shutdown.cpp \
   spork.cpp \
-  statsd_client.cpp \
+  stats/client.cpp \
   timedata.cpp \
   torcontrol.cpp \
   txdb.cpp \

src/init.cpp

@@ -105,7 +105,7 @@
 #include <llmq/snapshot.h>
 #include <llmq/signing_shares.h>
 
-#include <statsd_client.h>
+#include <stats/client.h>
 
 #include <algorithm>
 #include <condition_variable>
@@ -1539,11 +1539,11 @@ bool AppInitMain(NodeContext& node, interfaces::BlockAndHeaderTipInfo* tip_info)
     // We need to initialize g_stats_client early as currently, g_stats_client is called
     // regardless of whether transmitting stats are desirable or not and if
     // g_stats_client isn't present when that attempt is made, the client will crash.
-    ::g_stats_client = std::make_unique<statsd::StatsdClient>(args.GetArg("-statshost", DEFAULT_STATSD_HOST),
-                                                              args.GetArg("-statshostname", DEFAULT_STATSD_HOSTNAME),
-                                                              args.GetArg("-statsport", DEFAULT_STATSD_PORT),
-                                                              args.GetArg("-statsns", DEFAULT_STATSD_NAMESPACE),
-                                                              args.GetBoolArg("-statsenabled", DEFAULT_STATSD_ENABLE));
+    ::g_stats_client = std::make_unique<StatsdClient>(args.GetArg("-statshost", DEFAULT_STATSD_HOST),
+                                                      args.GetArg("-statshostname", DEFAULT_STATSD_HOSTNAME),
+                                                      args.GetArg("-statsport", DEFAULT_STATSD_PORT),
+                                                      args.GetArg("-statsns", DEFAULT_STATSD_NAMESPACE),
+                                                      args.GetBoolArg("-statsenabled", DEFAULT_STATSD_ENABLE));
 
     {
 

src/net.cpp

@@ -41,7 +41,7 @@
 #include <coinjoin/coinjoin.h>
 #include <evo/deterministicmns.h>
 
-#include <statsd_client.h>
+#include <stats/client.h>
 
 #ifdef WIN32
 #include <string.h>

src/net_processing.cpp

@@ -69,7 +69,7 @@
 #include <llmq/signing_shares.h>
 #include <llmq/snapshot.h>
 
-#include <statsd_client.h>
+#include <stats/client.h>
 
 /** Maximum number of in-flight objects from a peer */
 static constexpr int32_t MAX_PEER_OBJECT_IN_FLIGHT = 100;

src/stats/client.cpp

@@ -33,7 +33,7 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 **/
 
-#include <statsd_client.h>
+#include <stats/client.h>
 
 #include <compat.h>
 #include <netbase.h>
@@ -43,9 +43,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <cstdio>
 #include <random>
 
-std::unique_ptr<statsd::StatsdClient> g_stats_client;
+std::unique_ptr<StatsdClient> g_stats_client;
 
-namespace statsd {
 bool StatsdClient::ShouldSend(float sample_rate)
 {
     sample_rate = std::clamp(sample_rate, 0.f, 1.f);
@@ -193,4 +192,3 @@ bool StatsdClient::send(const std::string& message)
 
     return true;
 }
-} // namespace statsd

src/stats/client.h

@@ -3,15 +3,15 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#ifndef BITCOIN_STATSD_CLIENT_H
-#define BITCOIN_STATSD_CLIENT_H
+#ifndef BITCOIN_STATS_CLIENT_H
+#define BITCOIN_STATS_CLIENT_H
 
 #include <random.h>
 #include <threadsafety.h>
 #include <util/sock.h>
 
-#include <string>
 #include <memory>
+#include <string>
 
 static constexpr bool DEFAULT_STATSD_ENABLE{false};
 static constexpr uint16_t DEFAULT_STATSD_PORT{8125};
@@ -24,8 +24,8 @@ static constexpr int DEFAULT_STATSD_PERIOD{60};
 static constexpr int MIN_STATSD_PERIOD{5};
 static constexpr int MAX_STATSD_PERIOD{60 * 60};
 
-namespace statsd {
-class StatsdClient {
+class StatsdClient
+{
 public:
     explicit StatsdClient(const std::string& host, const std::string& nodename, uint16_t port,
                             const std::string& ns, bool enabled);
@@ -66,8 +66,7 @@ private:
     const std::string m_nodename;
     const std::string m_ns;
 };
-} // namespace statsd
 
-extern std::unique_ptr<statsd::StatsdClient> g_stats_client;
+extern std::unique_ptr<StatsdClient> g_stats_client;
 
-#endif // BITCOIN_STATSD_CLIENT_H
+#endif // BITCOIN_STATS_CLIENT_H

src/test/util/setup_common.cpp

@@ -39,7 +39,7 @@
 #include <scheduler.h>
 #include <script/sigcache.h>
 #include <spork.h>
-#include <statsd_client.h>
+#include <stats/client.h>
 #include <streams.h>
 #include <test/util/index.h>
 #include <txdb.h>
@@ -183,7 +183,7 @@ BasicTestingSetup::BasicTestingSetup(const std::string& chainName, const std::ve
     SetupNetworking();
     InitSignatureCache();
     InitScriptExecutionCache();
-    ::g_stats_client = std::make_unique<statsd::StatsdClient>(
+    ::g_stats_client = std::make_unique<StatsdClient>(
         m_node.args->GetArg("-statshost", DEFAULT_STATSD_HOST),
         m_node.args->GetArg("-statshostname", DEFAULT_STATSD_HOSTNAME),
         m_node.args->GetArg("-statsport", DEFAULT_STATSD_PORT),

src/txorphanage.cpp

@@ -7,7 +7,7 @@
 #include <consensus/validation.h>
 #include <logging.h>
 #include <policy/policy.h>
-#include <statsd_client.h>
+#include <stats/client.h>
 
 #include <cassert>
 

src/validation.cpp

@@ -66,7 +66,7 @@
 #include <llmq/instantsend.h>
 #include <llmq/chainlocks.h>
 
-#include <statsd_client.h>
+#include <stats/client.h>
 
 #include <algorithm>
 #include <cassert>

test/lint/lint-locale-dependence.sh

@@ -45,7 +45,7 @@ KNOWN_VIOLATIONS=(
     "src/bitcoin-tx.cpp.*stoul"
     "src/dbwrapper.cpp:.*vsnprintf"
     "src/rest.cpp:.*strtol"
-    "src/statsd_client.cpp:.*snprintf"
+    "src/stats/client.cpp:.*snprintf"
     "src/test/dbwrapper_tests.cpp:.*snprintf"
     "src/test/fuzz/locale.cpp"
     "src/test/fuzz/string.cpp"

test/util/data/non-backported.txt

@@ -29,7 +29,8 @@ src/rpc/quorums.cpp
 src/saltedhasher.*
 src/spork.*
 src/stacktraces.*
-src/statsd_client.*
+src/stats/*.cpp
+src/stats/*.h
 src/test/block_reward_reallocation_tests.cpp
 src/test/bls_tests.cpp
 src/test/dip0020opcodes_tests.cpp