metrics: Rename metrics with consistent naming scheme

- Add zcash. prefix to common metrics.
- Use .total suffix for accumulating counters instead of .count.
- Group names where possible.
- Shorten names where possible (and still clear).

doc/book/src/user/metrics.md

@@ -36,20 +36,20 @@ restarting `zcashd` you can then test the endpoint by querying it:
 
 ```
 $ curl http://127.0.0.1:<port>
-# TYPE peer_outbound_messages counter
-peer_outbound_messages 181
+# TYPE zcash_net_out_messages counter
+zcash_net_out_messages 181
 
-# TYPE bytes_read counter
-bytes_read 3701998
+# TYPE zcash_net_in_bytes_total counter
+zcash_net_in_bytes_total 3701998
 
-# TYPE peer_inbound_messages counter
-peer_inbound_messages 184
+# TYPE zcash_net_in_messages counter
+zcash_net_in_messages 184
 
 # TYPE zcashd_build_info counter
 zcashd_build_info{version="v4.2.0"} 1
 
-# TYPE block_verified_block_count counter
-block_verified_block_count 162
+# TYPE zcash_chain_verified_block_total counter
+zcash_chain_verified_block_total 162
 ...
 ```
 

src/main.cpp

@@ -1694,9 +1694,9 @@ bool AcceptToMemoryPool(
 
             pool.EnsureSizeLimit();
 
-            MetricsGauge("mempool.size.transactions", mempool.size());
-            MetricsGauge("mempool.size.bytes", mempool.GetTotalTxSize());
-            MetricsGauge("mempool.usage.bytes", mempool.DynamicMemoryUsage());
+            MetricsGauge("zcash.mempool.size.transactions", mempool.size());
+            MetricsGauge("zcash.mempool.size.bytes", mempool.GetTotalTxSize());
+            MetricsGauge("zcash.mempool.usage.bytes", mempool.DynamicMemoryUsage());
         }
     }
 
@@ -3251,13 +3251,13 @@ struct PoolMetrics {
     do {                                         \
         if (poolMetrics.commitments) {           \
             MetricsStaticGauge(                  \
-                "pool.commitments",              \
+                "zcash.pool.commitments",        \
                 poolMetrics.commitments.value(), \
                 "name", poolName);               \
         }                                        \
         if (poolMetrics.value) {                 \
             MetricsStaticGauge(                  \
-                "pool.value.zatoshis",           \
+                "zcash.pool.value.zatoshis",     \
                 poolMetrics.value.value(),       \
                 "name", poolName);               \
         }                                        \
@@ -3293,7 +3293,7 @@ void static UpdateTip(CBlockIndex *pindexNew, const CChainParams& chainParams) {
     auto sproutPool = PoolMetrics::Sprout(pindexNew, pcoinsTip);
     auto saplingPool = PoolMetrics::Sapling(pindexNew, pcoinsTip);
 
-    MetricsGauge("block.verified.block.height", pindexNew->nHeight);
+    MetricsGauge("zcash.chain.verified.block.height", pindexNew->nHeight);
     RenderPoolMetrics("sprout", sproutPool);
     RenderPoolMetrics("sapling", saplingPool);
 
@@ -3428,8 +3428,8 @@ bool static ConnectTip(CValidationState& state, const CChainParams& chainparams,
     int64_t nTime6 = GetTimeMicros(); nTimePostConnect += nTime6 - nTime5; nTimeTotal += nTime6 - nTime1;
     LogPrint("bench", "  - Connect postprocess: %.2fms [%.2fs]\n", (nTime6 - nTime5) * 0.001, nTimePostConnect * 0.000001);
     LogPrint("bench", "- Connect block: %.2fms [%.2fs]\n", (nTime6 - nTime1) * 0.001, nTimeTotal * 0.000001);
-    MetricsIncrementCounter("block.verified.block.count");
-    MetricsHistogram("block.verified.block.seconds", (nTime6 - nTime1) * 0.000001);
+    MetricsIncrementCounter("zcash.chain.verified.block.total");
+    MetricsHistogram("zcash.chain.verified.block.seconds", (nTime6 - nTime1) * 0.000001);
     return true;
 }
 
@@ -6287,7 +6287,7 @@ bool static ProcessMessage(const CChainParams& chainparams, CNode* pfrom, string
 
         CInv inv(MSG_BLOCK, block.GetHash());
         LogPrint("net", "received block %s peer=%d\n", inv.hash.ToString(), pfrom->id);
-        MetricsIncrementCounter("sync.downloaded.block.count");
+        MetricsIncrementCounter("zcash.sync.block.downloaded.total");
 
         pfrom->AddInventoryKnown(inv);
 
@@ -6307,7 +6307,7 @@ bool static ProcessMessage(const CChainParams& chainparams, CNode* pfrom, string
                 Misbehaving(pfrom->GetId(), nDoS);
             }
         } else if (state.IsValid()) {
-            MetricsIncrementCounter("sync.verified.block.count");
+            MetricsIncrementCounter("zcash.sync.block.verified.total");
         }
 
     }

src/net.cpp

@@ -705,9 +705,9 @@ bool CNode::ReceiveMsgBytes(const char *pch, unsigned int nBytes)
         if (msg.complete()) {
             msg.nTime = GetTimeMicros();
             std::string strCommand = SanitizeString(msg.hdr.GetCommand());
-            MetricsIncrementCounter("peer.inbound.messages", "command", strCommand.c_str());
+            MetricsIncrementCounter("zcash.net.in.messages", "command", strCommand.c_str());
             MetricsCounter(
-                "peer.inbound.bytes", msg.hdr.nMessageSize,
+                "zcash.net.in.bytes", msg.hdr.nMessageSize,
                 "command", strCommand.c_str());
             messageHandlerCondition.notify_one();
         }
@@ -1111,7 +1111,7 @@ void ThreadSocketHandler()
         }
         if (vNodesSize != nPrevNodeCount) {
             nPrevNodeCount = vNodesSize;
-            MetricsGauge("pool.num_peers", nPrevNodeCount);
+            MetricsGauge("zcash.net.peers", nPrevNodeCount);
             uiInterface.NotifyNumConnectionsChanged(nPrevNodeCount);
         }
 
@@ -2009,14 +2009,14 @@ void CNode::RecordBytesRecv(uint64_t bytes)
 {
     LOCK(cs_totalBytesRecv);
     nTotalBytesRecv += bytes;
-    MetricsCounter("bytes.read", bytes);
+    MetricsCounter("zcash.net.in.bytes.total", bytes);
 }
 
 void CNode::RecordBytesSent(uint64_t bytes)
 {
     LOCK(cs_totalBytesSent);
     nTotalBytesSent += bytes;
-    MetricsCounter("bytes.written", bytes);
+    MetricsCounter("zcash.net.out.bytes.total", bytes);
 
     uint64_t now = GetTime();
     if (nMaxOutboundCycleStartTime + nMaxOutboundTimeframe < now)
@@ -2292,7 +2292,7 @@ void CNode::AbortMessage() UNLOCK_FUNCTION(cs_vSend)
 
 void CNode::EndMessage() UNLOCK_FUNCTION(cs_vSend)
 {
-    MetricsIncrementCounter("peer.outbound.messages", "command", strSendCommand.c_str());
+    MetricsIncrementCounter("zcash.net.out.messages", "command", strSendCommand.c_str());
     // The -*messagestest options are intentionally not documented in the help message,
     // since they are only used during development to debug the networking code and are
     // not intended for end-users.
@@ -2327,7 +2327,7 @@ void CNode::EndMessage() UNLOCK_FUNCTION(cs_vSend)
     ssSend.GetAndClear(*it);
     nSendSize += (*it).size();
     MetricsCounter(
-        "peer.outbound.bytes", (*it).size(),
+        "zcash.net.out.bytes", (*it).size(),
         "command", strSendCommand.c_str());
     strSendCommand.clear();