add blob open count stat

src/main/java/com/alibaba/druid/filter/stat/StatFilter.java

@@ -507,7 +507,7 @@ public class StatFilter extends FilterEventAdapter implements StatFilterMBean {
             if (index != 0) {
                 out.writeComma();
             }
-            
+
             Object value = parameter.getValue();
             if (value == null) {
                 out.writeNull();
@@ -685,6 +685,30 @@ public class StatFilter extends FilterEventAdapter implements StatFilterMBean {
         return clob;
     }
 
+    @Override
+    public Blob callableStatement_getBlob(FilterChain chain, CallableStatementProxy statement, int parameterIndex)
+                                                                                                                  throws SQLException {
+        Blob blob = chain.callableStatement_getBlob(statement, parameterIndex);
+
+        if (blob != null) {
+            blobOpenAfter(chain.getDataSource().getDataSourceStat(), statement, blob);
+        }
+
+        return blob;
+    }
+
+    @Override
+    public Blob callableStatement_getBlob(FilterChain chain, CallableStatementProxy statement, String parameterName)
+                                                                                                                    throws SQLException {
+        Blob blob = chain.callableStatement_getBlob(statement, parameterName);
+
+        if (blob != null) {
+            blobOpenAfter(chain.getDataSource().getDataSourceStat(), statement, blob);
+        }
+
+        return blob;
+    }
+
     @Override
     public Clob callableStatement_getClob(FilterChain chain, CallableStatementProxy statement, int parameterIndex)
                                                                                                                   throws SQLException {
@@ -776,6 +800,10 @@ public class StatFilter extends FilterEventAdapter implements StatFilterMBean {
             clobOpenAfter(chain.getDataSource().getDataSourceStat(), statement, (ClobProxy) obj);
         }
 
+        if (obj instanceof Blob) {
+            blobOpenAfter(chain.getDataSource().getDataSourceStat(), statement, (Blob) obj);
+        }
+
         return obj;
     }
 
@@ -788,6 +816,10 @@ public class StatFilter extends FilterEventAdapter implements StatFilterMBean {
             clobOpenAfter(chain.getDataSource().getDataSourceStat(), statement, (ClobProxy) obj);
         }
 
+        if (obj instanceof Blob) {
+            blobOpenAfter(chain.getDataSource().getDataSourceStat(), statement, (Blob) obj);
+        }
+
         return obj;
     }
 
@@ -801,6 +833,10 @@ public class StatFilter extends FilterEventAdapter implements StatFilterMBean {
             clobOpenAfter(chain.getDataSource().getDataSourceStat(), statement, (ClobProxy) obj);
         }
 
+        if (obj instanceof Blob) {
+            blobOpenAfter(chain.getDataSource().getDataSourceStat(), statement, (Blob) obj);
+        }
+
         return obj;
     }
 
@@ -808,6 +844,10 @@ public class StatFilter extends FilterEventAdapter implements StatFilterMBean {
         clobOpenAfter(dataSourceStat, rs.getStatementProxy(), clob);
     }
 
+    private void blobOpenAfter(JdbcDataSourceStat dataSourceStat, StatementProxy stmt, Blob blob) {
+        dataSourceStat.incrementBlobOpenCount();
+    }
+
     private void clobOpenAfter(JdbcDataSourceStat dataSourceStat, StatementProxy stmt, ClobProxy clob) {
         dataSourceStat.incrementClobOpenCount();
 

src/main/java/com/alibaba/druid/pool/DruidDataSource.java

@@ -815,7 +815,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
                 discardConnection(holder.getConnection());
                 return;
             }
-            
+
             final long lastActiveTimeMillis = System.currentTimeMillis();
             lock.lockInterruptibly();
             try {
@@ -1774,6 +1774,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
         dataMap.put("ConnectionHoldTimeHistogram", this.getDataSourceStat().getConnectionHoldHistogram().toArray());
         dataMap.put("RemoveAbandoned", this.isRemoveAbandoned());
         dataMap.put("ClobOpenCount", this.getDataSourceStat().getClobOpenCount());
+        dataMap.put("BlobOpenCount", this.getDataSourceStat().getBlobOpenCount());
 
         return dataMap;
     }

src/main/java/com/alibaba/druid/stat/JdbcDataSourceStat.java

@@ -68,6 +68,8 @@ public class JdbcDataSourceStat implements JdbcDataSourceStatMBean {
 
     private final AtomicLong                                    clobOpenCount           = new AtomicLong();
 
+    private final AtomicLong                                    blobOpenCount           = new AtomicLong();
+
     public JdbcDataSourceStat(String name, String url){
         this(name, url, null);
     }
@@ -101,6 +103,7 @@ public class JdbcDataSourceStat implements JdbcDataSourceStatMBean {
     }
 
     public void reset() {
+        blobOpenCount.set(0);
         clobOpenCount.set(0);
 
         connectionStat.reset();
@@ -318,4 +321,12 @@ public class JdbcDataSourceStat implements JdbcDataSourceStatMBean {
         clobOpenCount.incrementAndGet();
     }
 
+    public long getBlobOpenCount() {
+        return blobOpenCount.get();
+    }
+
+    public void incrementBlobOpenCount() {
+        blobOpenCount.incrementAndGet();
+    }
+
 }