Add total counter of identical tables

.gitignore

@@ -15,3 +15,5 @@ target/
 .DS_Store
 postgres-data1/
 postgres-data2/
+
+script.sh

src/diff/table/query/output/mod.rs

@@ -22,6 +22,22 @@ impl Display for TableSource {
     }
 }
 
+// Represents a counter for the identical tables in total
+#[derive(Debug, Clone)]
+pub struct IdenticalTablesCounter {
+    pub count: i64,
+}
+
+impl IdenticalTablesCounter {
+    pub fn new(count: i64) -> Self {
+        Self { count }
+    }
+
+    pub fn increment(&mut self) {
+        self.count += 1;
+    }
+}
+
 /// Represents the difference in table counts between two tables.
 #[cfg_attr(test, derive(PartialEq))]
 #[derive(Debug, Clone)]
@@ -66,6 +82,22 @@ impl TableDiffOutput {
         matches!(self, Self::Diff(_, _) | Self::NotExists(_, _))
     }
 
+    // Prints the enum value of the table diff output as string
+    pub fn enum_as_string(&self) -> String {
+        match self {
+            Self::NoCountDiff(_table, _count) => "NoCountDiff".to_string(),
+            Self::NotExists(_table, _source) => "NotExists".to_string(),
+            Self::Diff(_table, _diffs) => "Diff".to_string(),
+            TableDiffOutput::NoPrimaryKeyFound(_table) => "NoPrimaryKeyFound".to_string(),
+            TableDiffOutput::NoDiffWithDuration(_table, _duration) => {
+                "NoDiffWithDuration".to_string()
+            }
+            TableDiffOutput::DataDiffWithDuration(_table_name, _position, _offset, _duration) => {
+                "DataDiffWithDuration".to_string()
+            }
+        }
+    }
+
     /// Converts the table difference output to a colored string.
     pub fn to_string(&self) -> ColoredString {
         match self {

src/diff/table/table_differ.rs

@@ -2,7 +2,9 @@ use crate::diff::diff_payload::DiffPayload;
 use crate::diff::table::query::input::{
     QueryHashDataInput, QueryPrimaryKeysInput, QueryTableCountInput, QueryTableNamesInput,
 };
-use crate::diff::table::query::output::{TableCountDiff, TableDiffOutput, TableSource};
+use crate::diff::table::query::output::{
+    IdenticalTablesCounter, TableCountDiff, TableDiffOutput, TableSource,
+};
 
 use crate::diff::table::query::table_query_executor::{
     TableDualSourceQueryExecutor, TableSingleSourceQueryExecutor,
@@ -16,6 +18,7 @@ use tracing::{debug, info};
 
 use crate::diff::diff_output::DiffOutput;
 use crate::diff::types::SchemaName;
+use std::sync::{Arc, Mutex};
 use std::time::Instant;
 
 pub struct TableDiffer<TQE: TableSingleSourceQueryExecutor, DTQE: TableDualSourceQueryExecutor> {
@@ -42,6 +45,8 @@ impl<TQE: TableSingleSourceQueryExecutor, DTQE: TableDualSourceQueryExecutor>
 
         let sorted_tables = tables.to_owned();
 
+        let identical_tables_counter = Arc::new(Mutex::new(IdenticalTablesCounter::new(0)));
+
         let futures = sorted_tables.iter().map(|table_name| async {
             let start = Instant::now();
 
@@ -82,6 +87,14 @@ impl<TQE: TableSingleSourceQueryExecutor, DTQE: TableDualSourceQueryExecutor>
 
             debug!("##############################################");
 
+            // Increment identical tables counter
+            let identical_tables_counter = identical_tables_counter.clone();
+            self.increase_counter_of_identical_tables(
+                identical_tables_counter,
+                table_diff_result.clone(),
+            )
+            .await;
+
             // If we only care about counts, return the result
             if diff_payload.only_count() {
                 return table_diff_result;
@@ -167,6 +180,20 @@ impl<TQE: TableSingleSourceQueryExecutor, DTQE: TableDualSourceQueryExecutor>
                 .bold()
         );
 
+        let identical_tables_counter = identical_tables_counter.lock().unwrap();
+        let rate = (identical_tables_counter.count as f64 / tables.len() as f64) * 100.0;
+        info!(
+            "{}",
+            format!(
+                "Identical tables found: {} out of {}, rate: {}%",
+                identical_tables_counter.count,
+                tables.len(),
+                rate
+            )
+            .bright_blue()
+            .bold()
+        );
+
         info!("##############################################");
         info!("{}", "Table analysis results 👇".bright_magenta().bold());
 
@@ -197,6 +224,23 @@ impl<TQE: TableSingleSourceQueryExecutor, DTQE: TableDualSourceQueryExecutor>
         Ok(tables)
     }
 
+    pub async fn increase_counter_of_identical_tables(
+        &self,
+        identical_tables_counter: Arc<Mutex<IdenticalTablesCounter>>,
+        table_diff_result: TableDiffOutput,
+    ) {
+        // Increment identical tables counter for specific cases
+        let vec: Vec<String> = vec![
+            "NoCountDiff".into(),
+            "NoDiffWithDuration".into(),
+            "NoPrimaryKeyFound".into(), // this is added since we can't compare tables without primary keys
+        ];
+        if vec.contains(&table_diff_result.enum_as_string()) {
+            let mut counter = identical_tables_counter.lock().unwrap();
+            counter.increment();
+        }
+    }
+
     fn extract_result(
         table_name: &str,
         first_result: Result<i64>,