diff --git a/Cargo.toml b/Cargo.toml
index f2a5102..8b213a3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,6 @@ name = "mongo-to-clickhouse"
 version = "0.1.0"
 edition = "2021"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
 clickhouse-rs = "1.1.0-alpha.1"
diff --git a/src/main.rs b/src/main.rs
index 780fe5b..bf51a98 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -18,7 +18,7 @@ use std::{env, error::Error, sync::Arc};
 use tokio::task;
 use tokio_postgres::{Client as PostgresClient, NoTls};
 
-#[derive(Deserialize, Clone)]
+#[derive(Deserialize, Clone, Debug)]
 struct TenantConfig {
     name: String,
     mongo_uri: String,
@@ -29,7 +29,7 @@ struct TenantConfig {
     clickhouse_table: String,
 }
 
-#[derive(Deserialize)]
+#[derive(Deserialize, Debug)]
 struct AppConfig {
     tenants: Vec<TenantConfig>,
     postgres_db: String,
@@ -40,6 +40,7 @@ struct AppConfig {
 type PostgresPool = Pool<PostgresConnectionManager<NoTls>>;
 type ClickhousePoolType = ClickhousePool;
 
+#[derive(Debug)]
 struct AppState {
     config: AppConfig,
     postgres_pool: PostgresPool,
@@ -85,7 +86,9 @@ async fn process_tenant_records(
 
     let pg_pool = &app_state.postgres_pool;
     let ch_pool = &app_state.clickhouse_pools[pool_index];
+    println!("pg_pool {:?}", pg_pool);
     let pg_conn = pg_pool.get().await?;
+    println!("pg_conn {:?}", pg_conn);
     let row = pg_conn
         .query_one(
             "SELECT token FROM resume_token WHERE tenant_name = $1 ORDER BY id DESC LIMIT 1",
@@ -93,6 +96,7 @@ async fn process_tenant_records(
         )
         .await
         .ok();
+    println!("row {:?}", row);
     let mut options = mongodb::options::ChangeStreamOptions::default();
     if let Some(row) = row {
         let token_bytes: Vec<u8> = row.get("token");
@@ -100,7 +104,7 @@ async fn process_tenant_records(
             options.resume_after = Some(resume_token);
         }
     }
-
+    println!("app_state {:?}", &app_state.config);
     let change_stream_options = ChangeStreamOptions::default();
     let mut change_stream = mongo_collection.watch(None, change_stream_options).await?;
 
@@ -343,7 +347,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
         postgres_pool,
         clickhouse_pools,
     });
-
+    println!("app_state_main {:?}", app_state);
     let _ = run(app_state).await;
     tokio::signal::ctrl_c()
         .await