refactor(session): Remove `SessionRef`

[ariesdevil]

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Summary

Remove SessionRef for simplify codes.

Fixes #issue

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1 Ignored Deployment

Name	Status	Preview	Updated
databend	⬜️ Ignored (Inspect)		Aug 23, 2022 at 11:18AM (UTC)

[BohuTANG]

 cargo fmt --all -- --check
Diff in /workspace/query/tests/it/tests/context.rs at line 45:
     let dummy_session = sessions.create_session(SessionType::Dummy).await?;
 
     // Set user with all privileges
-    let mut user_info = UserInfo::new(
-        "root",
-        "127.0.0.1",
-        AuthInfo::Password {
-            hash_method: PasswordHashMethod::Sha256,
-            hash_value: Vec::from("pass"),
-        },
-    );
+    let mut user_info = UserInfo::new("root", "127.0.0.1", AuthInfo::Password {
+        hash_method: PasswordHashMethod::Sha256,
+        hash_value: Vec::from("pass"),
+    });
     user_info.grants.grant_privileges(
         &GrantObject::Global,
         UserPrivilegeSet::available_privileges_on_global(),
Diff in /workspace/query/tests/it/tests/context.rs at line 75:
     let sessions = SessionManagerBuilder::create_with_conf(config.clone()).build()?;
     let dummy_session = sessions.create_session(SessionType::Dummy).await?;
 
-    let mut user_info = UserInfo::new(
-        "root",
-        "127.0.0.1",
-        AuthInfo::Password {
-            hash_method: PasswordHashMethod::Sha256,
-            hash_value: Vec::from("pass"),
-        },
-    );
+    let mut user_info = UserInfo::new("root", "127.0.0.1", AuthInfo::Password {
+        hash_method: PasswordHashMethod::Sha256,
+        hash_value: Vec::from("pass"),
+    });

[BohuTANG]

Failed to execute. Collected info: Orig exception: The current accept connection has exceeded max_active_sessions config

[ariesdevil]

Failed to execute. Collected info: Orig exception: The current accept connection has exceeded max_active_sessions config

I'm working on it

[sundy-li]

destory session should be called in http/clickhouse handlers.

[ariesdevil]

@mergifyio update

[mergify[bot]]

update

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