refact(session connection): remove session connection state table

[irenarindos]

WIP

This PR removes the session_connection_state table, replacing it with the new field connected_time_range on session_connection

[tmessi]

I still need to review the go code, but I have a few comments/requests on the sql.

[tmessi]

I'm still reviewing the go changes, but I have some comments on the sql if you want to take a look at those first.

[github-actions]

Database schema diff between main and irindos-session-connection-states @ 9aca523

To understand how these diffs are generated and some limitations see the
documentation of the script.

Functions

diff --git a/.schema-diff/funcs_477519b0ecd46d23d27aa6774519e4be4ca548ae/check_connection_state_transition.sql b/.schema-diff/funcs_477519b0ecd46d23d27aa6774519e4be4ca548ae/check_connection_state_transition.sql
new file mode 100644
index 000000000..2e277cab1
--- /dev/null
+++ b/.schema-diff/funcs_477519b0ecd46d23d27aa6774519e4be4ca548ae/check_connection_state_transition.sql
@@ -0,0 +1,54 @@
+--
+-- postgresql database dump
+--
+
+-- dumped from database version 13.15
+-- dumped by pg_dump version 14.12 (ubuntu 14.12-1.pgdg22.04+1)
+
+set statement_timeout = 0;
+set lock_timeout = 0;
+set idle_in_transaction_session_timeout = 0;
+set client_encoding = 'utf8';
+set standard_conforming_strings = on;
+select pg_catalog.set_config('search_path', '', false);
+set check_function_bodies = false;
+set xmloption = content;
+set client_min_messages = warning;
+set row_security = off;
+
+--
+-- name: check_connection_state_transition(); type: function; schema: public; owner: -
+--
+
+create function public.check_connection_state_transition() returns trigger
+    language plpgsql
+    as $$
+    begin
+    -- if old state was authorized, allow transition to connected or closed
+    if old.connected_time_range is null then
+      return new;
+    end if;
+
+    -- if old state was closed, no transitions are allowed
+    if upper(old.connected_time_range) < 'infinity' and old.connected_time_range != new.connected_time_range then
+      raise exception 'invalid state transition from closed';
+    end if;
+
+    -- if old state was connected, allow transition to closed
+    if upper(old.connected_time_range) =  'infinity'                      and
+       upper(new.connected_time_range) != 'infinity'                      and
+       lower(old.connected_time_range) =  lower(new.connected_time_range) then
+      return new;
+    else
+      raise exception 'invalid state transition from connected';
+    end if;
+
+    return new;
+    end;
+  $$;
+
+
+--
+-- postgresql database dump complete
+--
+
diff --git a/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/insert_session_connection_state.sql b/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/insert_session_connection_state.sql
deleted file mode 100644
index e163e94a9..000000000
--- a/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/insert_session_connection_state.sql
+++ /dev/null
@@ -1,52 +0,0 @@
---
--- postgresql database dump
---
-
--- dumped from database version 13.15
--- dumped by pg_dump version 14.12 (ubuntu 14.12-1.pgdg22.04+1)
-
-set statement_timeout = 0;
-set lock_timeout = 0;
-set idle_in_transaction_session_timeout = 0;
-set client_encoding = 'utf8';
-set standard_conforming_strings = on;
-select pg_catalog.set_config('search_path', '', false);
-set check_function_bodies = false;
-set xmloption = content;
-set client_min_messages = warning;
-set row_security = off;
-
---
--- name: insert_session_connection_state(); type: function; schema: public; owner: -
---
-
-create function public.insert_session_connection_state() returns trigger
-    language plpgsql
-    as $$
-  begin
-
-    update session_connection_state
-       set end_time = now()
-     where connection_id = new.connection_id
-       and end_time is null;
-
-    if not found then
-      new.previous_end_time = null;
-      new.start_time = now();
-      new.end_time = null;
-      return new;
-    end if;
-
-    new.previous_end_time = now();
-    new.start_time = now();
-    new.end_time = null;
-    return new;
-
-  end;
-  $$;
-
-
---
--- postgresql database dump complete
---
-
diff --git a/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/insert_new_connection_state.sql b/.schema-diff/funcs_477519b0ecd46d23d27aa6774519e4be4ca548ae/update_connected_time_range_on_closed_reason.sql
similarity index 54%
rename from .schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/insert_new_connection_state.sql
rename to .schema-diff/funcs_477519b0ecd46d23d27aa6774519e4be4ca548ae/update_connected_time_range_on_closed_reason.sql
index 085e9652a..4ac9443ac 100644
--- a/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/insert_new_connection_state.sql
+++ b/.schema-diff/funcs_477519b0ecd46d23d27aa6774519e4be4ca548ae/update_connected_time_range_on_closed_reason.sql
@@ -17,18 +17,20 @@ set client_min_messages = warning;
 set row_security = off;
 
 --
--- name: insert_new_connection_state(); type: function; schema: public; owner: -
+-- name: update_connected_time_range_on_closed_reason(); type: function; schema: public; owner: -
 --
 
-create function public.insert_new_connection_state() returns trigger
+create function public.update_connected_time_range_on_closed_reason() returns trigger
     language plpgsql
     as $$
-  begin
-    insert into session_connection_state (connection_id, state)
-    values
-      (new.public_id, 'authorized');
+    begin
+      if new.closed_reason is not null then
+          if old.connected_time_range is null or upper(old.connected_time_range) = 'infinity'::timestamptz then
+             new.connected_time_range = tstzrange(lower(old.connected_time_range), now(), '[]');
+          end if;
+      end if;
     return new;
-  end;
+    end;
   $$;
 
 
diff --git a/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/update_connection_state_on_closed_reason.sql b/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/update_connection_state_on_closed_reason.sql
deleted file mode 100644
index f4ed4be97..000000000
--- a/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/update_connection_state_on_closed_reason.sql
+++ /dev/null
@@ -1,48 +0,0 @@
---
--- postgresql database dump
---
-
--- dumped from database version 13.15
--- dumped by pg_dump version 14.12 (ubuntu 14.12-1.pgdg22.04+1)
-
-set statement_timeout = 0;
-set lock_timeout = 0;
-set idle_in_transaction_session_timeout = 0;
-set client_encoding = 'utf8';
-set standard_conforming_strings = on;
-select pg_catalog.set_config('search_path', '', false);
-set check_function_bodies = false;
-set xmloption = content;
-set client_min_messages = warning;
-set row_security = off;
-
---
--- name: update_connection_state_on_closed_reason(); type: function; schema: public; owner: -
---
-
-create function public.update_connection_state_on_closed_reason() returns trigger
-    language plpgsql
-    as $$
-    begin
-        if new.closed_reason is not null then
-            -- check to see if there's a closed state already, before inserting a new one.
-            perform from
-                session_connection_state cs
-            where
-                    cs.connection_id = new.public_id and
-                    cs.state = 'closed';
-            if not found then
-                insert into session_connection_state (connection_id, state)
-                values
-                    (new.public_id, 'closed');
-            end if;
-        end if;
-    return new;
-    end;
-$$;
-
-
---
--- postgresql database dump complete
---
-
diff --git a/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/update_session_state_on_termination_reason.sql b/.schema-diff/funcs_477519b0ecd46d23d27aa6774519e4be4ca548ae/update_session_state_on_termination_reason.sql
index 856ccd00a..1026c0011 100644
--- a/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/update_session_state_on_termination_reason.sql
+++ b/.schema-diff/funcs_477519b0ecd46d23d27aa6774519e4be4ca548ae/update_session_state_on_termination_reason.sql
@@ -25,42 +25,26 @@ create function public.update_session_state_on_termination_reason() returns trig
     as $$
   begin
     if new.termination_reason is not null then
-      perform  from 
-        session
-      where 
-        public_id = new.public_id and 
-        public_id not in (
-            select session_id 
-              from session_connection
-            where
-              public_id in (
-                select connection_id
-                  from session_connection_state
-                where 
-                  state != 'closed' and 
-                  end_time is null
-              )
-        );
-      if not found then 
-        raise 'session %s has open connections', new.public_id;
-      end if;
-
+      perform
+         from session_connection
+        where session_id                  = new.public_id
+          and upper(connected_time_range) = 'infinity'::timestamptz;
+        if found then
+            raise 'session %s has open connections', new.public_id;
+        end if;
       -- check to see if there's a terminated state already, before inserting a
       -- new one.
-      perform from
-        session_state ss
-      where
-        ss.session_id = new.public_id and 
-        ss.state = 'terminated';
-      if found then 
+      perform
+         from session_state ss
+        where ss.session_id = new.public_id and
+                   ss.state = 'terminated';
+      if found then
         return new;
       end if;
-
-      insert into session_state (session_id, state)
-      values
-        (new.public_id, 'terminated');
-      end if;
-      return new;
+      insert into session_state (session_id,    state)
+           values               (new.public_id, 'terminated');
+    end if;
+    return new;
   end;
   $$;
 
diff --git a/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/wh_insert_session_connection.sql b/.schema-diff/funcs_477519b0ecd46d23d27aa6774519e4be4ca548ae/wh_insert_session_connection.sql
index 99baf668b..eca77642e 100644
--- a/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/wh_insert_session_connection.sql
+++ b/.schema-diff/funcs_477519b0ecd46d23d27aa6774519e4be4ca548ae/wh_insert_session_connection.sql
@@ -23,57 +23,57 @@ set row_security = off;
 create function public.wh_insert_session_connection() returns trigger
     language plpgsql
     as $$
-declare
+    declare
   new_row wh_session_connection_accumulating_fact%rowtype;
-begin
-with
-    authorized_timestamp (date_dim_key, time_dim_key, ts) as (
-        select wh_date_key(start_time), wh_time_key(start_time), start_time
-        from session_connection_state
-        where connection_id = new.public_id
-          and state = 'authorized'
-    ),
-    session_dimension (host_dim_key, user_dim_key, credential_group_dim_key) as (
+  begin
+    with
+      authorized_timestamp (date_dim_key, time_dim_key, ts) as (
+        select wh_date_key(create_time), wh_time_key(create_time), create_time
+          from session_connection
+         where public_id = new.public_id
+           and connected_time_range is null
+      ),
+      session_dimension (host_dim_key, user_dim_key, credential_group_dim_key) as (
         select host_key, user_key, credential_group_key
-        from wh_session_accumulating_fact
-        where session_id = new.session_id
+          from wh_session_accumulating_fact
+         where session_id = new.session_id
+      )
+    insert into wh_session_connection_accumulating_fact (
+                connection_id,
+                session_id,
+                host_key,
+                user_key,
+                credential_group_key,
+                connection_authorized_date_key,
+                connection_authorized_time_key,
+                connection_authorized_time,
+                client_tcp_address,
+                client_tcp_port_number,
+                endpoint_tcp_address,
+                endpoint_tcp_port_number,
+                bytes_up,
+                bytes_down
     )
-insert into wh_session_connection_accumulating_fact (
-        connection_id,
-        session_id,
-        host_key,
-        user_key,
-        credential_group_key,
-        connection_authorized_date_key,
-        connection_authorized_time_key,
-        connection_authorized_time,
-        client_tcp_address,
-        client_tcp_port_number,
-        endpoint_tcp_address,
-        endpoint_tcp_port_number,
-        bytes_up,
-        bytes_down
-    )
-select new.public_id,
-       new.session_id,
-       session_dimension.host_dim_key,
-       session_dimension.user_dim_key,
-       session_dimension.credential_group_dim_key,
-       authorized_timestamp.date_dim_key,
-       authorized_timestamp.time_dim_key,
-       authorized_timestamp.ts,
-       new.client_tcp_address,
-       new.client_tcp_port,
-       new.endpoint_tcp_address,
-       new.endpoint_tcp_port,
-       new.bytes_up,
-       new.bytes_down
-from authorized_timestamp,
-     session_dimension
-         returning * into strict new_row;
-return null;
-end;
-$$;
+    select new.public_id,
+           new.session_id,
+           session_dimension.host_dim_key,
+           session_dimension.user_dim_key,
+           session_dimension.credential_group_dim_key,
+           authorized_timestamp.date_dim_key,
+           authorized_timestamp.time_dim_key,
+           authorized_timestamp.ts,
+           new.client_tcp_address,
+           new.client_tcp_port,
+           new.endpoint_tcp_address,
+           new.endpoint_tcp_port,
+           new.bytes_up,
+           new.bytes_down
+      from authorized_timestamp,
+           session_dimension
+ returning * into strict new_row;
+    return null;
+  end;
+  $$;
 
 
 --
diff --git a/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/wh_insert_session_connection_state.sql b/.schema-diff/funcs_477519b0ecd46d23d27aa6774519e4be4ca548ae/wh_insert_session_connection_state.sql
index 35fdd0b3b..98aa54722 100644
--- a/.schema-diff/funcs_85f98a4a678cb56286a5862c2fb76d34abbb12cc/wh_insert_session_connection_state.sql
+++ b/.schema-diff/funcs_477519b0ecd46d23d27aa6774519e4be4ca548ae/wh_insert_session_connection_state.sql
@@ -23,37 +23,42 @@ set row_security = off;
 create function public.wh_insert_session_connection_state() returns trigger
     language plpgsql
     as $$
-  declare
-    date_col text;
-    time_col text;
-    ts_col text;
-    q text;
-    connection_row wh_session_connection_accumulating_fact%rowtype;
-  begin
-    if new.state = 'authorized' then
-      -- the authorized state is the first state which is handled by the
-      -- wh_insert_session_connection trigger. the update statement in this
-      -- trigger will fail for the authorized state because the row for the
-      -- session connection has not yet been inserted into the
-      -- wh_session_connection_accumulating_fact table.
+    declare
+               state text;
+            date_col text;
+            time_col text;
+              ts_col text;
+                   q text;
+      connection_row wh_session_connection_accumulating_fact%rowtype;
+    begin
+      if new.connected_time_range is null then
+        -- indicates authorized connection. the update statement in this
+        -- trigger will fail for the authorized state because the row for the
+        -- session connection has not yet been inserted into the
+        -- wh_session_connection_accumulating_fact table.
+        return null;
+      end if;
+
+      if upper(new.connected_time_range) = 'infinity'::timestamptz then
+            update wh_session_connection_accumulating_fact
+               set (connection_connected_date_key,
+                    connection_connected_time_key,
+                    connection_connected_time) = (select wh_date_key(new.update_time),
+                                                         wh_time_key(new.update_time),
+                                                         new.update_time::timestamptz)
+              where connection_id = new.public_id;
+      else
+             update wh_session_connection_accumulating_fact
+                set (connection_closed_date_key,
+                     connection_closed_time_key,
+                     connection_closed_time) = (select wh_date_key(new.update_time),
+                                                       wh_time_key(new.update_time),
+                                                       new.update_time::timestamptz)
+               where connection_id = new.public_id;
+      end if;
+
       return null;
-    end if;
-
-    date_col = 'connection_' || new.state || '_date_key';
-    time_col = 'connection_' || new.state || '_time_key';
-    ts_col   = 'connection_' || new.state || '_time';
-
-    q = format('update wh_session_connection_accumulating_fact
-                   set (%i, %i, %i) = (select wh_date_key(%l), wh_time_key(%l), %l::timestamptz)
-                 where connection_id = %l
-                returning *',
-                date_col,       time_col,       ts_col,
-                new.start_time, new.start_time, new.start_time,
-                new.connection_id);
-    execute q into strict connection_row;
-
-    return null;
-  end;
+    end;
   $$;
 
 

Tables

diff --git a/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/public session_connection_state.sql b/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/public session_connection_state.sql
deleted file mode 100644
index 267d87acc..000000000
--- a/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/public session_connection_state.sql	
+++ /dev/null
@@ -1,22 +0,0 @@
---
--- postgresql database dump
---
-
--- dumped from database version 13.15
--- dumped by pg_dump version 14.12 (ubuntu 14.12-1.pgdg22.04+1)
-
-set statement_timeout = 0;
-set lock_timeout = 0;
-set idle_in_transaction_session_timeout = 0;
-set client_encoding = 'utf8';
-set standard_conforming_strings = on;
-select pg_catalog.set_config('search_path', '', false);
-set check_function_bodies = false;
-set xmloption = content;
-set client_min_messages = warning;
-set row_security = off;
-
---
--- postgresql database dump complete
---
-
diff --git a/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/public session_connection_state_enm.sql b/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/public session_connection_state_enm.sql
deleted file mode 100644
index 267d87acc..000000000
--- a/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/public session_connection_state_enm.sql	
+++ /dev/null
@@ -1,22 +0,0 @@
---
--- postgresql database dump
---
-
--- dumped from database version 13.15
--- dumped by pg_dump version 14.12 (ubuntu 14.12-1.pgdg22.04+1)
-
-set statement_timeout = 0;
-set lock_timeout = 0;
-set idle_in_transaction_session_timeout = 0;
-set client_encoding = 'utf8';
-set standard_conforming_strings = on;
-select pg_catalog.set_config('search_path', '', false);
-set check_function_bodies = false;
-set xmloption = content;
-set client_min_messages = warning;
-set row_security = off;
-
---
--- postgresql database dump complete
---
-
diff --git a/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection.sql b/.schema-diff/tables_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection.sql
index 4fa262e61..8c9fe5bda 100644
--- a/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection.sql
+++ b/.schema-diff/tables_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection.sql
@@ -39,6 +39,7 @@ create table public.session_connection (
     update_time public.wt_timestamp,
     user_client_ip inet,
     worker_id public.wt_public_id,
+    connected_time_range tstzrange,
     constraint bytes_down_must_be_null_or_a_non_negative_number check (((bytes_down is null) or (bytes_down >= 0))),
     constraint bytes_up_must_be_null_or_a_non_negative_number check (((bytes_up is null) or (bytes_up >= 0))),
     constraint client_tcp_port_must_be_greater_than_0 check ((client_tcp_port > 0)),
diff --git a/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state.sql b/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state.sql
deleted file mode 100644
index 77da8eba7..000000000
--- a/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state.sql
+++ /dev/null
@@ -1,42 +0,0 @@
---
--- postgresql database dump
---
-
--- dumped from database version 13.15
--- dumped by pg_dump version 14.12 (ubuntu 14.12-1.pgdg22.04+1)
-
-set statement_timeout = 0;
-set lock_timeout = 0;
-set idle_in_transaction_session_timeout = 0;
-set client_encoding = 'utf8';
-set standard_conforming_strings = on;
-select pg_catalog.set_config('search_path', '', false);
-set check_function_bodies = false;
-set xmloption = content;
-set client_min_messages = warning;
-set row_security = off;
-
-set default_tablespace = '';
-
-set default_table_access_method = heap;
-
---
--- name: session_connection_state; type: table; schema: public; owner: -
---
-
-create table public.session_connection_state (
-    connection_id public.wt_public_id not null,
-    state text not null,
-    previous_end_time timestamp with time zone,
-    start_time timestamp with time zone default current_timestamp not null,
-    end_time timestamp with time zone,
-    constraint end_times_in_sequence check ((previous_end_time <> end_time)),
-    constraint previous_end_time_and_start_time_in_sequence check ((previous_end_time <= start_time)),
-    constraint start_and_end_times_in_sequence check ((start_time <= end_time))
-);
-
-
---
--- postgresql database dump complete
---
-
diff --git a/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_enm.sql b/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_enm.sql
deleted file mode 100644
index 3821fb56b..000000000
--- a/.schema-diff/tables_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_enm.sql
+++ /dev/null
@@ -1,36 +0,0 @@
---
--- postgresql database dump
---
-
--- dumped from database version 13.15
--- dumped by pg_dump version 14.12 (ubuntu 14.12-1.pgdg22.04+1)
-
-set statement_timeout = 0;
-set lock_timeout = 0;
-set idle_in_transaction_session_timeout = 0;
-set client_encoding = 'utf8';
-set standard_conforming_strings = on;
-select pg_catalog.set_config('search_path', '', false);
-set check_function_bodies = false;
-set xmloption = content;
-set client_min_messages = warning;
-set row_security = off;
-
-set default_tablespace = '';
-
-set default_table_access_method = heap;
-
---
--- name: session_connection_state_enm; type: table; schema: public; owner: -
---
-
-create table public.session_connection_state_enm (
-    name text not null,
-    constraint only_predefined_session_connection_states_allowed check ((name = any (array['authorized'::text, 'connected'::text, 'closed'::text])))
-);
-
-
---
--- postgresql database dump complete
---
-

Views

diff --git a/.schema-diff/views_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection_with_status_view.sql b/.schema-diff/views_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection_with_status_view.sql
new file mode 100644
index 000000000..719c23a45
--- /dev/null
+++ b/.schema-diff/views_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection_with_status_view.sql
@@ -0,0 +1,49 @@
+--
+-- postgresql database dump
+--
+
+-- dumped from database version 13.15
+-- dumped by pg_dump version 14.12 (ubuntu 14.12-1.pgdg22.04+1)
+
+set statement_timeout = 0;
+set lock_timeout = 0;
+set idle_in_transaction_session_timeout = 0;
+set client_encoding = 'utf8';
+set standard_conforming_strings = on;
+select pg_catalog.set_config('search_path', '', false);
+set check_function_bodies = false;
+set xmloption = content;
+set client_min_messages = warning;
+set row_security = off;
+
+--
+-- name: session_connection_with_status_view; type: view; schema: public; owner: -
+--
+
+create view public.session_connection_with_status_view as
+ select session_connection.public_id,
+    session_connection.session_id,
+    session_connection.client_tcp_address,
+    session_connection.client_tcp_port,
+    session_connection.endpoint_tcp_address,
+    session_connection.endpoint_tcp_port,
+    session_connection.bytes_up,
+    session_connection.bytes_down,
+    session_connection.closed_reason,
+    session_connection.version,
+    session_connection.create_time,
+    session_connection.update_time,
+    session_connection.user_client_ip,
+    session_connection.worker_id,
+        case
+            when (session_connection.connected_time_range is null) then 'authorized'::text
+            when (upper(session_connection.connected_time_range) > now()) then 'connected'::text
+            else 'closed'::text
+        end as status
+   from public.session_connection;
+
+
+--
+-- postgresql database dump complete
+--
+

Triggers

diff --git a/.schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection insert_new_connection_state.sql b/.schema-diff/triggers_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection check_connection_state_transition.sql
similarity index 64%
rename from .schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection insert_new_connection_state.sql
rename to .schema-diff/triggers_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection check_connection_state_transition.sql
index b419a571d..d04aaa87c 100644
--- a/.schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection insert_new_connection_state.sql	
+++ b/.schema-diff/triggers_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection check_connection_state_transition.sql	
@@ -17,10 +17,10 @@ set client_min_messages = warning;
 set row_security = off;
 
 --
--- name: session_connection insert_new_connection_state; type: trigger; schema: public; owner: -
+-- name: session_connection check_connection_state_transition; type: trigger; schema: public; owner: -
 --
 
-create trigger insert_new_connection_state after insert on public.session_connection for each row execute function public.insert_new_connection_state();
+create trigger check_connection_state_transition before update of connected_time_range on public.session_connection for each row execute function public.check_connection_state_transition();
 
 
 --
diff --git a/.schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection update_connection_state_on_closed_reason.sql b/.schema-diff/triggers_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection update_connected_time_range_closed_reason.sql
similarity index 62%
rename from .schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection update_connection_state_on_closed_reason.sql
rename to .schema-diff/triggers_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection update_connected_time_range_closed_reason.sql
index d6b961a23..684ab2326 100644
--- a/.schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection update_connection_state_on_closed_reason.sql	
+++ b/.schema-diff/triggers_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection update_connected_time_range_closed_reason.sql	
@@ -17,10 +17,10 @@ set client_min_messages = warning;
 set row_security = off;
 
 --
--- name: session_connection update_connection_state_on_closed_reason; type: trigger; schema: public; owner: -
+-- name: session_connection update_connected_time_range_closed_reason; type: trigger; schema: public; owner: -
 --
 
-create trigger update_connection_state_on_closed_reason after update of closed_reason on public.session_connection for each row execute function public.update_connection_state_on_closed_reason();
+create trigger update_connected_time_range_closed_reason before update of closed_reason on public.session_connection for each row execute function public.update_connected_time_range_on_closed_reason();
 
 
 --
diff --git a/.schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state wh_insert_session_connection_state.sql b/.schema-diff/triggers_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection wh_insert_session_connection_state.sql
similarity index 64%
rename from .schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state wh_insert_session_connection_state.sql
rename to .schema-diff/triggers_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection wh_insert_session_connection_state.sql
index 346694078..19b1be247 100644
--- a/.schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state wh_insert_session_connection_state.sql	
+++ b/.schema-diff/triggers_477519b0ecd46d23d27aa6774519e4be4ca548ae/session_connection wh_insert_session_connection_state.sql	
@@ -17,10 +17,10 @@ set client_min_messages = warning;
 set row_security = off;
 
 --
--- name: session_connection_state wh_insert_session_connection_state; type: trigger; schema: public; owner: -
+-- name: session_connection wh_insert_session_connection_state; type: trigger; schema: public; owner: -
 --
 
-create trigger wh_insert_session_connection_state after insert on public.session_connection_state for each row execute function public.wh_insert_session_connection_state();
+create trigger wh_insert_session_connection_state after update of connected_time_range on public.session_connection for each row execute function public.wh_insert_session_connection_state();
 
 
 --
diff --git a/.schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state immutable_columns.sql b/.schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state immutable_columns.sql
deleted file mode 100644
index c8546492b..000000000
--- a/.schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state immutable_columns.sql	
+++ /dev/null
@@ -1,29 +0,0 @@
---
--- postgresql database dump
---
-
--- dumped from database version 13.15
--- dumped by pg_dump version 14.12 (ubuntu 14.12-1.pgdg22.04+1)
-
-set statement_timeout = 0;
-set lock_timeout = 0;
-set idle_in_transaction_session_timeout = 0;
-set client_encoding = 'utf8';
-set standard_conforming_strings = on;
-select pg_catalog.set_config('search_path', '', false);
-set check_function_bodies = false;
-set xmloption = content;
-set client_min_messages = warning;
-set row_security = off;
-
---
--- name: session_connection_state immutable_columns; type: trigger; schema: public; owner: -
---
-
-create trigger immutable_columns before update on public.session_connection_state for each row execute function public.immutable_columns('connection_id', 'state', 'start_time', 'previous_end_time');
-
-
---
--- postgresql database dump complete
---
-
diff --git a/.schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state insert_session_connection_state.sql b/.schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state insert_session_connection_state.sql
deleted file mode 100644
index 392218f31..000000000
--- a/.schema-diff/triggers_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state insert_session_connection_state.sql	
+++ /dev/null
@@ -1,29 +0,0 @@
---
--- postgresql database dump
---
-
--- dumped from database version 13.15
--- dumped by pg_dump version 14.12 (ubuntu 14.12-1.pgdg22.04+1)
-
-set statement_timeout = 0;
-set lock_timeout = 0;
-set idle_in_transaction_session_timeout = 0;
-set client_encoding = 'utf8';
-set standard_conforming_strings = on;
-select pg_catalog.set_config('search_path', '', false);
-set check_function_bodies = false;
-set xmloption = content;
-set client_min_messages = warning;
-set row_security = off;
-
---
--- name: session_connection_state insert_session_connection_state; type: trigger; schema: public; owner: -
---
-
-create trigger insert_session_connection_state before insert on public.session_connection_state for each row execute function public.insert_session_connection_state();
-
-
---
--- postgresql database dump complete
---
-

Indexes

diff --git a/.schema-diff/indexes_477519b0ecd46d23d27aa6774519e4be4ca548ae/connected_time_range_idx.sql b/.schema-diff/indexes_477519b0ecd46d23d27aa6774519e4be4ca548ae/connected_time_range_idx.sql
new file mode 100644
index 000000000..66f077ff7
--- /dev/null
+++ b/.schema-diff/indexes_477519b0ecd46d23d27aa6774519e4be4ca548ae/connected_time_range_idx.sql
@@ -0,0 +1,31 @@
+--
+-- postgresql database dump
+--
+
+-- dumped from database version 13.15
+-- dumped by pg_dump version 14.12 (ubuntu 14.12-1.pgdg22.04+1)
+
+set statement_timeout = 0;
+set lock_timeout = 0;
+set idle_in_transaction_session_timeout = 0;
+set client_encoding = 'utf8';
+set standard_conforming_strings = on;
+select pg_catalog.set_config('search_path', '', false);
+set check_function_bodies = false;
+set xmloption = content;
+set client_min_messages = warning;
+set row_security = off;
+
+set default_tablespace = '';
+
+--
+-- name: connected_time_range_idx; type: index; schema: public; owner: -
+--
+
+create index connected_time_range_idx on public.session_connection using btree (connected_time_range);
+
+
+--
+-- postgresql database dump complete
+--
+
diff --git a/.schema-diff/indexes_477519b0ecd46d23d27aa6774519e4be4ca548ae/connected_time_range_upper_idx.sql b/.schema-diff/indexes_477519b0ecd46d23d27aa6774519e4be4ca548ae/connected_time_range_upper_idx.sql
new file mode 100644
index 000000000..928422166
--- /dev/null
+++ b/.schema-diff/indexes_477519b0ecd46d23d27aa6774519e4be4ca548ae/connected_time_range_upper_idx.sql
@@ -0,0 +1,31 @@
+--
+-- postgresql database dump
+--
+
+-- dumped from database version 13.15
+-- dumped by pg_dump version 14.12 (ubuntu 14.12-1.pgdg22.04+1)
+
+set statement_timeout = 0;
+set lock_timeout = 0;
+set idle_in_transaction_session_timeout = 0;
+set client_encoding = 'utf8';
+set standard_conforming_strings = on;
+select pg_catalog.set_config('search_path', '', false);
+set check_function_bodies = false;
+set xmloption = content;
+set client_min_messages = warning;
+set row_security = off;
+
+set default_tablespace = '';
+
+--
+-- name: connected_time_range_upper_idx; type: index; schema: public; owner: -
+--
+
+create index connected_time_range_upper_idx on public.session_connection using btree (upper(connected_time_range));
+
+
+--
+-- postgresql database dump complete
+--
+

Constraints

diff --git a/.schema-diff/constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_connection_id_end_time_uq.sql b/.schema-diff/constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_connection_id_end_time_uq.sql
deleted file mode 100644
index 144fc4c80..000000000
--- a/.schema-diff/constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_connection_id_end_time_uq.sql
+++ /dev/null
@@ -1,2 +0,0 @@
--- name: session_connection_state session_connection_state_connection_id_end_time_uq; type: constraint; schema: public; owner: -
-    add constraint session_connection_state_connection_id_end_time_uq unique (connection_id, end_time);
diff --git a/.schema-diff/constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_connection_id_previous_end_time_uq.sql b/.schema-diff/constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_connection_id_previous_end_time_uq.sql
deleted file mode 100644
index bc22838ee..000000000
--- a/.schema-diff/constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_connection_id_previous_end_time_uq.sql
+++ /dev/null
@@ -1,2 +0,0 @@
--- name: session_connection_state session_connection_state_connection_id_previous_end_time_uq; type: constraint; schema: public; owner: -
-    add constraint session_connection_state_connection_id_previous_end_time_uq unique (connection_id, previous_end_time);
diff --git a/.schema-diff/constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_enm_pkey.sql b/.schema-diff/constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_enm_pkey.sql
deleted file mode 100644
index 969d9a67c..000000000
--- a/.schema-diff/constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_enm_pkey.sql
+++ /dev/null
@@ -1,2 +0,0 @@
--- name: session_connection_state_enm session_connection_state_enm_pkey; type: constraint; schema: public; owner: -
-    add constraint session_connection_state_enm_pkey primary key (name);
diff --git a/.schema-diff/constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_pkey.sql b/.schema-diff/constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_pkey.sql
deleted file mode 100644
index 7e3c2d4e5..000000000
--- a/.schema-diff/constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_pkey.sql
+++ /dev/null
@@ -1,2 +0,0 @@
--- name: session_connection_state session_connection_state_pkey; type: constraint; schema: public; owner: -
-    add constraint session_connection_state_pkey primary key (connection_id, start_time);

Foreign Key Constraints

diff --git a/.schema-diff/fk_constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_connection_id_fkey.sql b/.schema-diff/fk_constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_connection_id_fkey.sql
deleted file mode 100644
index cf978ee15..000000000
--- a/.schema-diff/fk_constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_connection_id_fkey.sql
+++ /dev/null
@@ -1,2 +0,0 @@
--- name: session_connection_state session_connection_state_connection_id_fkey; type: fk constraint; schema: public; owner: -
-    add constraint session_connection_state_connection_id_fkey foreign key (connection_id) references public.session_connection(public_id) on update cascade on delete cascade;
diff --git a/.schema-diff/fk_constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_connection_id_previous_end_time_fkey.sql b/.schema-diff/fk_constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_connection_id_previous_end_time_fkey.sql
deleted file mode 100644
index 3ba011432..000000000
--- a/.schema-diff/fk_constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_connection_id_previous_end_time_fkey.sql
+++ /dev/null
@@ -1,2 +0,0 @@
--- name: session_connection_state session_connection_state_connection_id_previous_end_time_fkey; type: fk constraint; schema: public; owner: -
-    add constraint session_connection_state_connection_id_previous_end_time_fkey foreign key (connection_id, previous_end_time) references public.session_connection_state(connection_id, end_time);
diff --git a/.schema-diff/fk_constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_enm_state_fkey.sql b/.schema-diff/fk_constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_enm_state_fkey.sql
deleted file mode 100644
index ab6be27b9..000000000
--- a/.schema-diff/fk_constraints_85f98a4a678cb56286a5862c2fb76d34abbb12cc/session_connection_state_enm_state_fkey.sql
+++ /dev/null
@@ -1,2 +0,0 @@
--- name: session_connection_state session_connection_state_enm_state_fkey; type: fk constraint; schema: public; owner: -
-    add constraint session_connection_state_enm_state_fkey foreign key (state) references public.session_connection_state_enm(name) on update cascade on delete restrict;