How to debug plpgsql with pgAdminIII
[[email protected] soft_bak]# git clone git://git.postgresql.org/git/pldebugger.git
Initialized empty Git repository in /opt/soft_bak/pldebugger/.git/
remote: Counting objects: 445, done.
remote: Compressing objects: 100% (341/341), done.
remote: Total 445 (delta 285), reused 171 (delta 104)
Receiving objects: 100% (445/445), 170.50 KiB | 54 KiB/s, done.
Resolving deltas: 100% (285/285), done.
[[email protected] soft_bak]# cd pldebugger/
[[email protected] pldebugger]# ls
dbgcomm.c Makefile pldbgapi.control pldebugger.proj plugin_debugger.def uninstall_pldbgapi.sql
dbgcomm.h pldbgapi--1.0.sql pldbgapi--unpackaged--1.0.sql plpgsql_debugger.c README.pldebugger
globalbp.h pldbgapi.c pldebugger.h plugin_debugger.c settings.projinc
[[email protected] soft_bak]# cd postgresql-9.4.5/contrib/
[[email protected] contrib]# cp -R /opt/soft_bak/pldebugger/ ./
[[email protected] contrib]# cd pldebugger/
[[email protected] pldebugger]# make
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -O2 -fpic -I../../src/pl/plpgsql/src -I. -I. -I../../src/include -D_GNU_SOURCE -c -o plpgsql_debugger.o plpgsql_debugger.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -O2 -fpic -I. -I. -I../../src/include -D_GNU_SOURCE -c -o plugin_debugger.o plugin_debugger.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -O2 -fpic -I. -I. -I../../src/include -D_GNU_SOURCE -c -o dbgcomm.o dbgcomm.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -O2 -fpic -I. -I. -I../../src/include -D_GNU_SOURCE -c -o pldbgapi.o pldbgapi.c
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -O2 -fpic -shared -o plugin_debugger.so plpgsql_debugger.o plugin_debugger.o dbgcomm.o pldbgapi.o -L../../src/port -L../../src/common -Wl,--as-needed -Wl,-rpath,‘/ext4/pgdefaultgcc530/lib‘,--enable-new-dtags
[[email protected] pldebugger]# make install
/bin/mkdir -p ‘/ext4/pgdefaultgcc530/lib/postgresql‘
/bin/mkdir -p ‘/ext4/pgdefaultgcc530/share/postgresql/extension‘
/bin/mkdir -p ‘/ext4/pgdefaultgcc530/share/postgresql/extension‘
/bin/mkdir -p ‘/ext4/pgdefaultgcc530/share/doc//postgresql/extension‘
/usr/bin/install -c -m 755 plugin_debugger.so ‘/ext4/pgdefaultgcc530/lib/postgresql/plugin_debugger.so‘
/usr/bin/install -c -m 644 pldbgapi.control ‘/ext4/pgdefaultgcc530/share/postgresql/extension/‘
/usr/bin/install -c -m 644 pldbgapi--1.0.sql pldbgapi--unpackaged--1.0.sql ‘/ext4/pgdefaultgcc530/share/postgresql/extension/‘
/usr/bin/install -c -m 644 README.pldebugger ‘/ext4/pgdefaultgcc530/share/doc//postgresql/extension/‘
[[email protected] ~]# vim /ext4/pgdefaultgcc530/data/postgresql.conf
shared_preload_libraries = ‘$libdir/plugin_debugger‘
[[email protected] ~]# su - postgres
[[email protected] ~]$ cd /ext4/pgdefaultgcc530/bin/
[[email protected] bin]$ ./pg_ctl -D /ext4/pgdefaultgcc530/data/ restart
waiting for server to shut down.... done
server stopped
server starting
[[email protected] bin]$ LOG: redirecting log output to logging collector process
HINT: Future log output will appear in directory "pg_log".
[[email protected] bin]$ ./psql -h localhost -U postgres
psql (9.4.5)
Type "help" for help.
postgres=# CREATE EXTENSION pldbgapi;
CREATE EXTENSION
postgres=# CREATE TABLE accounts(owner text, balance numeric, amount numeric);
CREATE TABLE
postgres=# INSERT INTO accounts VALUES (‘Bob‘,100);
INSERT 0 1
postgres=# INSERT INTO accounts VALUES (‘Mary‘,200);
INSERT 0 1
postgres=# select * from accounts ;
owner | balance | amount
-------+---------+--------
Bob | 100 |
Mary | 200 |
(2 rows)
postgres=# CREATE OR REPLACE FUNCTION transfer(
postgres(# i_payer text,
postgres(# i_recipient text,
postgres(# i_amount numeric(15,2))
postgres-# RETURNS text
postgres-# AS
postgres-# $$
postgres$# DECLARE
postgres$# payer_bal numeric;
postgres$# BEGIN
postgres$# SELECT balance INTO payer_bal
postgres$# FROM accounts
postgres$# WHERE owner = i_payer FOR UPDATE;
postgres$# IF NOT FOUND THEN
postgres$# RETURN ‘Payer account not found‘;
postgres$# END IF;
postgres$# IF payer_bal < i_amount THEN
postgres$# RETURN ‘Not enough funds‘;
postgres$# END IF;
postgres$# UPDATE accounts
postgres$# SET balance = balance + i_amount
postgres$# WHERE owner = i_recipient;
postgres$# IF NOT FOUND THEN
postgres$# RETURN ‘Recipient does not exist‘;
postgres$# END IF;
postgres$# UPDATE accounts
postgres$# SET balance = balance - i_amount
postgres$# WHERE owner = i_payer;
postgres$# RETURN ‘OK‘;
postgres$# END;
postgres$# $$ LANGUAGE plpgsql;
CREATE FUNCTION
postgres=# \df
List of functions
Schema | Name | Result data type | Argument data types | Type
--------+-----------------------------+------------------+------------------------------------------------------------------+--------
public | pldbg_abort_target | SETOF boolean | session integer | normal
public | pldbg_attach_to_port | integer | portnumber integer | normal
public | pldbg_continue | breakpoint | session integer | normal
public | pldbg_create_listener | integer | | normal
public | pldbg_deposit_value | boolean | session integer, varname text, linenumber integer, value text | normal
public | pldbg_drop_breakpoint | boolean | session integer, func oid, linenumber integer | normal
public | pldbg_get_breakpoints | SETOF breakpoint | session integer | normal
public | pldbg_get_proxy_info | proxyinfo | | normal
public | pldbg_get_source | text | session integer, func oid | normal
public | pldbg_get_stack | SETOF frame | session integer | normal
public | pldbg_get_target_info | targetinfo | signature text, targettype "char" | normal
public | pldbg_get_variables | SETOF var | session integer | normal
public | pldbg_oid_debug | integer | functionoid oid | normal
public | pldbg_select_frame | breakpoint | session integer, frame integer | normal
public | pldbg_set_breakpoint | boolean | session integer, func oid, linenumber integer | normal
public | pldbg_set_global_breakpoint | boolean | session integer, func oid, linenumber integer, targetpid integer | normal
public | pldbg_step_into | breakpoint | session integer | normal
public | pldbg_step_over | breakpoint | session integer | normal
public | pldbg_wait_for_breakpoint | breakpoint | session integer | normal
public | pldbg_wait_for_target | integer | session integer | normal
public | plpgsql_oid_debug | integer | functionoid oid | normal
public | transfer | text | i_payer text, i_recipient text, i_amount numeric | normal
(22 rows)
Connect to PostgreSQL Server with pgAdminIII
Find to postgreSQL function to be debuged transfer
Right click the transfer function and Input the parameter to be test
