Lub zog rau kev sau cov duab kos no yog kab lus . Kuv kuj pom cov ntawv luam tawm 4 xyoo dhau los nthuav dav - .
Nws zoo nkaus li nthuav tias tib txoj kev xav - "siv kev lag luam logic hauv database".
Nws tsis yog kuv xwb uas tau los rau hauv siab.
Tsis tas li ntawd, rau yav tom ntej, kuv xav khaws cia, ua ntej ntawm tag nrho cov, rau kuv tus kheej, nthuav kev txhim kho uas tshwm sim thaum lub sij hawm siv. Tshwj xeeb tshaj yog xav tias tsis ntev los no ib qho kev txiav txim siab tau tsim los hloov cov qauv tsim thiab hloov kev lag luam logic mus rau qib backend. Yog li ntawd txhua yam uas tau tsim los sai sai yuav tsis muaj txiaj ntsig rau leej twg thiab yuav tsis muaj txiaj ntsig rau leej twg.
Cov kev piav qhia tsis yog qee yam kev tshawb pom lossis tshwj xeeb. paub li cas, txhua yam yog classic thiab tau siv ntau zaus (piv txwv li, kuv tau siv txoj hauv kev zoo sib xws 20 xyoo dhau los ntawm Oracle). Yog hais tias nws los nyob rau hauv ke rau ib tug neeg. Raws li kev xyaum qhia, feem ntau tib lub tswv yim los rau cov neeg sib txawv ntawm nws tus kheej. Thiab nws tseem ceeb heev kom khaws nws rau koj tus kheej ua khoom plig.
Tau kawg, tsis muaj dab tsi hauv ntiaj teb no zoo tag nrho, kev ua yuam kev thiab typos yog hmoov tsis tau. Kev thuam thiab cov lus pom zoo txais tos thiab xav tau.Thiab ib qho ntxiv me me - cov ntsiab lus tshwj xeeb siv tau raug tshem tawm. Txawm li cas los xij, txhua yam tseem siv tau rau hauv kev ua haujlwm tiag tiag. Yog li, tsab xov xwm tsuas yog kos duab thiab piav qhia ntawm lub tswv yim dav dav, tsis muaj dab tsi ntxiv. Kuv vam tias muaj cov ntsiab lus txaus kom nkag siab txog tag nrho cov duab.
Lub tswv yim dav dav yog "sib faib thiab kov yeej, nkaum thiab muaj tus kheej"
Lub tswv yim yog classic - cais schema rau cov ntxhuav, cais schema rau khaws cia ua haujlwm.
Tus neeg siv khoom tsis muaj kev nkag mus rau cov ntaub ntawv ncaj qha. Txhua tus neeg siv khoom tuaj yeem ua tau yog hu rau lub luag haujlwm khaws cia thiab ua cov lus teb tau txais.
Cov luag hauj lwm
CREATE ROLE store;
CREATE ROLE sys_functions;
CREATE ROLE loc_audit_functions;
CREATE ROLE service_functions;
CREATE ROLE business_functions;
Π ΠΠ‘ ... Π Β΅Π ΡΠ‘ βΉ!
Table cia tswv yim
Lub hom phiaj cov rooj uas siv cov ntsiab lus.
CREATE SCHEMA store AUTHORIZATION store ;
Daim duab qhia kev ua haujlwm
Qhov system ua haujlwm, tshwj xeeb tshaj yog rau kev hloov pauv lub rooj.
CREATE SCHEMA sys_functions AUTHORIZATION sys_functions ;
Local audit scheme
Kev ua haujlwm thiab cov rooj siv los siv kev tshuaj xyuas hauv zos ntawm kev ua tiav cov haujlwm khaws cia thiab hloov pauv rau lub hom phiaj cov rooj.
CREATE SCHEMA loc_audit_functions AUTHORIZATION loc_audit_functions;
Daim duab qhia kev ua haujlwm
Muaj nuj nqi rau kev pabcuam thiab DML ua haujlwm.
CREATE SCHEMA service_functions AUTHORIZATION service_functions;
Daim duab ua lag luam ua haujlwm
Muaj nuj nqi rau kev ua lag luam zaum kawg hu ua tus neeg siv khoom.
CREATE SCHEMA business_functions AUTHORIZATION business_functions;
Cov cai nkag
Lub luag haujlwm - DBA muaj kev nkag mus rau tag nrho cov schemas (sib cais los ntawm DB Owner luag hauj lwm).
CREATE ROLE dba_role;
GRANT store TO dba_role;
GRANT sys_functions TO dba_role;
GRANT loc_audit_functions TO dba_role;
GRANT service_functions TO dba_role;
GRANT business_functions TO dba_role;
Lub luag haujlwm - SIV muaj cai LAWJ XEEB hauv daim duab business_functions.
CREATE ROLE user_role;
Muaj cai ntawm schemes
GRANT
Txij li tag nrho cov haujlwm tau tsim nrog tus cwj pwm SECURITY DEFINIER cov lus qhia xav tau REVOKE EXECUTE RAU ββTXHUA HNUB... Los ntawm pej xeem;
REVOKE EXECUTE ON ALL FUNCTION IN SCHEMA sys_functions FROM public ;
REVOKE EXECUTE ON ALL FUNCTION IN SCHEMA loc_audit_functions FROM public ;
REVOKE EXECUTE ON ALL FUNCTION IN SCHEMA service_functions FROM public ;
REVOKE EXECUTE ON ALL FUNCTION IN SCHEMA business_functions FROM public ;
GRANT USAGE ON SCHEMA sys_functions TO dba_role ;
GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA sys_functions TO dba_role ;
GRANT USAGE ON SCHEMA loc_audit_functions TO dba_role ;
GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA loc_audit_functions TO dba_role ;
GRANT USAGE ON SCHEMA service_functions TO dba_role ;
GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA service_functions TO dba_role ;
GRANT USAGE ON SCHEMA business_functions TO dba_role ;
GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA business_functions TO dba_role ;
GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA business_functions TO user_role ;
GRANT ALL PRIVILEGES ON SCHEMA store TO GROUP business_functions ;
GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA store TO business_functions ;
GRANT USAGE ON ALL SEQUENCES IN SCHEMA store TO business_functions ;
Yog li lub database schema yog npaj txhij. Koj tuaj yeem pib sau cov ntaub ntawv.
Cov rooj sib tham
Tsim cov rooj yog qhov tsis tseem ceeb. Tsis muaj qhov tshwj xeeb, tshwj tsis yog tias nws tau txiav txim siab tsis siv HLUB thiab tsim cov sequence kom meej meej. Ntxiv rau, tau kawg, qhov siab tshaj plaws siv cov lus qhia
COMMENT ON ...Comments rau ntawm txhua tus cov khoom, tsis muaj kev zam.
Kev soj ntsuam hauv zos
Txhawm rau txhawm rau ua tiav cov haujlwm khaws cia thiab kev hloov pauv rau lub hom phiaj cov rooj, lub rooj tshuaj xyuas hauv zos yog siv, uas suav nrog, ntawm lwm yam, cov ntsiab lus ntawm cov neeg siv khoom sib txuas, daim ntawv lo ntawm lub npe hu ua module, thiab cov txiaj ntsig tiag tiag ntawm cov tswv yim thiab tso zis tsis nyob rau hauv daim ntawv ntawm JSON.
System ua haujlwm
Tsim los rau kev hloov pauv hauv cov phiaj xwm. Lawv yog cov ua haujlwm ua haujlwm.
Template - system muaj nuj nqi
---------------------------------------------------------
-- INSERT
CREATE OR REPLACE FUNCTION sys_functions.table_insert_log ()
RETURNS TRIGGER AS $$
BEGIN
PERFORM loc_audit_functions.make_log( ' '||'table' , 'insert' , json_build_object('id', NEW.id) );
RETURN NULL ;
END
$$ LANGUAGE plpgsql SECURITY DEFINER;
CREATE TRIGGER table_after_insert AFTER INSERT ON storage.table FOR EACH ROW EXECUTE PROCEDURE sys_functions.table_insert_log();
---------------------------------------------------------
-- UPDATE
CREATE OR REPLACE FUNCTION sys_functions.table_update_log ()
RETURNS TRIGGER AS $$
BEGIN
IF OLD.column != NEW.column
THEN
PERFORM loc_audit_functions.make_log( ' '||'table' , 'update' , json_build_object('OLD.column', OLD.column , 'NEW.column' , NEW.column ) );
END IF ;
RETURN NULL ;
END
$$ LANGUAGE plpgsql SECURITY DEFINER;
CREATE TRIGGER table_after_update AFTER UPDATE ON storage.table FOR EACH ROW EXECUTE PROCEDURE sys_functions.table_update_log ();
---------------------------------------------------------
-- DELETE
CREATE OR REPLACE FUNCTION sys_functions.table_delete_log ()
RETURNS TRIGGER AS $$
BEGIN
PERFORM loc_audit_functions.make_log( ' '||'table' , 'delete' , json_build_object('id', OLD.id ) );
RETURN NULL ;
END
$$ LANGUAGE plpgsql SECURITY DEFINER;
CREATE TRIGGER table_after_delete AFTER DELETE ON storage.table FOR EACH ROW EXECUTE PROCEDURE sys_functions.table_delete_log ();Cov haujlwm pabcuam
Tsim los siv cov kev pabcuam thiab kev ua haujlwm DML ntawm lub rooj sib tham.
Template - kev pabcuam ua haujlwm
--INSERT
--RETURN id OF NEW ROW
CREATE OR REPLACE FUNCTION service_functions.table_insert ( new_column store.table.column%TYPE )
RETURNS integer AS $$
DECLARE
new_id integer ;
BEGIN
-- Generate new id
new_id = nextval('store.table.seq');
-- Insert into table
INSERT INTO store.table
(
id ,
column
)
VALUES
(
new_id ,
new_column
);
RETURN new_id ;
END
$$ LANGUAGE plpgsql SECURITY DEFINER;
--DELETE
--RETURN ROW NUMBERS DELETED
CREATE OR REPLACE FUNCTION service_functions.table_delete ( current_id integer )
RETURNS integer AS $$
DECLARE
rows_count integer ;
BEGIN
DELETE FROM store.table WHERE id = current_id;
GET DIAGNOSTICS rows_count = ROW_COUNT;
RETURN rows_count ;
END
$$ LANGUAGE plpgsql SECURITY DEFINER;
-- UPDATE DETAILS
-- RETURN ROW NUMBERS UPDATED
CREATE OR REPLACE FUNCTION service_functions.table_update_column
(
current_id integer
,new_column store.table.column%TYPE
)
RETURNS integer AS $$
DECLARE
rows_count integer ;
BEGIN
UPDATE store.table
SET
column = new_column
WHERE id = current_id;
GET DIAGNOSTICS rows_count = ROW_COUNT;
RETURN rows_count ;
END
$$ LANGUAGE plpgsql SECURITY DEFINER;Kev lag luam muaj nuj nqi
Tsim los rau kev ua lag luam zaum kawg hu ua tus neeg siv khoom. Lawv ib txwm rov qab los - JSON. Txhawm rau cuam tshuam thiab kaw qhov yuam kev, siv qhov thaiv KEV NTSEEG.
Template - kev ua lag luam
CREATE OR REPLACE FUNCTION business_functions.business_function_template(
--Input parameters
)
RETURNS JSON AS $$
DECLARE
------------------------
--for exception catching
error_message text ;
error_json json ;
result json ;
------------------------
BEGIN
--LOGGING
PERFORM loc_audit_functions.make_log
(
'business_function_template',
'STARTED',
json_build_object
(
--IN Parameters
)
);
PERFORM business_functions.notice('business_function_template');
--START BUSINESS PART
--END BUSINESS PART
-- SUCCESFULLY RESULT
PERFORM business_functions.notice('result');
PERFORM business_functions.notice(result);
PERFORM loc_audit_functions.make_log
(
'business_function_template',
'FINISHED',
json_build_object( 'result',result )
);
RETURN result ;
----------------------------------------------------------------------------------------------------------
-- EXCEPTION CATCHING
EXCEPTION
WHEN OTHERS THEN
PERFORM loc_audit_functions.make_log
(
'business_function_template',
'STARTED',
json_build_object
(
--IN Parameters
) , TRUE );
PERFORM loc_audit_functions.make_log
(
'business_function_template',
' ERROR',
json_build_object('SQLSTATE',SQLSTATE ), TRUE
);
PERFORM loc_audit_functions.make_log
(
'business_function_template',
' ERROR',
json_build_object('SQLERRM',SQLERRM ), TRUE
);
GET STACKED DIAGNOSTICS error_message = RETURNED_SQLSTATE ;
PERFORM loc_audit_functions.make_log
(
'business_function_template',
' ERROR-RETURNED_SQLSTATE',json_build_object('RETURNED_SQLSTATE',error_message ), TRUE );
GET STACKED DIAGNOSTICS error_message = COLUMN_NAME ;
PERFORM loc_audit_functions.make_log
(
'business_function_template',
' ERROR-COLUMN_NAME',
json_build_object('COLUMN_NAME',error_message ), TRUE );
GET STACKED DIAGNOSTICS error_message = CONSTRAINT_NAME ;
PERFORM loc_audit_functions.make_log
(
'business_function_template',
' ERROR-CONSTRAINT_NAME',
json_build_object('CONSTRAINT_NAME',error_message ), TRUE );
GET STACKED DIAGNOSTICS error_message = PG_DATATYPE_NAME ;
PERFORM loc_audit_functions.make_log
(
'business_function_template',
' ERROR-PG_DATATYPE_NAME',
json_build_object('PG_DATATYPE_NAME',error_message ), TRUE );
GET STACKED DIAGNOSTICS error_message = MESSAGE_TEXT ;
PERFORM loc_audit_functions.make_log
(
'business_function_template',
' ERROR-MESSAGE_TEXT',json_build_object('MESSAGE_TEXT',error_message ), TRUE );
GET STACKED DIAGNOSTICS error_message = SCHEMA_NAME ;
PERFORM loc_audit_functions.make_log
(s
'business_function_template',
' ERROR-SCHEMA_NAME',json_build_object('SCHEMA_NAME',error_message ), TRUE );
GET STACKED DIAGNOSTICS error_message = PG_EXCEPTION_DETAIL ;
PERFORM loc_audit_functions.make_log
(
'business_function_template',
' ERROR-PG_EXCEPTION_DETAIL',
json_build_object('PG_EXCEPTION_DETAIL',error_message ), TRUE );
GET STACKED DIAGNOSTICS error_message = PG_EXCEPTION_HINT ;
PERFORM loc_audit_functions.make_log
(
'business_function_template',
' ERROR-PG_EXCEPTION_HINT',json_build_object('PG_EXCEPTION_HINT',error_message ), TRUE );
GET STACKED DIAGNOSTICS error_message = PG_EXCEPTION_CONTEXT ;
PERFORM loc_audit_functions.make_log
(
'business_function_template',
' ERROR-PG_EXCEPTION_CONTEXT',json_build_object('PG_EXCEPTION_CONTEXT',error_message ), TRUE );
RAISE WARNING 'ALARM: %' , SQLERRM ;
SELECT json_build_object
(
'isError' , TRUE ,
'errorMsg' , SQLERRM
) INTO error_json ;
RETURN error_json ;
END
$$ LANGUAGE plpgsql SECURITY DEFINER;Qhov no
Txhawm rau piav qhia cov duab dav dav, kuv xav tias nws txaus. Yog tias leej twg txaus siab rau cov ntsiab lus thiab cov txiaj ntsig, sau cov lus pom, kuv yuav zoo siab ntxiv qhov kov ntxiv rau daim duab.
PS
Logging ib qho yooj yim yuam kev - input parameter hom
-[ RECORD 1 ]-
date_trunc | 2020-08-19 13:15:46
id | 1072
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | STARTED
jsonb_pretty | {
| "dko": {
| "id": 4,
| "type": "Type1",
| "title": "CREATED BY addKD",
| "Weight": 10,
| "Tr": "300",
| "reduction": 10,
| "isTrud": "TRUE",
| "description": "decription",
| "lowerTr": "100",
| "measurement": "measurement1",
| "methodology": "m1",
| "passportUrl": "files",
| "upperTr": "200",
| "weightingFactor": 100.123,
| "actualTrValue": null,
| "upperTrCalcNumber": "120"
| },
| "CardId": 3
| }
-[ RECORD 2 ]-
date_trunc | 2020-08-19 13:15:46
id | 1073
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | ERROR
jsonb_pretty | {
| "SQLSTATE": "22P02"
| }
-[ RECORD 3 ]-
date_trunc | 2020-08-19 13:15:46
id | 1074
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | ERROR
jsonb_pretty | {
| "SQLERRM": "invalid input syntax for type numeric: "null""
| }
-[ RECORD 4 ]-
date_trunc | 2020-08-19 13:15:46
id | 1075
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | ERROR-RETURNED_SQLSTATE
jsonb_pretty | {
| "RETURNED_SQLSTATE": "22P02"
| }
-[ RECORD 5 ]-
date_trunc | 2020-08-19 13:15:46
id | 1076
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | ERROR-COLUMN_NAME
jsonb_pretty | {
| "COLUMN_NAME": ""
| }
-[ RECORD 6 ]-
date_trunc | 2020-08-19 13:15:46
id | 1077
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | ERROR-CONSTRAINT_NAME
jsonb_pretty | {
| "CONSTRAINT_NAME": ""
| }
-[ RECORD 7 ]-
date_trunc | 2020-08-19 13:15:46
id | 1078
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | ERROR-PG_DATATYPE_NAME
jsonb_pretty | {
| "PG_DATATYPE_NAME": ""
| }
-[ RECORD 8 ]-
date_trunc | 2020-08-19 13:15:46
id | 1079
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | ERROR-MESSAGE_TEXT
jsonb_pretty | {
| "MESSAGE_TEXT": "invalid input syntax for type numeric: "null""
| }
-[ RECORD 9 ]-
date_trunc | 2020-08-19 13:15:46
id | 1080
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | ERROR-SCHEMA_NAME
jsonb_pretty | {
| "SCHEMA_NAME": ""
| }
-[ RECORD 10 ]-
date_trunc | 2020-08-19 13:15:46
id | 1081
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | ERROR-PG_EXCEPTION_DETAIL
jsonb_pretty | {
| "PG_EXCEPTION_DETAIL": ""
| }
-[ RECORD 11 ]-
date_trunc | 2020-08-19 13:15:46
id | 1082
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | ERROR-PG_EXCEPTION_HINT
jsonb_pretty | {
| "PG_EXCEPTION_HINT": ""
| }
-[ RECORD 12 ]-
date_trunc | 2020-08-19 13:15:46
id | 1083
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | ERROR-PG_EXCEPTION_CONTEXT
jsonb_pretty | {
usename | emp1
log_module | addKD
log_module_hash | 0b4c1529a89af3ddf6af3821dc790e8a
status | ERROR-MESSAGE_TEXT
jsonb_pretty | {
| "MESSAGE_TEXT": "invalid input syntax for type numeric: "null""
| }
Tau qhov twg los: www.hab.com