Msukumo wa kuandika mchoro huu ulikuwa ni makala . Pia nilipata nakala iliyochapishwa miaka 4 iliyopita ya kupendeza - .
Ilionekana kupendeza kuwa wazo lile lile - "kutekeleza mantiki ya biashara katika hifadhidata".
Sio mimi tu niliyekuja akilini.
Pia, kwa siku zijazo, nilitaka kuhifadhi, kwanza kabisa, kwa ajili yangu mwenyewe, maendeleo ya kuvutia yaliyotokea wakati wa utekelezaji. Hasa kwa kuzingatia kwamba hivi karibuni uamuzi wa kimkakati ulifanywa kubadilisha usanifu na kuhamisha mantiki ya biashara hadi kiwango cha nyuma. Ili kila kitu ambacho kimetengenezwa hivi karibuni hakitakuwa na manufaa kwa mtu yeyote na hakitakuwa na manufaa kwa mtu yeyote.
Mbinu zilizoelezewa sio aina fulani ya ugunduzi au za kipekee. kujua jinsi gani, kila kitu ni classic na imetekelezwa mara kadhaa (kwa mfano, nilitumia mbinu sawa miaka 20 iliyopita kwenye Oracle) Niliamua tu kukusanya kila kitu katika sehemu moja. Ikiwa inakuja kwa manufaa kwa mtu. Kama mazoezi yameonyesha, mara nyingi wazo moja huja kwa watu tofauti kwa kujitegemea. Na ni muhimu kuiweka mwenyewe kama ukumbusho.
Kwa kweli, hakuna kitu katika ulimwengu huu ambacho ni kamili, makosa na makosa yanawezekana kwa bahati mbaya. Ukosoaji na maoni yanakaribishwa sana na yanatarajiwa. Na jambo moja dogo zaidi - maelezo mahususi ya utekelezaji yameachwa. Bado, kila kitu bado kinatumika katika mradi halisi wa kufanya kazi. Kwa hiyo, makala ni mchoro tu na maelezo ya dhana ya jumla, hakuna zaidi. Natumai kuna maelezo ya kutosha kuelewa picha ya jumla.
Wazo la jumla ni "gawanya na kushinda, kujificha na kumiliki"
Wazo ni la kawaida - schema tofauti ya meza, schema tofauti ya kazi zilizohifadhiwa.
Mteja hana ufikiaji wa data moja kwa moja. Kiteja anachoweza kufanya ni kupiga simu kitendakazi kilichohifadhiwa na kuchakata jibu lililopokelewa.
Wajibu
CREATE ROLE store;
CREATE ROLE sys_functions;
CREATE ROLE loc_audit_functions;
CREATE ROLE service_functions;
CREATE ROLE business_functions;
Mipango
Mpango wa uhifadhi wa meza
Majedwali lengwa yanayotekeleza huluki za masomo.
CREATE SCHEMA store AUTHORIZATION store ;
Mchoro wa kazi ya mfumo
Kazi za mfumo, haswa kwa mabadiliko ya jedwali la ukataji miti.
CREATE SCHEMA sys_functions AUTHORIZATION sys_functions ;
Mpango wa ukaguzi wa ndani
Kazi na majedwali ya kutekeleza ukaguzi wa ndani wa utekelezaji wa kazi zilizohifadhiwa na mabadiliko kwenye majedwali lengwa.
CREATE SCHEMA loc_audit_functions AUTHORIZATION loc_audit_functions;
Mchoro wa kazi ya huduma
Kazi za huduma na vitendaji vya DML.
CREATE SCHEMA service_functions AUTHORIZATION service_functions;
Mchoro wa kazi ya biashara
Kazi za kazi za mwisho za biashara zinazoitwa na mteja.
CREATE SCHEMA business_functions AUTHORIZATION business_functions;
Haki za upatikanaji
Jukumu - DBA ina ufikiaji kamili wa miundo yote (iliyotenganishwa na jukumu la Mmiliki wa DB).
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;
Jukumu - USER ina fursa MTENDAJI katika mchoro kazi_za_biashara.
CREATE ROLE user_role;
Haki kati ya mipango
Ruzuku
Kwa kuwa kazi zote zinaundwa na sifa UFAFANUZI WA USALAMA maelekezo yanayohitajika BATILI UTEKELEZAJI KWA KAZI ZOTE⦠KUTOKA kwa umma;
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 ;
Kwa hivyo schema ya hifadhidata iko tayari. Unaweza kuanza kujaza data.
Majedwali yaliyolengwa
Kuunda meza ni jambo dogo. Hakuna vipengele maalum, isipokuwa kwamba iliamuliwa kutotumia MUHIMU na kuzalisha mifuatano kwa uwazi. Plus, bila shaka, matumizi ya juu ya maelekezo
COMMENT ON ...Maoni kwa Kila vitu, bila ubaguzi.
Ukaguzi wa ndani
Ili kuweka utekelezwaji wa kazi zilizohifadhiwa na mabadiliko kwa meza zinazolengwa, jedwali la ukaguzi wa ndani hutumiwa, ambalo linajumuisha, kati ya mambo mengine, maelezo ya muunganisho wa mteja, lebo ya moduli inayoitwa, na maadili halisi ya pembejeo na maadili. vigezo vya pato katika mfumo wa JSON.
Kazi za mfumo
Imeundwa kwa ajili ya mabadiliko ya kumbukumbu katika majedwali lengwa. Wao ni vichochezi.
Kigezo - kazi ya mfumo
---------------------------------------------------------
-- 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 ();Vipengele vya huduma
Imeundwa kutekeleza huduma na shughuli za DML kwenye majedwali lengwa.
Kigezo - kazi ya huduma
--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;Kazi za biashara
Imeundwa kwa ajili ya utendaji wa mwisho wa biashara unaoitwa na mteja. Wanarudi kila wakati - JSON. Ili kukatiza na kuweka makosa ya utekelezaji, tumia kizuizi UFUNZO.
Kigezo - kazi ya biashara
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;Jumla ya
Ili kuelezea picha ya jumla, nadhani inatosha. Ikiwa mtu yeyote ana nia ya maelezo na matokeo, andika maoni, nitafurahi kuongeza maelezo ya ziada kwenye picha.
PS
Kuingia kwa hitilafu rahisi - aina ya parameta ya pembejeo
-[ 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""
| }
Chanzo: mapenzi.com