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#ifndef UDO_PGDB
#define UDO_PGDB ##
/*
PostgreSQL connection and tools
This file is part of the SONICS UDO collection by Richard Knight 2021, 2022
License: GPL-2.0-or-later
http://1bpm.net
*/
#include "__config__.udo"
#define USING_DB ##
gidb dbconnect "postgresql", "$PGDB_HOST", "$PGDB_NAME", "$PGDB_USER", "$PGDB_PASSWORD"
/*
Escape a SQL string
Soutput sqlescape Sinput
Sinput string to be escaped
Soutput escaped string
*/
opcode pgdb_sqlescape, S, S
Sdata xin
Sout = ""
ilen = strlen(Sdata)
index = 0
while (index < ilen) do
Schar = strsub(Sdata, index, index+1)
if (strcmp(Schar, "'") == 0) then
Sout = strcat(Sout, "''")
else
Sout = strcat(Sout, Schar)
endif
index += 1
od
xout Sout
endop
/*
Escape a SQL string at k-rate
Soutput sqlescape Sinput
Sinput string to be escaped
Soutput escaped string
*/
opcode pgdb_sqlescapek, S, S
Sdata xin
Sout = ""
klen = strlenk(Sdata)
kindex init 0
while (kindex < klen) do
Schar = strsubk(Sdata, kindex, kindex+1)
if (strcmpk(Schar, "'") == 0) then
Sout = strcatk(Sout, "''")
else
Sout = strcatk(Sout, Schar)
endif
kindex += 1
od
xout Sout
endop
/*
Save a JSON object to the database with a given name and unit
pgdb_json_save Sname, Sunit, iJson
Sname name of object
Sunit category of object
iJson JSON object
*/
opcode pgdb_json_save, 0, SSi
Sname, Sunit, iJson xin
Squery = sprintf("DELETE FROM savejson WHERE name = '%s' AND unit = '%s'; INSERT INTO savejson (name, unit, data, created) VALUES ('%s', '%s', '%s', current_timestamp)",\
Sname, Sunit, Sname, Sunit, jsondumps(iJson, 0)\
)
dbexec gidb, Squery
endop
/*
Load a JSON object from the database
iJson pgdb_json_load Sname, Sunit
iJson the JSON object if successful, otherwise -1 if the requested data does not exist
Sname name of saved object
Sunit category of saved object
*/
opcode pgdb_json_load, i, SS
Sname, Sunit xin
Squery = sprintf("SELECT data::text FROM savejson WHERE name = '%s' AND unit = '%s' UNION SELECT 'void'", Sname, Sunit)
Sresult dbscalar gidb, Squery
if (strcmp(Squery, "void") == 0) then
iJson = -1
else
iJson = jsonloads(Sresult)
endif
xout iJson
endop
/*
Save an array to the database with a given name
pgdb_array_save Sname, Sunit, iarray[]
Sname name of the save data
Sunit unit to associate save data with
iarray[] the array to save
*/
opcode pgdb_array_save, 0, SSi[]
Sname, Sunit, iarray[] xin
Sname = pgdb_sqlescape(Sname)
Sunit = pgdb_sqlescape(Sunit)
dbexec gidb, sprintf("DELETE FROM savearray WHERE name = '%s' AND unit = '%s'", Sname, Sunit)
ilen = lenarray(iarray)
index = 0
Sdata = ""
while (index < ilen) do
if (index != 0) then
Sdata = strcat(Sdata, ",")
endif
Sdata = strcat(Sdata, sprintf("%f", iarray[index]))
index += 1
od
Squery = sprintf("INSERT INTO savearray (name, data, unit, created) VALUES ('%s', array[%s], '%s', current_timestamp)", Sname, Sdata, Sunit)
dbexec gidb, Squery
endop
opcode pgdb_array_save, 0, SSS[]
Sname, Sunit, Sarray[] xin
Sname = pgdb_sqlescape(Sname)
Sunit = pgdb_sqlescape(Sunit)
dbexec gidb, sprintf("DELETE FROM savearray WHERE name = '%s' AND unit = '%s'", Sname, Sunit)
ilen = lenarray(Sarray)
index = 0
Sdata = ""
while (index < ilen) do
if (index != 0) then
Sdata = strcat(Sdata, ",")
endif
Sdata = strcat(Sdata, sprintf("'%s'", Sarray[index]))
index += 1
od
Squery = sprintf("INSERT INTO savearray (name, textdata, unit, created) VALUES ('%s', array[%s], '%s', current_timestamp)", Sname, Sdata, Sunit)
dbexec gidb, Squery
endop
/*
Save a ftable to the database with a given name
pgdb_table_save Sname, Sunit, ifn
Sname name of the save data
Sunit unit to associate save data with
ifn ftable number
*/
opcode pgdb_table_save, 0, SSi
Sname, Sunit, ifn xin
Sname = pgdb_sqlescape(Sname)
Sunit = pgdb_sqlescape(Sunit)
ilen = ftlen(ifn)
index = 0
Sdata = ""
while (index < ilen) do
Sdata = strcat(Sdata, sprintf("%f", table:i(index, ifn)))
if (index + 1 < ilen) then
Sdata = strcat(Sdata, ",")
endif
index += 1
od
Squery = sprintf("DELETE FROM savearray WHERE name = '%s' AND unit = '%s'; INSERT INTO savearray (name, data, unit, created) VALUES ('%s', array[%s], '%s', current_timestamp)",\
Sname, Sunit, Sname, Sdata, Sunit\
)
dbexec gidb, Squery
endop
; broken
opcode pgdb_table_savek, k, SSkk
Sname, Sunit, kfn, ktrig xin
;Sname pgdb_sqlescape Sname
;Sunit pgdb_sqlescape Sunit
if (ktrig == 1) then
printk2 tablekt:k(1, kfn)
klen = tableng(kfn)
kindex = 0
Sdata = ""
while (kindex < klen) do
Sdata = strcatk(Sdata, sprintfk("%f", tablekt:k(kindex, kfn)))
if (kindex + 1 < klen) then
Sdata = strcatk(Sdata, ",")
endif
kindex += 1
od
Squery sprintfk "DELETE FROM savearray WHERE name = '%s' AND unit = '%s'; INSERT INTO savearray (name, data, unit, created) VALUES ('%s', array[%s], '%s', current_timestamp)\n",\
Sname, Sunit, Sname, Sdata, Sunit
kdone dbexec_k gidb, Squery, ktrig
printf Squery, ktrig
endif
xout kdone
endop
/*
Get an array from the database with a given name
iarray[] array_get Sname
Sname name of the save data
iarray[] the resulting array
*/
opcode pgdb_array_get, i[], SS
Sname, Sunit xin
Sname = pgdb_sqlescape(Sname)
Sunit = pgdb_sqlescape(Sunit)
Squery = sprintf("SELECT UNNEST(data) FROM savearray WHERE name = '%s' AND unit = '%s'", Sname, Sunit)
iresult[][] dbarray gidb, Squery
idata[] init lenarray(iresult)
index = 0
; TODO : can use getcol here??
while (index < lenarray(idata)) do
idata[index] = iresult[index][0]
index += 1
od
xout idata
endop
opcode pgdb_array_get, S[], SS
Sname, Sunit xin
Sname = pgdb_sqlescape(Sname)
Sunit = pgdb_sqlescape(Sunit)
Squery = sprintf("SELECT UNNEST(textdata) FROM savearray WHERE name = '%s' AND unit = '%s'", Sname, Sunit)
Sresult[][] dbarray gidb, Squery
Sdata[] init lenarray(Sresult)
index = 0
; TODO : can use getcol here??
while (index < lenarray(Sdata)) do
Sdata[index] = Sresult[index][0]
index += 1
od
xout Sdata
endop
/*
Get a ftable from the database with a given name: load to an existing table if ifnexisting not specified
ifn pgdb_table_get Sname, [ifnexisting]
Sname name of the save data
ifn the resulting ftable
ifnexisting the table to load to, if not long enough, values will be limited
*/
opcode pgdb_table_get, i, SSj
Sname, Sunit, ifnexisting xin
Sname = pgdb_sqlescape(Sname)
Sunit = pgdb_sqlescape(Sunit)
Squery = sprintf("SELECT UNNEST(data) FROM savearray WHERE name = '%s' AND unit = '%s'", Sname, Sunit)
iresult[][] dbarray gidb, Squery
if (lenarray(iresult) > 0) then
ifn = (ifnexisting == -1) ? ftgen(0, 0, lenarray(iresult), 7, 0) : ifnexisting
index = 0
while (index < min(lenarray(iresult), ftlen(ifn))) do
tablew iresult[index][0], index, ifn
index += 1
od
endif
xout ifn
endop
/*
Prewarm a relation (load to memory)
pgdb_prewarm Srelation
Srelation name of relation (ie table/view)
*/
opcode pgdb_prewarm, 0, S
Srelation xin
icheck dbscalar gidb, sprintf("SELECT COALESCE(pg_prewarm('%s'), 0)", Srelation)
endop
#end
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