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Commit0c2f5df

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Intermediate commit for many efforts saving: exchange node (without transport) + planner base rules
1 parent678ac3d commit0c2f5df

29 files changed

+2533
-2
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‎.gitignore

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@@ -44,4 +44,5 @@ lib*.pc
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/tmp_install/
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/.cproject
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/.project
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/.gdb_history
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/.settings/

‎contrib/Makefile

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@@ -30,6 +30,7 @@ SUBDIRS = \
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pageinspect\
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passwordcheck\
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pg_buffercache\
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pg_exchange\
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pg_execplan\
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pg_freespacemap\
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pg_prewarm\

‎contrib/pg_exchange/LICENSE

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ParGRES is released under the PostgreSQL License, a liberal Open Source license, similar to the BSD or MIT licenses.
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Copyright (c) 2018-2019, Postgres Professional
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Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
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Portions Copyright (c) 1994, The Regents of the University of California
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Permission to use, copy, modify, and distribute this software and its documentation for any purpose, without fee, and without a written agreement is hereby granted, provided that the above copyright notice and this paragraph and the following two paragraphs appear in all copies.
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IN NO EVENT SHALL POSTGRES PROFESSIONAL BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF POSTGRES PROFESSIONAL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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POSTGRES PROFESSIONAL SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND POSTGRES PROFESSIONAL HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

‎contrib/pg_exchange/Makefile

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# contrib/pg_exchange/Makefile
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MODULE_big = pg_exchange
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EXTENSION = pg_exchange
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EXTVERSION = 0.1
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PGFILEDESC = "pg_exchange - an exchange custom node and rules for the planner"
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MODULES = pg_exchange
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OBJS = pg_exchange.o exchange.o connection.o hooks.o common.o nodeDummyscan.o nodeDistPlanExec.o$(WIN32RES)
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fdw_srcdir =$(top_srcdir)/contrib/postgres_fdw/
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PG_CPPFLAGS = -I$(libpq_srcdir) -I$(fdw_srcdir) -L$(fdw_srcdir)
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SHLIB_LINK_INTERNAL =$(libpq)
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DATA_built =$(EXTENSION)--$(EXTVERSION).sql
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ifdefUSE_PGXS
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PG_CONFIG = pg_config
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PGXS :=$(shell$(PG_CONFIG) --pgxs)
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include$(PGXS)
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else
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EXTRA_INSTALL = contrib/postgres_fdw
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SHLIB_PREREQS = submake-libpq
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subdir = contrib/pg_exchange
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top_builddir = ../..
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include$(top_builddir)/src/Makefile.global
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include$(top_srcdir)/contrib/contrib-global.mk
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endif
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$(EXTENSION)--$(EXTVERSION).sql: init.sql
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cat$^>$@

‎contrib/pg_exchange/common.c

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/* ------------------------------------------------------------------------
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*
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* common.c
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*Common code for ParGRES extension
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*
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* Copyright (c) 2018, Postgres Professional
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*
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* ------------------------------------------------------------------------
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*/
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#include"postgres.h"
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#include"access/heapam.h"
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#include"access/htup_details.h"
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#include"access/genam.h"
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#include"access/sysattr.h"
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#include"access/xact.h"
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#include"catalog/indexing.h"
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#include"catalog/pg_extension.h"
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#include"commands/extension.h"
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#include"utils/fmgroids.h"
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#include"common.h"
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/* GUC variables */
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intnode_number;
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intnodes_at_cluster;
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char*pargres_hosts_string=NULL;
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char*pargres_ports_string=NULL;
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inteports_pool_size=100;
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intCoordNode=-1;
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boolPargresInitialized= false;
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PortStack*PORTS;
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Oid
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get_pargres_schema(void)
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{
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Oidresult;
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Relationrel;
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SysScanDescscandesc;
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HeapTupletuple;
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ScanKeyDataentry[1];
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Oidext_oid;
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/* It's impossible to fetch pg_pathman's schema now */
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if (!IsTransactionState())
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returnInvalidOid;
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ext_oid=get_extension_oid("pargres", true);
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if (ext_oid==InvalidOid)
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returnInvalidOid;/* exit if pg_pathman does not exist */
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ScanKeyInit(&entry[0],
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ObjectIdAttributeNumber,
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BTEqualStrategyNumber,F_OIDEQ,
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ObjectIdGetDatum(ext_oid));
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rel=heap_open(ExtensionRelationId,AccessShareLock);
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scandesc=systable_beginscan(rel,ExtensionOidIndexId, true,
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NULL,1,entry);
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tuple=systable_getnext(scandesc);
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/* We assume that there can be at most one matching tuple */
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if (HeapTupleIsValid(tuple))
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result= ((Form_pg_extension)GETSTRUCT(tuple))->extnamespace;
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else
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result=InvalidOid;
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systable_endscan(scandesc);
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heap_close(rel,AccessShareLock);
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returnresult;
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}
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void
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STACK_Init(PortStack*stack,intrange_min,intsize)
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{
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inti;
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LWLockAcquire(&stack->lock,LW_EXCLUSIVE);
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stack->size=size;
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stack->index=0;
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for (i=0;i<stack->size;i++)
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stack->values[i]=range_min+i;
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LWLockRelease(&stack->lock);
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}
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int
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STACK_Pop(PortStack*stack)
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{
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intvalue;
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LWLockAcquire(&stack->lock,LW_EXCLUSIVE);
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Assert(stack->index<stack->size);
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value=stack->values[stack->index++];
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LWLockRelease(&stack->lock);
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returnvalue;
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}
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void
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STACK_Push(PortStack*stack,intvalue)
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{
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LWLockAcquire(&stack->lock,LW_EXCLUSIVE);
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Assert(stack->index>0);
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stack->values[--stack->index]=value;
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LWLockRelease(&stack->lock);
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}

‎contrib/pg_exchange/common.h

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/*-------------------------------------------------------------------------
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*
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* common.h
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*Common code for ParGRES extension
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*
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* Copyright (c) 2018, PostgreSQL Global Development Group
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* Author: Andrey Lepikhov <a.lepikhov@postgrespro.ru>
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*
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* IDENTIFICATION
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*contrib/pargres/common.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndefCOMMON_H_
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#defineCOMMON_H_
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#include"nodes/pg_list.h"
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#include"storage/lock.h"
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typedefstruct
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{
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LWLocklock;
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intsize;
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intindex;
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intvalues[FLEXIBLE_ARRAY_MEMBER];
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}PortStack;
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/* GUC variables */
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externintnode_number;
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externintnodes_at_cluster;
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externchar*pargres_hosts_string;
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externchar*pargres_ports_string;
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externinteports_pool_size;
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externPortStack*PORTS;
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externintCoordNode;
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externboolPargresInitialized;
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externOidget_pargres_schema(void);
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externvoidSTACK_Init(PortStack*stack,intrange_min,intsize);
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intSTACK_Pop(PortStack*stack);
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voidSTACK_Push(PortStack*stack,intvalue);
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#endif/* COMMON_H_ */

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