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Commitb9cfe18

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Move DTMD and Sockhub to a separate contrib dir. Name it Arbiter.
Improve the usage manual in the arbiter launcher.
1 parent36e27a3 commitb9cfe18

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‎contrib/arbiter/Makefile‎

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top_builddir = ../..
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include$(top_builddir)/src/Makefile.global
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overrideCFLAGS += -fPIC
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overrideCPPFLAGS += -I. -Iinclude -Iapi -D_LARGEFILE64_SOURCE
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AR = ar
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ARFLAGS = -cru
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SOCKHUB_PREFIX=sockhub
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SOCKHUB_CFLAGS=-I"$(SOCKHUB_PREFIX)"
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SYSTEM=$(shell uname -s)
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ifeq ($(SYSTEM),Darwin)
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CFLAGS += -D_DARWIN_C_SOURCE
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endif
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.PHONY: all clean check bindir objdir libdir
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all: bin/arbiter bin/heart lib/libarbiter.a
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@echo Done.
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@echo Feel free to run the tests with\'make check\'.
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lib/libarbiter.a: obj/api.o | libdir objdir
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$(AR)$(ARFLAGS) lib/libarbiter.a obj/api.o
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bin/arbiter: obj/server.o obj/raft.o obj/main.o obj/clog.o obj/clogfile.o obj/util.o obj/transaction.o obj/snapshot.o obj/ddd.o | bindir objdir
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$(CC) -o bin/arbiter$(CFLAGS)$(CPPFLAGS)\
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obj/server.o obj/raft.o obj/main.o\
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obj/clog.o obj/clogfile.o obj/util.o obj/transaction.o\
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obj/snapshot.o obj/ddd.o
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bin/heart: obj/heart.o obj/raft.o obj/util.o | bindir objdir
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$(CC) -o bin/heart$(CFLAGS)$(CPPFLAGS)\
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obj/heart.o obj/raft.o obj/util.o\
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obj/snapshot.o\
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$(SOCKHUB_LDFLAGS)
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obj/api.o: api/arbiter.c | objdir
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$(CC) -c -o obj/api.o$(CFLAGS)$(CPPFLAGS)$(SOCKHUB_CFLAGS) api/arbiter.c
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obj/server.o: src/server.c | objdir
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$(CC) -c -o obj/server.o$(CFLAGS)$(CPPFLAGS)$(SOCKHUB_CFLAGS) src/server.c
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check: bin/util-test bin/clog-test
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./check.sh util clog
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obj/%.o: src/%.c | objdir
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$(CC)$(CFLAGS)$(CPPFLAGS) -c -o$@$<
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bin/util-test: obj/util-test.o obj/util.o | bindir
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$(CC) -o bin/util-test$(CFLAGS)$(CPPFLAGS) obj/util-test.o obj/util.o
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bin/clog-test: obj/clog-test.o obj/clog.o obj/clogfile.o obj/util.o | bindir
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$(CC) -o bin/clog-test$(CFLAGS)$(CPPFLAGS) obj/clog-test.o obj/clog.o obj/clogfile.o obj/util.o
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bindir:
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mkdir -p bin
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objdir:
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mkdir -p obj
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libdir:
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mkdir -p lib
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clean:
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rm -rfv bin obj lib test.log

‎contrib/pg_dtm/dtmd/README‎renamed to ‎contrib/arbiter/README‎

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===
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xtm
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===
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=======
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Arbiter
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=======
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Distributed transaction management tools for PostgreSQL.
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Arbiter is a daemon responsible for distributed transaction management.
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It implements the XTM protocol.
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--------------------
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Communication scheme
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--------------------
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┏━━━━━━━━━┓
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┌────────┨ Backend ┠──────────┐
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│ ┗━━━━━━━━━┛ │
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┏━━━━┷━━━━┓ ┏━━━━━━━━━┓ ┏━━━━━━┷━━━━━━┓
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┃ Arbiter ┠───┨ Backend ┠───┨ Coordinator ┃
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┗━━━━┯━━━━┛ ┗━━━━━━━━━┛ ┗━━━━━━┯━━━━━━┛
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│ ┏━━━━━━━━━┓ │
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└──┬─────┨ Backend ┠───────┬──┘
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┆ ┗━━━━━━━━━┛ ┆
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libdtm + libsockhub libpq + xtm procs
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-----------------------
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Coordinator-Backend API
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-----------------------
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This API includes a set of postgres procedures that
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the coordinator can call with "select" statement.
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FIXME: actualize the API
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┏━━━━━━━━━┓
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┌────────┨ Backend ┠──────────┐
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┏━━━┷━━━━━┓ ┗━━━━━━━━━┛ │
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┏┻━━━━━━━━┓┃ ┏━━━━━━━━━┓ ┏━━━━━━┷━━━━━━┓
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┏┻━━━━━━━━┓┣┹──┨ Backend ┠───┨ Coordinator ┃
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┃ Arbiter ┣┛ ┗━━━━━━━━━┛ ┗━━━━━━┯━━━━━━┛
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┗━━━━━┯━━━┛ ┏━━━━━━━━━┓ │
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└──┬─────┨ Backend ┠───────┬──┘
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┆ ┗━━━━━━━━━┛ ┆
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libarbiter + libsockhub libpq + xtm procs
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---
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API
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---
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For the API see the contents of 'include/api.h', it is packed with comments.
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Compile with '-larbiter'.
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------------------------
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Backend-Arbiter Protocol

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