From a711689368fe0915a2f18ea61fe6e953647d0174 Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Thu, 30 Nov 2006 20:13:59 +0000 Subject: [PATCH] * First remote operation: isValidPath(). --- src/libstore/Makefile.am | 3 ++- src/libstore/remote-store.cc | 18 ++++++++++++++---- src/libstore/worker-protocol.hh | 16 ++++++++++++++++ src/nix-worker/main.cc | 33 +++++++++++++++++++++++++++++++-- 4 files changed, 63 insertions(+), 7 deletions(-) create mode 100644 src/libstore/worker-protocol.hh diff --git a/src/libstore/Makefile.am b/src/libstore/Makefile.am index 1f294fde6..0801cba07 100644 --- a/src/libstore/Makefile.am +++ b/src/libstore/Makefile.am @@ -6,7 +6,8 @@ libstore_la_SOURCES = \ pkginclude_HEADERS = \ store-api.hh local-store.cc remote-store.cc derivations.hh misc.hh \ - globals.hh db.hh references.hh pathlocks.hh gc.hh + globals.hh db.hh references.hh pathlocks.hh gc.hh \ + worker-protocol.hh libstore_la_LIBADD = ../libutil/libutil.la ../boost/format/libformat.la diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc index 6f3c110a3..f59fe8b98 100644 --- a/src/libstore/remote-store.cc +++ b/src/libstore/remote-store.cc @@ -1,6 +1,7 @@ #include "serialise.hh" #include "util.hh" #include "remote-store.hh" +#include "worker-protocol.hh" #include #include @@ -55,27 +56,36 @@ RemoteStore::RemoteStore() /* Send the magic greeting, check for the reply. */ - writeInt(0x6e697864, to); + writeInt(WORKER_MAGIC_1, to); unsigned int magic = readInt(from); - if (magic != 0x6478696e) throw Error("protocol mismatch"); + if (magic != WORKER_MAGIC_2) throw Error("protocol mismatch"); } RemoteStore::~RemoteStore() { + writeInt(wopQuit, to); + readInt(from); + child.wait(true); } bool RemoteStore::isValidPath(const Path & path) { - throw Error("not implemented"); + writeInt(wopIsValidPath, to); + writeString(path, to); + unsigned int reply = readInt(from); + return reply != 0; } Substitutes RemoteStore::querySubstitutes(const Path & srcPath) { - throw Error("not implemented"); + // writeInt(wopQuerySubstitutes); + + // throw Error("not implemented 2"); + return Substitutes(); } diff --git a/src/libstore/worker-protocol.hh b/src/libstore/worker-protocol.hh new file mode 100644 index 000000000..0ba0c374e --- /dev/null +++ b/src/libstore/worker-protocol.hh @@ -0,0 +1,16 @@ +#ifndef __WORKER_PROTOCOL_H +#define __WORKER_PROTOCOL_H + + +#define WORKER_MAGIC_1 0x6e697864 +#define WORKER_MAGIC_2 0x6478696e + + +typedef enum { + wopQuit = 0, + wopIsValidPath = 1, + wopQuerySubstitutes = 2, +} WorkerOp; + + +#endif /* !__WORKER_PROTOCOL_H */ diff --git a/src/nix-worker/main.cc b/src/nix-worker/main.cc index f71b604d0..d6966c2bf 100644 --- a/src/nix-worker/main.cc +++ b/src/nix-worker/main.cc @@ -2,6 +2,7 @@ #include "local-store.hh" #include "util.hh" #include "serialise.hh" +#include "worker-protocol.hh" using namespace nix; @@ -11,11 +12,39 @@ void processConnection(Source & from, Sink & to) store = boost::shared_ptr(new LocalStore(true)); unsigned int magic = readInt(from); - if (magic != 0x6e697864) throw Error("protocol mismatch"); + if (magic != WORKER_MAGIC_1) throw Error("protocol mismatch"); - writeInt(0x6478696e, to); + writeInt(WORKER_MAGIC_2, to); debug("greeting exchanged"); + + bool quit = false; + + do { + + WorkerOp op = (WorkerOp) readInt(from); + + switch (op) { + + case wopQuit: + /* Close the database. */ + store.reset((StoreAPI *) 0); + writeInt(1, to); + quit = true; + break; + + case wopIsValidPath: { + Path path = readString(from); + assertStorePath(path); + writeInt(store->isValidPath(path), to); + break; + } + + default: + throw Error("invalid operation"); + } + + } while (!quit); }