forked from lix-project/lix
174 lines
4 KiB
C++
174 lines
4 KiB
C++
#include "shared.hh"
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#include "local-store.hh"
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#include "util.hh"
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#include "serialise.hh"
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#include "worker-protocol.hh"
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#include "archive.hh"
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#include <iostream>
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using namespace nix;
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Path readStorePath(Source & from)
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{
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Path path = readString(from);
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assertStorePath(path);
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return path;
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}
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PathSet readStorePaths(Source & from)
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{
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PathSet paths = readStringSet(from);
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for (PathSet::iterator i = paths.begin(); i != paths.end(); ++i)
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assertStorePath(*i);
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return paths;
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}
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void processConnection(Source & from, Sink & to)
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{
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store = boost::shared_ptr<StoreAPI>(new LocalStore(true));
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unsigned int magic = readInt(from);
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if (magic != WORKER_MAGIC_1) throw Error("protocol mismatch");
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writeInt(WORKER_MAGIC_2, to);
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debug("greeting exchanged");
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bool quit = false;
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unsigned int opCount = 0;
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do {
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WorkerOp op = (WorkerOp) readInt(from);
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opCount++;
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switch (op) {
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case wopQuit: {
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/* Close the database. */
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store.reset((StoreAPI *) 0);
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writeInt(1, to);
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quit = true;
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break;
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}
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case wopIsValidPath: {
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Path path = readStorePath(from);
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writeInt(store->isValidPath(path), to);
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break;
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}
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case wopHasSubstitutes: {
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Path path = readStorePath(from);
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writeInt(store->hasSubstitutes(path), to);
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break;
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}
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case wopQueryPathHash: {
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Path path = readStorePath(from);
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writeString(printHash(store->queryPathHash(path)), to);
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break;
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}
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case wopQueryReferences:
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case wopQueryReferrers: {
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Path path = readStorePath(from);
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PathSet paths;
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if (op == wopQueryReferences)
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store->queryReferences(path, paths);
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else
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store->queryReferrers(path, paths);
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writeStringSet(paths, to);
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break;
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}
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case wopAddToStore: {
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/* !!! uberquick hack */
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string baseName = readString(from);
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bool fixed = readInt(from) == 1;
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bool recursive = readInt(from) == 1;
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string hashAlgo = readString(from);
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Path tmp = createTempDir();
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Path tmp2 = tmp + "/" + baseName;
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restorePath(tmp2, from);
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writeString(store->addToStore(tmp2, fixed, recursive, hashAlgo), to);
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deletePath(tmp);
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break;
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}
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case wopAddTextToStore: {
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string suffix = readString(from);
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string s = readString(from);
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PathSet refs = readStorePaths(from);
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writeString(store->addTextToStore(suffix, s, refs), to);
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break;
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}
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case wopBuildDerivations: {
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PathSet drvs = readStorePaths(from);
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store->buildDerivations(drvs);
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writeInt(1, to);
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break;
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}
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case wopEnsurePath: {
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Path path = readStorePath(from);
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store->ensurePath(path);
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writeInt(1, to);
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break;
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}
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default:
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throw Error(format("invalid operation %1%") % op);
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}
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} while (!quit);
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printMsg(lvlError, format("%1% worker operations") % opCount);
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}
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void run(Strings args)
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{
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bool slave = false;
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bool daemon = false;
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for (Strings::iterator i = args.begin(); i != args.end(); ) {
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string arg = *i++;
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if (arg == "--slave") slave = true;
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if (arg == "--daemon") daemon = true;
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}
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if (slave) {
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FdSource source(STDIN_FILENO);
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FdSink sink(STDOUT_FILENO);
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processConnection(source, sink);
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}
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else if (daemon)
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throw Error("daemon mode not implemented");
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else
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throw Error("must be run in either --slave or --daemon mode");
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}
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#include "help.txt.hh"
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void printHelp()
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{
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std::cout << string((char *) helpText, sizeof helpText);
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}
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string programId = "nix-worker";
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