X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/e7aea3985734af1702fde6e2b0af90b992425334..3bbce699ee1a5dbbe37806aee7afcc615ecc6ebe:/methods/mirror.cc diff --git a/methods/mirror.cc b/methods/mirror.cc index b2b6b2ecf..d6c5ba955 100644 --- a/methods/mirror.cc +++ b/methods/mirror.cc @@ -8,6 +8,9 @@ ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ +#include + +#include #include #include #include @@ -15,12 +18,17 @@ #include #include #include +#include +#include +#include #include #include + #include #include #include +#include #include using namespace std; @@ -29,7 +37,7 @@ using namespace std; #include "mirror.h" #include "http.h" -#include "apti18n.h" +#include /*}}}*/ /* Done: @@ -50,7 +58,7 @@ using namespace std; */ MirrorMethod::MirrorMethod() - : HttpMethod(), DownloadedMirrorFile(false) + : HttpMethod(), DownloadedMirrorFile(false), Debug(false) { }; @@ -103,7 +111,7 @@ bool MirrorMethod::Clean(string Dir) continue; // see if we have that uri - for(I=list.begin(); I != list.end(); I++) + for(I=list.begin(); I != list.end(); ++I) { string uri = (*I)->GetURI(); if(uri.find("mirror://") != 0) @@ -116,32 +124,100 @@ bool MirrorMethod::Clean(string Dir) if (I == list.end()) unlink(Dir->d_name); }; - - chdir(StartDir.c_str()); + closedir(D); + if (chdir(StartDir.c_str()) != 0) + return _error->Errno("chdir",_("Unable to change to %s"),StartDir.c_str()); return true; } bool MirrorMethod::DownloadMirrorFile(string mirror_uri_str) { - if(Debug) - clog << "MirrorMethod::DownloadMirrorFile(): " << endl; - // not that great to use pkgAcquire here, but we do not have // any other way right now string fetch = BaseUri; fetch.replace(0,strlen("mirror://"),"http://"); +#if 0 // no need for this, the getArchitectures() will also include the main + // arch + // append main architecture + fetch += "?arch=" + _config->Find("Apt::Architecture"); +#endif + + // append all architectures + std::vector vec = APT::Configuration::getArchitectures(); + for (std::vector::const_iterator I = vec.begin(); + I != vec.end(); ++I) + if (I == vec.begin()) + fetch += "?arch=" + (*I); + else + fetch += "&arch=" + (*I); + + // append the dist as a query string + if (Dist != "") + fetch += "&dist=" + Dist; + + if(Debug) + clog << "MirrorMethod::DownloadMirrorFile(): '" << fetch << "'" + << " to " << MirrorFile << endl; + pkgAcquire Fetcher; new pkgAcqFile(&Fetcher, fetch, "", 0, "", "", "", MirrorFile); bool res = (Fetcher.Run() == pkgAcquire::Continue); - if(res) + if(res) { DownloadedMirrorFile = true; + chmod(MirrorFile.c_str(), 0644); + } Fetcher.Shutdown(); + + if(Debug) + clog << "MirrorMethod::DownloadMirrorFile() success: " << res << endl; + return res; } +// Randomizes the lines in the mirror file, this is used so that +// we spread the load on the mirrors evenly +bool MirrorMethod::RandomizeMirrorFile(string mirror_file) +{ + vector content; + string line; + + if (!FileExists(mirror_file)) + return false; + + // read + ifstream in(mirror_file.c_str()); + while ( !in.eof() ) { + getline(in, line); + content.push_back(line); + } + + // we want the file to be random for each different machine, but also + // "stable" on the same machine. this is to avoid running into out-of-sync + // issues (i.e. Release/Release.gpg different on each mirror) + struct utsname buf; + int seed=1, i; + if(uname(&buf) == 0) { + for(i=0,seed=1; buf.nodename[i] != 0; i++) { + seed = seed * 31 + buf.nodename[i]; + } + } + srand( seed ); + random_shuffle(content.begin(), content.end()); + + // write + ofstream out(mirror_file.c_str()); + while ( !content.empty()) { + line = content.back(); + content.pop_back(); + out << line << "\n"; + } + + return true; +} + /* convert a the Queue->Uri back to the mirror base uri and look * at all mirrors we have for this, this is needed as queue->uri * may point to different mirrors (if TryNextMirror() was run) @@ -153,11 +229,12 @@ void MirrorMethod::CurrentQueueUriToMirror() return; // find current mirror and select next one - for (int i=0; i < AllMirrors.size(); i++) + for (vector::const_iterator mirror = AllMirrors.begin(); + mirror != AllMirrors.end(); ++mirror) { - if (Queue->Uri.find(AllMirrors[i]) == 0) + if (Queue->Uri.find(*mirror) == 0) { - Queue->Uri.replace(0, AllMirrors[i].size(), BaseUri); + Queue->Uri.replace(0, mirror->length(), BaseUri); return; } } @@ -168,15 +245,23 @@ void MirrorMethod::CurrentQueueUriToMirror() bool MirrorMethod::TryNextMirror() { // find current mirror and select next one - for (int i=0; i < AllMirrors.size()-1; i++) + for (vector::const_iterator mirror = AllMirrors.begin(); + mirror != AllMirrors.end(); ++mirror) { - if (Queue->Uri.find(AllMirrors[i]) == 0) - { - Queue->Uri.replace(0, AllMirrors[i].size(), AllMirrors[i+1]); - if (Debug) - clog << "TryNextMirror: " << Queue->Uri << endl; - return true; - } + if (Queue->Uri.find(*mirror) != 0) + continue; + + vector::const_iterator nextmirror = mirror + 1; + if (nextmirror == AllMirrors.end()) + break; + Queue->Uri.replace(0, mirror->length(), *nextmirror); + if (Debug) + clog << "TryNextMirror: " << Queue->Uri << endl; + + // inform parent + UsedMirror = *nextmirror; + Log("Switching mirror"); + return true; } if (Debug) @@ -195,6 +280,13 @@ bool MirrorMethod::InitMirrors() return _error->Error(_("No mirror file '%s' found "), MirrorFile.c_str()); } + if (access(MirrorFile.c_str(), R_OK) != 0) + { + // FIXME: fallback to a default mirror here instead + // and provide a config option to define that default + return _error->Error(_("Can not read mirror file '%s'"), MirrorFile.c_str()); + } + // FIXME: make the mirror selection more clever, do not // just use the first one! // BUT: we can not make this random, the mirror has to be @@ -206,8 +298,18 @@ bool MirrorMethod::InitMirrors() while (!in.eof()) { getline(in, s); - if (s.size() > 0) - AllMirrors.push_back(s); + + // ignore lines that start with # + if (s.find("#") == 0) + continue; + // ignore empty lines + if (s.size() == 0) + continue; + // ignore non http lines + if (s.find("http://") != 0) + continue; + + AllMirrors.push_back(s); } Mirror = AllMirrors[0]; UsedMirror = Mirror; @@ -248,7 +350,7 @@ string MirrorMethod::GetMirrorFileName(string mirror_uri_str) vector::const_iterator I; pkgSourceList list; list.ReadMainList(); - for(I=list.begin(); I != list.end(); I++) + for(I=list.begin(); I != list.end(); ++I) { string uristr = (*I)->GetURI(); if(Debug) @@ -261,6 +363,7 @@ string MirrorMethod::GetMirrorFileName(string mirror_uri_str) if(Debug) std::cerr << "found BaseURI: " << uristr << std::endl; BaseUri = uristr.substr(0,uristr.size()-1); + Dist = (*I)->GetDist(); } } // get new file @@ -298,7 +401,8 @@ bool MirrorMethod::Fetch(FetchItem *Itm) if(Itm->IndexFile && !DownloadedMirrorFile) { Clean(_config->FindDir("Dir::State::mirrors")); - DownloadMirrorFile(Itm->Uri); + if (DownloadMirrorFile(Itm->Uri)) + RandomizeMirrorFile(MirrorFile); } if(AllMirrors.empty()) {