Acquire - File Acquiration
- The core element for the schedual system is the concept of a named
+ The core element for the schedule system is the concept of a named
queue. Each queue is unique and each queue has a name derived from the
- URI. The degree of paralization can be controled by how the queue
+ URI. The degree of paralization can be controlled by how the queue
name is derived from the URI.
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
+#include <config.h>
+
#include <apt-pkg/acquire.h>
#include <apt-pkg/acquire-item.h>
#include <apt-pkg/acquire-worker.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/fileutl.h>
-#include <apti18n.h>
-
+#include <string>
+#include <vector>
#include <iostream>
#include <sstream>
#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <iomanip>
#include <dirent.h>
#include <sys/time.h>
+#include <sys/select.h>
#include <errno.h>
+#include <sys/stat.h>
+
+#include <apti18n.h>
/*}}}*/
using namespace std;
/* */
void pkgAcquire::Shutdown()
{
- while (Items.size() != 0)
+ while (Items.empty() == false)
{
if (Items[0]->Status == Item::StatFetching)
Items[0]->Status = Item::StatError;
I = Items.begin();
}
else
- I++;
+ ++I;
+ }
+}
+ /*}}}*/
+// Acquire::AbortTransaction - Remove a transaction /*{{{*/
+void pkgAcquire::AbortTransaction(unsigned long TransactionID)
+{
+ if(_config->FindB("Debug::Acquire::Transaction", false) == true)
+ std::clog << "AbortTransaction: " << TransactionID << std::endl;
+
+ std::vector<Item*> Transaction;
+ for (ItemIterator I = Items.begin(); I != Items.end(); ++I)
+ if((*I)->TransactionID == TransactionID)
+ Transaction.push_back(*I);
+
+ for (std::vector<Item*>::iterator I = Transaction.begin();
+ I != Transaction.end(); ++I)
+ {
+ if(_config->FindB("Debug::Acquire::Transaction", false) == true)
+ std::clog << " Cancel: " << (*I)->DestFile << std::endl;
+ //Dequeue(*I);
+ (*I)->Status = pkgAcquire::Item::StatError;
+ }
+}
+ /*}}}*/
+bool pkgAcquire::TransactionHasError(unsigned long TransactionID)
+{
+ std::vector<Item*> Transaction;
+ for (ItemIterator I = Items.begin(); I != Items.end(); ++I)
+ if((*I)->TransactionID == TransactionID)
+ if((*I)->Status == pkgAcquire::Item::StatError ||
+ (*I)->Status == pkgAcquire::Item::StatAuthError)
+ return true;
+
+ return false;
+}
+// Acquire::CommitTransaction - Commit a transaction /*{{{*/
+void pkgAcquire::CommitTransaction(unsigned long TransactionID)
+{
+ if(_config->FindB("Debug::Acquire::Transaction", false) == true)
+ std::clog << "CommitTransaction: " << TransactionID << std::endl;
+
+ std::vector<Item*> Transaction;
+ for (ItemIterator I = Items.begin(); I != Items.end(); ++I)
+ if((*I)->TransactionID == TransactionID)
+ Transaction.push_back(*I);
+
+ // move new files into place *and* remove files that are not
+ // part of the transaction but are still on disk
+ for (std::vector<Item*>::iterator I = Transaction.begin();
+ I != Transaction.end(); ++I)
+ {
+ if((*I)->PartialFile != "")
+ {
+ if(_config->FindB("Debug::Acquire::Transaction", false) == true)
+ std::clog << "mv "
+ << (*I)->PartialFile << " -> "
+ << (*I)->DestFile << std::endl;
+ Rename((*I)->PartialFile, (*I)->DestFile);
+ chmod((*I)->DestFile.c_str(),0644);
+ } else {
+ if(_config->FindB("Debug::Acquire::Transaction", false) == true)
+ std::clog << "rm "
+ << (*I)->DestFile << std::endl;
+ unlink((*I)->DestFile.c_str());
+ }
+ // mark that this transaction is finished
+ (*I)->TransactionID = 0;
}
}
/*}}}*/
+
// Acquire::Add - Add a worker /*{{{*/
// ---------------------------------------------------------------------
/* A list of workers is kept so that the select loop can direct their FD
// ---------------------------------------------------------------------
/* A worker has died. This can not be done while the select loop is running
as it would require that RunFds could handling a changing list state and
- it cant.. */
+ it can't.. */
void pkgAcquire::Remove(Worker *Work)
{
if (Running == true)
{
Queue *I = Queues;
bool Res = false;
- for (; I != 0; I = I->Next)
- Res |= I->Dequeue(Itm);
-
if (Debug == true)
clog << "Dequeuing " << Itm->DestFile << endl;
+
+ for (; I != 0; I = I->Next)
+ {
+ if (I->Dequeue(Itm))
+ {
+ Res = true;
+ if (Debug == true)
+ clog << "Dequeued from " << I->Name << endl;
+ }
+ }
+
if (Res == true)
ToFetch--;
}
/* Single-Instance methods get exactly one queue per URI. This is
also used for the Access queue method */
if (Config->SingleInstance == true || QueueMode == QueueAccess)
- return U.Access;
+ return U.Access;
+
+ string AccessSchema = U.Access + ':',
+ FullQueueName = AccessSchema + U.Host;
+ unsigned int Instances = 0, SchemaLength = AccessSchema.length();
+
+ Queue *I = Queues;
+ for (; I != 0; I = I->Next) {
+ // if the queue already exists, re-use it
+ if (I->Name == FullQueueName)
+ return FullQueueName;
+
+ if (I->Name.compare(0, SchemaLength, AccessSchema) == 0)
+ Instances++;
+ }
+
+ if (Debug) {
+ clog << "Found " << Instances << " instances of " << U.Access << endl;
+ }
+
+ if (Instances >= (unsigned int)_config->FindI("Acquire::QueueHost::Limit",10))
+ return U.Access;
- return U.Access + ':' + U.Host;
+ return FullQueueName;
}
/*}}}*/
// Acquire::GetConfig - Fetch the configuration information /*{{{*/
I->Shutdown(false);
// Shut down the items
- for (ItemIterator I = Items.begin(); I != Items.end(); I++)
+ for (ItemIterator I = Items.begin(); I != Items.end(); ++I)
(*I)->Finished();
if (_error->PendingError())
pkgAcquire::Worker *pkgAcquire::WorkerStep(Worker *I)
{
return I->NextAcquire;
-};
+}
/*}}}*/
// Acquire::Clean - Cleans a directory /*{{{*/
// ---------------------------------------------------------------------
if it is part of the download set. */
bool pkgAcquire::Clean(string Dir)
{
+ // non-existing directories are by definition clean…
+ if (DirectoryExists(Dir) == false)
+ return true;
+
+ if(Dir == "/")
+ return _error->Error(_("Clean of %s is not supported"), Dir.c_str());
+
DIR *D = opendir(Dir.c_str());
if (D == 0)
return _error->Errno("opendir",_("Unable to read %s"),Dir.c_str());
// Look in the get list
ItemCIterator I = Items.begin();
- for (; I != Items.end(); I++)
+ for (; I != Items.end(); ++I)
if (flNotDir((*I)->DestFile) == Dir->d_name)
break;
// Acquire::TotalNeeded - Number of bytes to fetch /*{{{*/
// ---------------------------------------------------------------------
/* This is the total number of bytes needed */
-unsigned long long pkgAcquire::TotalNeeded()
+APT_PURE unsigned long long pkgAcquire::TotalNeeded()
{
unsigned long long Total = 0;
- for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); I++)
+ for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); ++I)
Total += (*I)->FileSize;
return Total;
}
// Acquire::FetchNeeded - Number of bytes needed to get /*{{{*/
// ---------------------------------------------------------------------
/* This is the number of bytes that is not local */
-unsigned long long pkgAcquire::FetchNeeded()
+APT_PURE unsigned long long pkgAcquire::FetchNeeded()
{
unsigned long long Total = 0;
- for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); I++)
+ for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); ++I)
if ((*I)->Local == false)
Total += (*I)->FileSize;
return Total;
// Acquire::PartialPresent - Number of partial bytes we already have /*{{{*/
// ---------------------------------------------------------------------
/* This is the number of bytes that is not local */
-unsigned long long pkgAcquire::PartialPresent()
+APT_PURE unsigned long long pkgAcquire::PartialPresent()
{
unsigned long long Total = 0;
- for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); I++)
+ for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); ++I)
if ((*I)->Local == false)
Total += (*I)->PartialSize;
return Total;
// AcquireStatus::pkgAcquireStatus - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
-pkgAcquireStatus::pkgAcquireStatus() : Update(true), MorePulses(false)
+pkgAcquireStatus::pkgAcquireStatus() : d(NULL), Update(true), MorePulses(false)
{
Start();
}
// Compute the total number of bytes to fetch
unsigned int Unknown = 0;
unsigned int Count = 0;
- for (pkgAcquire::ItemCIterator I = Owner->ItemsBegin(); I != Owner->ItemsEnd();
- I++, Count++)
+ bool UnfetchedReleaseFiles = false;
+ for (pkgAcquire::ItemCIterator I = Owner->ItemsBegin();
+ I != Owner->ItemsEnd();
+ ++I, ++Count)
{
TotalItems++;
if ((*I)->Status == pkgAcquire::Item::StatDone)
- CurrentItems++;
+ ++CurrentItems;
// Totally ignore local items
if ((*I)->Local == true)
continue;
+ // see if the method tells us to expect more
+ TotalItems += (*I)->ExpectedAdditionalItems;
+
+ // check if there are unfetched Release files
+ if ((*I)->Complete == false && (*I)->ExpectedAdditionalItems > 0)
+ UnfetchedReleaseFiles = true;
+
TotalBytes += (*I)->FileSize;
if ((*I)->Complete == true)
CurrentBytes += (*I)->FileSize;
if ((*I)->FileSize == 0 && (*I)->Complete == false)
- Unknown++;
+ ++Unknown;
}
// Compute the current completion
unsigned long long ResumeSize = 0;
for (pkgAcquire::Worker *I = Owner->WorkersBegin(); I != 0;
I = Owner->WorkerStep(I))
+ {
if (I->CurrentItem != 0 && I->CurrentItem->Owner->Complete == false)
{
CurrentBytes += I->CurrentSize;
I->CurrentItem->Owner->Complete == false)
TotalBytes += I->CurrentSize;
}
+ }
// Normalize the figures and account for unknown size downloads
if (TotalBytes <= 0)
// Wha?! Is not supposed to happen.
if (CurrentBytes > TotalBytes)
CurrentBytes = TotalBytes;
+
+ // debug
+ if (_config->FindB("Debug::acquire::progress", false) == true)
+ std::clog << " Bytes: "
+ << SizeToStr(CurrentBytes) << " / " << SizeToStr(TotalBytes)
+ << std::endl;
// Compute the CPS
struct timeval NewTime;
Time = NewTime;
}
+ // calculate the percentage, if we have too little data assume 1%
+ if (TotalBytes > 0 && UnfetchedReleaseFiles)
+ Percent = 0;
+ else
+ // use both files and bytes because bytes can be unreliable
+ Percent = (0.8 * (CurrentBytes/float(TotalBytes)*100.0) +
+ 0.2 * (CurrentItems/float(TotalItems)*100.0));
+
int fd = _config->FindI("APT::Status-Fd",-1);
if(fd > 0)
{
char msg[200];
long i = CurrentItems < TotalItems ? CurrentItems + 1 : CurrentItems;
- unsigned long long const ETA = (TotalBytes - CurrentBytes) / CurrentCPS;
+ unsigned long long ETA = 0;
+ if(CurrentCPS > 0)
+ ETA = (TotalBytes - CurrentBytes) / CurrentCPS;
// only show the ETA if it makes sense
if (ETA > 0 && ETA < 172800 /* two days */ )
else
snprintf(msg,sizeof(msg), _("Retrieving file %li of %li"), i, TotalItems);
-
-
// build the status str
status << "dlstatus:" << i
- << ":" << (CurrentBytes/float(TotalBytes)*100.0)
- << ":" << msg
- << endl;
- write(fd, status.str().c_str(), status.str().size());
+ << ":" << std::setprecision(3) << Percent
+ << ":" << msg
+ << endl;
+
+ std::string const dlstatus = status.str();
+ FileFd::Write(fd, dlstatus.c_str(), dlstatus.size());
}
return true;
projects / apt.git / blobdiff