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 <apti18n.h>
/*}}}*/
using namespace std;
// Acquire::pkgAcquire - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* We grab some runtime state from the configuration space */
-pkgAcquire::pkgAcquire() : Queues(0), Workers(0), Configs(0), Log(NULL), ToFetch(0),
+pkgAcquire::pkgAcquire() : LockFD(-1), Queues(0), Workers(0), Configs(0), Log(NULL), ToFetch(0),
Debug(_config->FindB("Debug::pkgAcquire",false)),
- Running(false), LockFD(-1)
+ Running(false)
{
string const Mode = _config->Find("Acquire::Queue-Mode","host");
if (strcasecmp(Mode.c_str(),"host") == 0)
if (strcasecmp(Mode.c_str(),"access") == 0)
QueueMode = QueueAccess;
}
-pkgAcquire::pkgAcquire(pkgAcquireStatus *Progress) : Queues(0), Workers(0),
+pkgAcquire::pkgAcquire(pkgAcquireStatus *Progress) : LockFD(-1), Queues(0), Workers(0),
Configs(0), Log(Progress), ToFetch(0),
Debug(_config->FindB("Debug::pkgAcquire",false)),
- Running(false), LockFD(-1)
+ Running(false)
{
string const Mode = _config->Find("Acquire::Queue-Mode","host");
if (strcasecmp(Mode.c_str(),"host") == 0)
string const archivesDir = _config->FindDir("Dir::Cache::Archives");
string const partialArchivesDir = archivesDir + "partial/";
- if (CheckDirectory(_config->FindDir("Dir::State"), partialListDir) == false &&
- CheckDirectory(listDir, partialListDir) == false)
+ if (CreateAPTDirectoryIfNeeded(_config->FindDir("Dir::State"), partialListDir) == false &&
+ CreateAPTDirectoryIfNeeded(listDir, partialListDir) == false)
return _error->Errno("Acquire", _("List directory %spartial is missing."), listDir.c_str());
- if (CheckDirectory(_config->FindDir("Dir::Cache"), partialArchivesDir) == false &&
- CheckDirectory(archivesDir, partialArchivesDir) == false)
+ if (CreateAPTDirectoryIfNeeded(_config->FindDir("Dir::Cache"), partialArchivesDir) == false &&
+ CreateAPTDirectoryIfNeeded(archivesDir, partialArchivesDir) == false)
return _error->Errno("Acquire", _("Archives directory %spartial is missing."), archivesDir.c_str());
if (Lock.empty() == true || _config->FindB("Debug::NoLocking", false) == true)
return true;
}
/*}}}*/
-// Acquire::CheckDirectory - ensure that the given directory exists /*{{{*/
-// ---------------------------------------------------------------------
-/* a small wrapper around CreateDirectory to check if it exists and to
- remove the trailing "/apt/" from the parent directory if needed */
-bool pkgAcquire::CheckDirectory(string const &Parent, string const &Path) const
-{
- if (DirectoryExists(Path) == true)
- return true;
-
- size_t const len = Parent.size();
- if (len > 5 && Parent.find("/apt/", len - 6, 5) == len - 5)
- {
- if (CreateDirectory(Parent.substr(0,len-5), Path) == true)
- return true;
- }
- else if (CreateDirectory(Parent, Path) == true)
- return true;
-
- return false;
-}
- /*}}}*/
// Acquire::~pkgAcquire - Destructor /*{{{*/
// ---------------------------------------------------------------------
/* Free our memory, clean up the queues (destroy the workers) */
/* */
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;
}
}
/*}}}*/
// ---------------------------------------------------------------------
/* 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();
- return U.Access + ':' + U.Host;
+ 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 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;
+
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 ResumeSize = 0;
+ 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;
else
CurrentCPS = ((CurrentBytes - ResumeSize) - LastBytes)/Delta;
LastBytes = CurrentBytes - ResumeSize;
- ElapsedTime = (unsigned long)Delta;
+ ElapsedTime = (unsigned long long)Delta;
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 ETA =
- (unsigned long)((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;
else
CurrentCPS = FetchedBytes/Delta;
LastBytes = CurrentBytes;
- ElapsedTime = (unsigned int)Delta;
+ ElapsedTime = (unsigned long long)Delta;
}
/*}}}*/
// AcquireStatus::Fetched - Called when a byte set has been fetched /*{{{*/
// ---------------------------------------------------------------------
/* This is used to get accurate final transfer rate reporting. */
-void pkgAcquireStatus::Fetched(unsigned long Size,unsigned long Resume)
+void pkgAcquireStatus::Fetched(unsigned long long Size,unsigned long long Resume)
{
FetchedBytes += Size - Resume;
}
projects / apt.git / blobdiff