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/configuration.h>
#include <apt-pkg/error.h>
#include <apt-pkg/strutl.h>
-
-#include <apti18n.h>
+#include <apt-pkg/fileutl.h>
#include <iostream>
#include <sstream>
#include <dirent.h>
#include <sys/time.h>
#include <errno.h>
-#include <sys/stat.h>
+
+#include <apti18n.h>
/*}}}*/
using namespace std;
// Acquire::pkgAcquire - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* We grab some runtime state from the configuration space */
-pkgAcquire::pkgAcquire(pkgAcquireStatus *Log) : Log(Log)
+pkgAcquire::pkgAcquire() : LockFD(-1), Queues(0), Workers(0), Configs(0), Log(NULL), ToFetch(0),
+ Debug(_config->FindB("Debug::pkgAcquire",false)),
+ Running(false)
{
- Queues = 0;
- Configs = 0;
- Workers = 0;
- ToFetch = 0;
- Running = false;
-
- string Mode = _config->Find("Acquire::Queue-Mode","host");
+ string const Mode = _config->Find("Acquire::Queue-Mode","host");
+ if (strcasecmp(Mode.c_str(),"host") == 0)
+ QueueMode = QueueHost;
+ if (strcasecmp(Mode.c_str(),"access") == 0)
+ QueueMode = QueueAccess;
+}
+pkgAcquire::pkgAcquire(pkgAcquireStatus *Progress) : LockFD(-1), Queues(0), Workers(0),
+ Configs(0), Log(Progress), ToFetch(0),
+ Debug(_config->FindB("Debug::pkgAcquire",false)),
+ Running(false)
+{
+ string const Mode = _config->Find("Acquire::Queue-Mode","host");
if (strcasecmp(Mode.c_str(),"host") == 0)
QueueMode = QueueHost;
if (strcasecmp(Mode.c_str(),"access") == 0)
- QueueMode = QueueAccess;
+ QueueMode = QueueAccess;
+ Setup(Progress, "");
+}
+ /*}}}*/
+// Acquire::Setup - Delayed Constructor /*{{{*/
+// ---------------------------------------------------------------------
+/* Do everything needed to be a complete Acquire object and report the
+ success (or failure) back so the user knows that something is wrong… */
+bool pkgAcquire::Setup(pkgAcquireStatus *Progress, string const &Lock)
+{
+ Log = Progress;
- Debug = _config->FindB("Debug::pkgAcquire",false);
-
- // This is really a stupid place for this
- struct stat St;
- if (stat((_config->FindDir("Dir::State::lists") + "partial/").c_str(),&St) != 0 ||
- S_ISDIR(St.st_mode) == 0)
- _error->Error(_("Lists directory %spartial is missing."),
- _config->FindDir("Dir::State::lists").c_str());
- if (stat((_config->FindDir("Dir::Cache::Archives") + "partial/").c_str(),&St) != 0 ||
- S_ISDIR(St.st_mode) == 0)
- _error->Error(_("Archive directory %spartial is missing."),
- _config->FindDir("Dir::Cache::Archives").c_str());
+ // check for existence and possibly create auxiliary directories
+ string const listDir = _config->FindDir("Dir::State::lists");
+ string const partialListDir = listDir + "partial/";
+ string const archivesDir = _config->FindDir("Dir::Cache::Archives");
+ string const partialArchivesDir = archivesDir + "partial/";
+
+ 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 (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;
+
+ // Lock the directory this acquire object will work in
+ LockFD = GetLock(flCombine(Lock, "lock"));
+ if (LockFD == -1)
+ return _error->Error(_("Unable to lock directory %s"), Lock.c_str());
+
+ return true;
}
/*}}}*/
// Acquire::~pkgAcquire - Destructor /*{{{*/
pkgAcquire::~pkgAcquire()
{
Shutdown();
-
+
+ if (LockFD != -1)
+ close(LockFD);
+
while (Configs != 0)
{
MethodConfig *Jnk = Configs;
/* */
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;
- return U.Access + ':' + U.Host;
+ 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 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 */
-double pkgAcquire::TotalNeeded()
+unsigned long long pkgAcquire::TotalNeeded()
{
- double Total = 0;
- for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); I++)
+ unsigned long long Total = 0;
+ 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 */
-double pkgAcquire::FetchNeeded()
+unsigned long long pkgAcquire::FetchNeeded()
{
- double Total = 0;
- for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); I++)
+ unsigned long long Total = 0;
+ 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 */
-double pkgAcquire::PartialPresent()
+unsigned long long pkgAcquire::PartialPresent()
{
- double Total = 0;
- for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); I++)
+ unsigned long long Total = 0;
+ 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();
}
unsigned int Unknown = 0;
unsigned int Count = 0;
for (pkgAcquire::ItemCIterator I = Owner->ItemsBegin(); I != Owner->ItemsEnd();
- I++, Count++)
+ ++I, ++Count)
{
TotalItems++;
if ((*I)->Status == pkgAcquire::Item::StatDone)
- CurrentItems++;
+ ++CurrentItems;
// Totally ignore local items
if ((*I)->Local == true)
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)
else
CurrentCPS = ((CurrentBytes - ResumeSize) - LastBytes)/Delta;
LastBytes = CurrentBytes - ResumeSize;
- ElapsedTime = (unsigned long)Delta;
+ ElapsedTime = (unsigned long long)Delta;
Time = NewTime;
}
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 */ )
<< ":" << (CurrentBytes/float(TotalBytes)*100.0)
<< ":" << msg
<< endl;
- write(fd, status.str().c_str(), status.str().size());
+
+ 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;
}
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