lix/src/libstore/binary-cache-store.hh
Eelco Dolstra 2040240e23
Add a Config class to simplify adding configuration settings
The typical use is to inherit Config and add Setting<T> members:

  class MyClass : private Config
  {
    Setting<int> foo{this, 123, "foo", "the number of foos to use"};
    Setting<std::string> bar{this, "blabla", "bar", "the name of the bar"};

    MyClass() : Config(readConfigFile("/etc/my-app.conf"))
    {
      std::cout << foo << "\n"; // will print 123 unless overriden
    }
  };

Currently, this is used by Store and its subclasses for store
parameters. You now get a warning if you specify a non-existant store
parameter in a store URI.
2017-04-13 16:03:31 +02:00

134 lines
3.5 KiB
C++

#pragma once
#include "crypto.hh"
#include "store-api.hh"
#include "pool.hh"
#include <atomic>
namespace nix {
struct NarInfo;
class BinaryCacheStore : public Store
{
public:
const Setting<std::string> compression{this, "xz", "compression", "NAR compression method ('xz', 'bzip2', or 'none')"};
const Setting<bool> writeNARListing{this, false, "write-nar-listing", "whether to write a JSON file listing the files in each NAR"};
const Setting<Path> secretKeyFile{this, "", "secret-key", "path to secret key used to sign the binary cache"};
private:
std::unique_ptr<SecretKey> secretKey;
protected:
BinaryCacheStore(const Params & params);
[[noreturn]] void notImpl();
public:
virtual bool fileExists(const std::string & path) = 0;
virtual void upsertFile(const std::string & path,
const std::string & data,
const std::string & mimeType) = 0;
/* Return the contents of the specified file, or null if it
doesn't exist. */
virtual void getFile(const std::string & path,
std::function<void(std::shared_ptr<std::string>)> success,
std::function<void(std::exception_ptr exc)> failure) = 0;
std::shared_ptr<std::string> getFile(const std::string & path);
protected:
bool wantMassQuery_ = false;
int priority = 50;
public:
virtual void init();
private:
std::string narMagic;
std::string narInfoFileFor(const Path & storePath);
public:
bool isValidPathUncached(const Path & path) override;
PathSet queryAllValidPaths() override
{ notImpl(); }
void queryPathInfoUncached(const Path & path,
std::function<void(std::shared_ptr<ValidPathInfo>)> success,
std::function<void(std::exception_ptr exc)> failure) override;
void queryReferrers(const Path & path,
PathSet & referrers) override
{ notImpl(); }
PathSet queryDerivationOutputs(const Path & path) override
{ notImpl(); }
StringSet queryDerivationOutputNames(const Path & path) override
{ notImpl(); }
Path queryPathFromHashPart(const string & hashPart) override
{ notImpl(); }
bool wantMassQuery() override { return wantMassQuery_; }
void addToStore(const ValidPathInfo & info, const ref<std::string> & nar,
bool repair, bool dontCheckSigs,
std::shared_ptr<FSAccessor> accessor) override;
Path addToStore(const string & name, const Path & srcPath,
bool recursive, HashType hashAlgo,
PathFilter & filter, bool repair) override;
Path addTextToStore(const string & name, const string & s,
const PathSet & references, bool repair) override;
void narFromPath(const Path & path, Sink & sink) override;
void buildPaths(const PathSet & paths, BuildMode buildMode) override
{ notImpl(); }
BuildResult buildDerivation(const Path & drvPath, const BasicDerivation & drv,
BuildMode buildMode) override
{ notImpl(); }
void ensurePath(const Path & path) override
{ notImpl(); }
void addTempRoot(const Path & path) override
{ notImpl(); }
void addIndirectRoot(const Path & path) override
{ notImpl(); }
Roots findRoots() override
{ notImpl(); }
void collectGarbage(const GCOptions & options, GCResults & results) override
{ notImpl(); }
ref<FSAccessor> getFSAccessor() override;
void addSignatures(const Path & storePath, const StringSet & sigs) override
{ notImpl(); }
std::shared_ptr<std::string> getBuildLog(const Path & path) override;
};
}