From e9c50064b59de6e9b4167f578c15b0cc04a7d33e Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Mon, 29 Feb 2016 18:15:20 +0100
Subject: Add an HTTP binary cache store

Allowing stuff like

  NIX_REMOTE=https://cache.nixos.org nix-store -qR /nix/store/x1p1gl3a4kkz5ci0nfbayjqlqmczp1kq-geeqie-1.1

or

  NIX_REMOTE=https://cache.nixos.org nix-store --export /nix/store/x1p1gl3a4kkz5ci0nfbayjqlqmczp1kq-geeqie-1.1 | nix-store --import
---
 src/libstore/download.hh | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

(limited to 'src/libstore/download.hh')

diff --git a/src/libstore/download.hh b/src/libstore/download.hh
index 7aec8de73e48..5dd2d2c82dec 100644
--- a/src/libstore/download.hh
+++ b/src/libstore/download.hh
@@ -10,7 +10,8 @@ struct DownloadOptions
 {
     string expectedETag;
     bool verifyTLS{true};
-    bool forceProgress{false};
+    enum { yes, no, automatic } showProgress{yes};
+    bool head{false};
 };
 
 struct DownloadResult
@@ -21,11 +22,25 @@ struct DownloadResult
 
 class Store;
 
-DownloadResult downloadFile(string url, const DownloadOptions & options);
+struct Downloader
+{
+    virtual DownloadResult download(string url, const DownloadOptions & options) = 0;
+
+    Path downloadCached(ref<Store> store, const string & url, bool unpack);
+
+    enum Error { NotFound, Forbidden, Misc };
+};
 
-Path downloadFileCached(ref<Store> store, const string & url, bool unpack);
+ref<Downloader> makeDownloader();
 
-MakeError(DownloadError, Error)
+class DownloadError : public Error
+{
+public:
+    Downloader::Error error;
+    DownloadError(Downloader::Error error, const FormatOrString & fs)
+        : Error(fs), error(error)
+    { }
+};
 
 bool isUri(const string & s);
 
-- 
cgit 1.4.1