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ssh-store: add remote-store and remote-program query params

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Brings the functionality of ssh-ng:// in sync with the legacy ssh://
implementation.  Specifying the remote store uri enables various useful
things. eg.

    $ nix copy --to ssh-ng://cache?remote-store=file://mnt/cache --all
This commit is contained in:
Daiderd Jordan 2020-02-03 23:18:34 +01:00
parent 8b09105db3
commit 8745c63d3c
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GPG key ID: D02435D05B810C96
1 changed files with 5 additions and 1 deletions
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6
src/libstore/ssh-store.cc
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@ -16,6 +16,8 @@ public:
const Setting<Path> sshKey{(Store*) this, "", "ssh-key", "path to an SSH private key"};
const Setting<bool> compress{(Store*) this, false, "compress", "whether to compress the connection"};
const Setting<Path> remoteProgram{this, "nix-daemon", "remote-program", "path to the nix-daemon executable on the remote system"};
const Setting<std::string> remoteStore{this, "", "remote-store", "URI of the store on the remote system"};
SSHStore(const std::string & host, const Params & params)
: Store(params)
@ -82,7 +84,9 @@ ref<FSAccessor> SSHStore::getFSAccessor()
ref<RemoteStore::Connection> SSHStore::openConnection()
{
auto conn = make_ref<Connection>();
conn->sshConn = master.startCommand("nix-daemon --stdio");
conn->sshConn = master.startCommand(
fmt("%s --stdio", remoteProgram)
+ (remoteStore.get() == "" ? "" : " --store " + shellEscape(remoteStore.get())));
conn->to = FdSink(conn->sshConn->in.get());
conn->from = FdSource(conn->sshConn->out.get());
initConnection(*conn);