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%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
%% -------------------------------------------------------------------
%%
%% rebar: Erlang Build Tools
%%
%% -------------------------------------------------------------------
-module(rebar_fetch).
-export([lock_source/3,
download_source/3,
needs_update/3]).
-export([format_error/1]).
-include("rebar.hrl").
-include_lib("providers/include/providers.hrl").
-spec lock_source(file:filename_all(), rebar_resource:resource(), rebar_state:t()) ->
rebar_resource:resource() | {error, string()}.
lock_source(AppDir, Source, State) ->
Resources = rebar_state:resources(State),
Module = get_resource_type(Source, Resources),
Module:lock(AppDir, Source).
-spec download_source(file:filename_all(), rebar_resource:resource(), rebar_state:t()) ->
true | {error, any()}.
download_source(AppDir, Source, State) ->
try download_source_(AppDir, Source, State) of
true ->
true;
Error ->
throw(?PRV_ERROR(Error))
catch
C:T ->
?DEBUG("rebar_fetch exception ~p ~p ~p", [C, T, erlang:get_stacktrace()]),
throw(?PRV_ERROR({fetch_fail, Source}))
end.
download_source_(AppDir, Source, State) ->
Resources = rebar_state:resources(State),
Module = get_resource_type(Source, Resources),
TmpDir = ec_file:insecure_mkdtemp(),
AppDir1 = ec_cnv:to_list(AppDir),
case Module:download(TmpDir, Source, State) of
{ok, _} ->
ec_file:mkdir_p(AppDir1),
code:del_path(filename:absname(filename:join(AppDir1, "ebin"))),
ok = rebar_file_utils:rm_rf(filename:absname(AppDir1)),
?DEBUG("Moving checkout ~p to ~p", [TmpDir, filename:absname(AppDir1)]),
ok = rebar_file_utils:mv(TmpDir, filename:absname(AppDir1)),
true;
Error ->
Error
end.
-spec needs_update(file:filename_all(), rebar_resource:resource(), rebar_state:t()) -> boolean() | {error, string()}.
needs_update(AppDir, Source, State) ->
Resources = rebar_state:resources(State),
Module = get_resource_type(Source, Resources),
try
Module:needs_update(AppDir, Source)
catch
_:_ ->
true
end.
format_error({bad_download, CachePath}) ->
io_lib:format("Download of package does not match md5sum from server: ~s", [CachePath]);
format_error({unexpected_hash, CachePath, Expected, Found}) ->
io_lib:format("The checksum for package at ~s (~s) does not match the "
"checksum previously locked (~s). Either unlock or "
"upgrade the package, or make sure you fetched it from "
"the same index from which it was initially fetched.",
[CachePath, Found, Expected]);
format_error({failed_extract, CachePath}) ->
io_lib:format("Failed to extract package: ~s", [CachePath]);
format_error({bad_etag, Source}) ->
io_lib:format("MD5 Checksum comparison failed for: ~s", [Source]);
format_error({fetch_fail, Name, Vsn}) ->
io_lib:format("Failed to fetch and copy dep: ~s-~s", [Name, Vsn]);
format_error({fetch_fail, Source}) ->
io_lib:format("Failed to fetch and copy dep: ~p", [Source]);
format_error({bad_checksum, File}) ->
io_lib:format("Checksum mismatch against tarball in ~s", [File]);
format_error({bad_registry_checksum, File}) ->
io_lib:format("Checksum mismatch against registry in ~s", [File]).
get_resource_type({Type, Location}, Resources) ->
find_resource_module(Type, Location, Resources);
get_resource_type({Type, Location, _}, Resources) ->
find_resource_module(Type, Location, Resources);
get_resource_type({Type, _, _, Location}, Resources) ->
find_resource_module(Type, Location, Resources);
get_resource_type(_, _) ->
rebar_pkg_resource.
find_resource_module(Type, Location, Resources) ->
case lists:keyfind(Type, 1, Resources) of
false ->
case code:which(Type) of
non_existing ->
{error, io_lib:format("Cannot handle dependency ~s.~n"
" No module for resource type ~p", [Location, Type])};
_ ->
Type
end;
{Type, Module} ->
Module
end.
|
