Fix cache_dir() problem, made it configurable

src/gmhc_eureka.erl

@@ -1,9 +1,12 @@
 -module(gmhc_eureka).
--vsn("0.6.1").
+-vsn("0.8.3").
 
 -export([get_pool_address/0]).
 -export([cache_good_address/1,
-         invalidate_cache/0]).
+         invalidate_cache/0,
+         cached_address/0,
+         cache_filename/0,
+         cache_dir/0]).
 
 -include_lib("kernel/include/logger.hrl").
 -include("gmhc_events.hrl").
@@ -99,10 +102,27 @@ cache_filename() ->
     cache_filename(cache_info()).
 
 cache_filename(#{network := Network, pubkey := Pubkey}) ->
-    Path = filename:join(setup:data_dir(), Network),
+    Path = filename:join(cache_dir(), Network),
     <<"ak_", PKShort:8/binary, _/binary>> = Pubkey,
     filename:join(Path, "gmhc_eureka." ++ binary_to_list(PKShort) ++ ".cache").
 
+cache_dir() ->
+    case gmconfig:find_config([<<"cache_dir">>]) of
+        {ok, D} ->
+            D;
+        undefined ->
+            case setup_zomp:is_zomp_context() of
+                true ->
+                    cache_dir_zomp();
+                false ->
+                    filename:join(setup:data_dir(), "gmhive.cache")
+            end
+    end.
+
+cache_dir_zomp() ->
+    #{package_id := {Realm, App, _}} = zx_daemon:meta(),
+    filename:join(zx_lib:ppath(var, {Realm, App}), "gmhive.cache").
+
 get_pool_address_() ->
     case gmconfig:find_config([<<"pool_admin">>, <<"url">>], [user_config]) of
         {ok, URL0} ->