we now spy keyblocks for spends, need to test but probably close to working

src/fd_gridsd.erl

@@ -21,15 +21,6 @@
 
 -include("$zx_include/zx_logger.hrl").
 
-%% for craig's autism
-%-type grids_get_response() :: #{"grids"      := 1,
-%                                "chain"      := "gajumaru",
-%                                "network_id" := "groot.testnet",
-%                                "type"       := "tx",
-%                                "public_id"  := false,
-%                                "payload"    := string()}.
-%
-% semantic type for hex encoding of a random binary string
 -type hex() :: binary().
 -define(SEC, 1).
 -define(MIN, 60*SEC).

src/fd_hz.erl

@@ -0,0 +1,84 @@
+% @doc hz helper functions
+-module(fd_hz).
+
+-export_type([
+]).
+
+-export([
+    txs_current/0,
+    txs_since_height/1,
+    txs_minus/1,
+    txs_from_to/2,
+    current_height/0,
+    txs_of_height/1,
+    mhs_of_height/1,
+    txs_of_mh/1,
+    filter_spends/1,
+    filter_spend/1,
+    spend_info/1,
+    test/0
+]).
+
+
+-spec test() -> no_return().
+
+test() ->
+    io:format("~tp~n", [hz:gen_current()]),
+    io:format("~tp~n", [hz:kb_current()]),
+    ok.
+
+
+
+txs_current() ->
+    H = current_height(),
+    txs_of_height(H).
+
+
+txs_since_height(H) ->
+    txs_from_to(H, current_height()).
+
+
+txs_minus(N) ->
+    H = current_height(),
+    L = H - N,
+    txs_from_to(L, H).
+
+
+txs_from_to(Min, Max) when Min =< Max ->
+    lists:append([txs_of_height(H) || H <- lists:seq(Min, Max)]);
+txs_from_to(Min, Max) when Min > Max ->
+    [].
+
+
+current_height() ->
+    {ok, H} = hz:kb_current_height(),
+    H.
+
+
+txs_of_height(Height) ->
+    lists:append([txs_of_mh(MH) || MH <- mhs_of_height(Height)]).
+
+
+-spec mhs_of_height(Height :: pos_integer()) -> term().
+mhs_of_height(Height) ->
+    {ok, #{"micro_blocks" := MHs}} = hz:gen_by_height(Height),
+    MHs.
+
+
+txs_of_mh(MH) ->
+    {ok, TXs} = hz:mb_txs(MH),
+    TXs.
+
+
+filter_spends(TXs) ->
+    lists:filtermap(fun filter_spend/1, TXs).
+
+filter_spend(#{"tx" := TX = #{"type" := "SpendTx"}}) -> {true, spend_info(TX)};
+filter_spend(_)                                      -> false.
+
+
+spend_info(#{"type" := "SpendTx",
+             "recipient_id" := Recipient,
+             "amount" := Amount,
+             "payload" := Payload}) ->
+    {sp, Recipient, Amount, Payload}.

src/fd_spy.erl

@@ -35,7 +35,8 @@
 -type search_pattern() :: #sp{}.
 
 -record(s,
-        {searching_for = [] :: search_pattern()}).
+        {last_height_seen = none :: none | integer(),
+         searching_for    = []   :: [search_pattern()]}).
 
 -type state() :: #s{}.
 
@@ -73,6 +74,8 @@ start_link() ->
 
 init(none) ->
     tell("starting fd_spy"),
+    hz:chain_nodes(fewd:chain_nodes()),
+    erlang:send_after(1000, self(), check_chain),
     InitState = #s{},
     {ok, InitState}.
 
@@ -102,6 +105,10 @@ handle_cast(Unexpected, State) ->
 
 
 
+handle_info(check_chain, State) ->
+    NewState = do_check_chain(State),
+    erlang:send_after(1000, self(), check_chain),
+    {noreply, NewState};
 handle_info(Unexpected, State) ->
     tell("~tp: unexpected info: ~tp", [?MODULE, Unexpected]),
     {noreply, State}.
@@ -122,6 +129,35 @@ terminate(_, _) ->
 %% internals
 %%-----------------------------------------------------------------------------
 
+do_check_chain(State = #s{last_height_seen = none}) ->
+    case hz:kb_current_height() of
+        {ok, Max} ->
+            hh(Max-1, Max, State);
+        Error     ->
+            tell("~tp hz error: ~tp", [?MODULE, Error]),
+            State
+    end;
+do_check_chain(State = #s{last_height_seen = Min}) ->
+    case hz:kb_current_height() of
+        {ok, Max} ->
+            hh(Min, Max, State);
+        Error     ->
+            tell("~tp hz error: ~tp", [?MODULE, Error]),
+            State
+    end.
+
+% handle height
+hh(PrevHeight, NewHeight, State) when PrevHeight < NewHeight ->
+    tell("~tp cool: PrevHeight=~tp, NewHeight=~tp", [?MODULE, PrevHeight, NewHeight]),
+    Spends = fd_hz:filter_spends(fd_hz:txs_from_to(PrevHeight + 1, NewHeight)),
+    tell("~tp spends: ~tp", [?MODULE, Spends]),
+    NewState = State#s{last_height_seen = NewHeight},
+    NewState;
+hh(PrevHeight, NewHeight, State) when PrevHeight >= NewHeight ->
+    log(info, "~tp lame: PrevHeight=~tp, NewHeight=~tp", [?MODULE, PrevHeight, NewHeight]),
+    State.
+
+
 -spec do_reg(Recipient, Amount, Payload, State) -> {Reply, NewState}
     when Recipient :: pubkey32(),
          Amount    :: pos_integer(),

src/fd_sup.erl

@@ -60,5 +60,5 @@ init([]) ->
                  5000,
                  supervisor,
                  [fd_httpd]},
-    Children  = [GridsD, WFCd, Httpd],
+    Children  = [Spy, GridsD, WFCd, Httpd],
     {ok, {RestartStrategy, Children}}.

src/fewd.erl

@@ -9,13 +9,19 @@
 -copyright("Peter Harpending <peterharpending@qpq.swiss>").
 -license("BSD-2-Clause-FreeBSD").
 
--export([url/0, host/0, network_id/0, pubkey/0, akstr/0]).
+-export([chain_nodes/0, url/0, host/0, network_id/0, pubkey/0, akstr/0]).
 -export([listen/1, ignore/0]).
 -export([start/2, stop/1]).
 
 -include("$zx_include/zx_logger.hrl").
 
 
+%% for testing: use mainnet
+%chain_nodes() ->
+%    [{"tsuriai.jp", 3013}].
+chain_nodes() ->
+    [{"tsuriai.jp", 4013}].
+
 url()        -> "http://" ++ host().
 host()       -> "localhost:8000".
 network_id() -> "groot.testnet".

zomp.meta

@@ -5,12 +5,18 @@
 {prefix,"fd"}.
 {desc,"Front End Web Dev in Erlang stuff"}.
 {package_id,{"otpr","fewd",{0,2,0}}}.
-{deps,[{"otpr","hakuzaru",{0,7,0}},
+{deps,[{"otpr","hakuzaru",{0,8,3}},
-       {"otpr","qr",{0,1,0}},
+            {"otpr","sophia",{9,0,0}},
             {"otpr","gmserialization",{0,1,3}},
                 {"otpr","eblake2",{1,0,1}},
                 {"otpr","base58",{0,1,1}},
-       {"otpr","zj",{1,1,2}}]}.
+            {"otpr","gmbytecode",{3,4,1}},
+            {"otpr","base58",{0,1,1}},
+            {"otpr","eblake2",{1,0,1}},
+            {"otpr","ec_utils",{1,0,0}},
+            {"otpr","zj",{1,1,2}},
+            {"otpr","getopt",{1,0,2}},
+       {"otpr","qr",{0,1,0}}]}.
 {key_name,none}.
 {a_email,"peterharpending@qpq.swiss"}.
 {c_email,"peterharpending@qpq.swiss"}.