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@@ -28,7 +28,7 @@
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-export([remove/2, remove/3]).
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-export([tombstone/2]).
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-export([reset/2, reset/3]).
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--export([dump_schema/2]).
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+-export([dump_schema/2, reformat_schema_dump/1]).
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-export([schema_module/0]).
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%% TODO: move to emqx_dashboard when we stop building api schema at build time
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@@ -180,9 +180,263 @@ gen_schema_json(Dir, SchemaModule, Lang) ->
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include_importance_up_from => IncludeImportance,
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desc_resolver => make_desc_resolver(Lang)
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},
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- JsonMap = hocon_schema_json:gen(SchemaModule, Opts),
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- IoData = emqx_utils_json:encode(JsonMap, [pretty, force_utf8]),
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- ok = file:write_file(SchemaJsonFile, IoData).
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+ StructsJsonArray = hocon_schema_json:gen(SchemaModule, Opts),
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+ IoData = emqx_utils_json:encode(StructsJsonArray, [pretty, force_utf8]),
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+ ok = file:write_file(SchemaJsonFile, IoData),
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+ ok = gen_preformat_md_json_files(Dir, StructsJsonArray, Lang).
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+
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+gen_preformat_md_json_files(Dir, StructsJsonArray, Lang) ->
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+ NestedStruct = reformat_schema_dump(StructsJsonArray),
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+ %% write to files
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+ NestedJsonFile = filename:join([Dir, "schmea-v2-" ++ Lang ++ ".json"]),
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+ io:format(user, "===< Generating: ~s~n", [NestedJsonFile]),
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+ ok = file:write_file(
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+ NestedJsonFile, emqx_utils_json:encode(NestedStruct, [pretty, force_utf8])
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+ ),
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+ ok.
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+
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+%% @doc This function is exported for scripts/schema-dump-reformat.escript
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+reformat_schema_dump(StructsJsonArray0) ->
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+ %% prepare
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+ StructsJsonArray = deduplicate_by_full_name(StructsJsonArray0),
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+ #{fields := RootFields} = hd(StructsJsonArray),
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+ RootNames0 = lists:map(fun(#{name := RootName}) -> RootName end, RootFields),
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+ RootNames = lists:map(fun to_bin/1, RootNames0),
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+ %% reformat
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+ [Root | FlatStructs0] = lists:map(
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+ fun(Struct) -> gen_flat_doc(RootNames, Struct) end, StructsJsonArray
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+ ),
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+ FlatStructs = [Root#{text => <<"root">>, hash => <<"root">>} | FlatStructs0],
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+ gen_nested_doc(FlatStructs).
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+
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+deduplicate_by_full_name(Structs) ->
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+ deduplicate_by_full_name(Structs, #{}, []).
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+
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+deduplicate_by_full_name([], _Seen, Acc) ->
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+ lists:reverse(Acc);
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+deduplicate_by_full_name([#{full_name := FullName} = H | T], Seen, Acc) ->
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+ case maps:get(FullName, Seen, false) of
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+ false ->
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+ deduplicate_by_full_name(T, Seen#{FullName => H}, [H | Acc]);
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+ H ->
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+ %% Name clash, but identical, ignore
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+ deduplicate_by_full_name(T, Seen, Acc);
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+ _Different ->
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+ %% ADD NAMESPACE!
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+ throw({duplicate_full_name, FullName})
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+ end.
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+
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+%% Ggenerate nested docs from root struct.
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+%% Due to the fact that the same struct can be referenced by multiple fields,
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+%% we need to generate a unique nested doc for each reference.
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+%% The unique path to each type and is of the below format:
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+%% - A a path starts either with 'T-' or 'V-'. T stands for type, V stands for value.
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+%% - A path is a list of strings delimited by '-'.
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+%% - The letter S is used to separate struct name from field name.
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+%% - Field names are however NOT denoted by a leading 'F-'.
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+%% For example:
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+%% - T-root: the root struct;
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+%% - T-foo-S-footype: the struct named "footype" in the foo field of root struct;
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+%% - V-foo-S-footype-bar: the field named "bar" in the struct named "footype" in the foo field of root struct
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+gen_nested_doc(Structs) ->
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+ KeyByFullName = lists:foldl(
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+ fun(#{hash := FullName} = Struct, Acc) ->
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+ maps:put(FullName, Struct, Acc)
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+ end,
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+ #{},
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+ Structs
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+ ),
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+ FindFn = fun(Hash) -> maps:get(Hash, KeyByFullName) end,
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+ gen_nested_doc(hd(Structs), FindFn, []).
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+
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+gen_nested_doc(#{fields := Fields} = Struct, FindFn, Path) ->
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+ TypeAnchor = make_type_anchor(Path),
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+ ValueAnchor = fun(FieldName) -> make_value_anchor(Path, FieldName) end,
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+ NewFields = lists:map(
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+ fun(#{text := Name} = Field) ->
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+ NewField = expand_field(Field, FindFn, Path),
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+ NewField#{hash => ValueAnchor(Name)}
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+ end,
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+ Fields
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+ ),
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+ Struct#{
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+ fields => NewFields,
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+ hash => TypeAnchor
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+ }.
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+
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+%% Make anchor for type.
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+%% Start with "T-" to distinguish from value anchor.
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+make_type_anchor([]) ->
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+ <<"T-root">>;
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+make_type_anchor(Path) ->
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+ to_bin(["T-", lists:join("-", lists:reverse(Path))]).
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+
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+%% Value anchor is used to link to the field's struct.
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+%% Start with "V-" to distinguish from type anchor.
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+make_value_anchor(Path, FieldName) ->
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+ to_bin(["V-", join_path_hash(Path, FieldName)]).
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+
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+%% Make a globally unique "hash" (the http anchor) for each struct field.
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+join_path_hash([], Name) ->
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+ Name;
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+join_path_hash(Path, Name) ->
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+ to_bin(lists:join("-", lists:reverse([Name | Path]))).
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+
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+%% Expand field's struct reference to nested doc.
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+expand_field(#{text := Name, refs := References} = Field, FindFn, Path) ->
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+ %% Add struct type name in path to make it unique.
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+ NewReferences = lists:map(
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+ fun(#{text := StructName} = Ref) ->
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+ expand_ref(Ref, FindFn, [StructName, "S", Name | Path])
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+ end,
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+ References
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+ ),
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+ Field#{refs => NewReferences};
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+expand_field(Field, _FindFn, _Path) ->
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+ %% No reference, no need to expand.
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+ Field.
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+
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+expand_ref(#{hash := FullName}, FindFn, Path) ->
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+ Struct = FindFn(FullName),
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+ gen_nested_doc(Struct, FindFn, Path).
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+
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+%% generate flat docs for each struct.
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+%% using references to link to other structs.
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+gen_flat_doc(RootNames, #{full_name := FullName, fields := Fields} = S) ->
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+ ShortName = short_name(FullName),
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+ case is_missing_namespace(ShortName, to_bin(FullName), RootNames) of
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+ true ->
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+ io:format(standard_error, "WARN: no_namespace_for: ~s~n", [FullName]);
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+ false ->
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+ ok
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+ end,
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+ #{
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+ text => short_name(FullName),
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+ hash => format_hash(FullName),
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+ doc => maps:get(desc, S, <<"">>),
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+ fields => format_fields(Fields)
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+ }.
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+
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+format_fields([]) ->
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+ [];
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+format_fields([Field | Fields]) ->
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+ [format_field(Field) | format_fields(Fields)].
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+
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+format_field(#{name := Name, aliases := Aliases, type := Type} = F) ->
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+ L = [
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+ {text, Name},
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+ {type, format_type(Type)},
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+ {refs, format_refs(Type)},
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+ {aliases,
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+ case Aliases of
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+ [] -> undefined;
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+ _ -> Aliases
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+ end},
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+ {default, maps:get(hocon, maps:get(default, F, #{}), undefined)},
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+ {doc, maps:get(desc, F, undefined)}
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+ ],
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+ maps:from_list([{K, V} || {K, V} <- L, V =/= undefined]).
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+
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+format_refs(Type) ->
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+ References = find_refs(Type),
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+ case lists:map(fun format_ref/1, References) of
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+ [] -> undefined;
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+ L -> L
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+ end.
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+
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+format_ref(FullName) ->
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+ #{text => short_name(FullName), hash => format_hash(FullName)}.
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+
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+find_refs(Type) ->
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+ lists:reverse(find_refs(Type, [])).
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+
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+%% go deep into union, array, and map to find references
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+find_refs(#{kind := union, members := Members}, Acc) ->
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+ lists:foldl(fun find_refs/2, Acc, Members);
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+find_refs(#{kind := array, elements := Elements}, Acc) ->
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+ find_refs(Elements, Acc);
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+find_refs(#{kind := map, values := Values}, Acc) ->
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+ find_refs(Values, Acc);
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+find_refs(#{kind := struct, name := FullName}, Acc) ->
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+ [FullName | Acc];
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+find_refs(_, Acc) ->
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+ Acc.
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+
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+format_type(#{kind := primitive, name := Name}) ->
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+ format_primitive_type(Name);
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+format_type(#{kind := singleton, name := Name}) ->
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+ to_bin(["String(\"", to_bin(Name), "\")"]);
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+format_type(#{kind := enum, symbols := Symbols}) ->
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+ CommaSep = lists:join(",", lists:map(fun(S) -> to_bin(S) end, Symbols)),
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+ to_bin(["Enum(", CommaSep, ")"]);
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+format_type(#{kind := array, elements := ElementsType}) ->
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+ to_bin(["Array(", format_type(ElementsType), ")"]);
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+format_type(#{kind := union, members := MemberTypes} = U) ->
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+ DN = maps:get(display_name, U, undefined),
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+ case DN of
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+ undefined ->
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+ to_bin(["OneOf(", format_union_members(MemberTypes), ")"]);
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+ Name ->
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+ format_primitive_type(Name)
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+ end;
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+format_type(#{kind := struct, name := FullName}) ->
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+ to_bin(["Struct(", short_name(FullName), ")"]);
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+format_type(#{kind := map, name := Name, values := ValuesType}) ->
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+ to_bin(["Map($", Name, "->", format_type(ValuesType), ")"]).
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+
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+format_union_members(Members) ->
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+ format_union_members(Members, []).
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+
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+format_union_members([], Acc) ->
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+ lists:join(",", lists:reverse(Acc));
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+format_union_members([Member | Members], Acc) ->
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+ NewAcc = [format_type(Member) | Acc],
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+ format_union_members(Members, NewAcc).
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+
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+format_primitive_type(TypeStr) ->
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+ Spec = emqx_conf_schema_types:readable_docgen(?MODULE, TypeStr),
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+ to_bin(maps:get(type, Spec)).
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+
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+%% All types should have a namespace to avlid name clashing.
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+is_missing_namespace(ShortName, FullName, RootNames) ->
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+ case lists:member(ShortName, RootNames) of
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+ true ->
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+ false;
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+ false ->
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+ ShortName =:= FullName
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+ end.
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+
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+%% Returns short name from full name, fullname delemited by colon(:).
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+short_name(FullName) ->
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+ case string:split(FullName, ":") of
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+ [_, Name] -> to_bin(Name);
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+ _ -> to_bin(FullName)
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+ end.
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+
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+%% Returns the hash-anchor from full name, fullname delemited by colon(:).
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+format_hash(FullName) ->
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+ case string:split(FullName, ":") of
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+ [Namespace, Name] ->
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+ ok = warn_bad_namespace(Namespace),
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+ iolist_to_binary([Namespace, "__", Name]);
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+ _ ->
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+ iolist_to_binary(FullName)
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+ end.
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+
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+%% namespace should only have letters, numbers, and underscores.
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+warn_bad_namespace(Namespace) ->
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+ case re:run(Namespace, "^[a-zA-Z0-9_]+$", [{capture, none}]) of
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+ nomatch ->
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+ case erlang:get({bad_namespace, Namespace}) of
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+ true ->
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+ ok;
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+ _ ->
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+ erlang:put({bad_namespace, Namespace}, true),
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+ io:format(standard_error, "WARN: bad_namespace: ~s~n", [Namespace])
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+ end;
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+ _ ->
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+ ok
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+ end.
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%% TODO: move this function to emqx_dashboard when we stop generating this JSON at build time.
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hotconf_schema_json() ->
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@@ -306,12 +560,7 @@ hocon_schema_to_spec(Atom, _LocalModule) when is_atom(Atom) ->
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typename_to_spec(TypeStr, Module) ->
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emqx_conf_schema_types:readable_dashboard(Module, TypeStr).
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-to_bin(List) when is_list(List) ->
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- case io_lib:printable_list(List) of
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- true -> unicode:characters_to_binary(List);
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- false -> List
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- end;
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+to_bin(List) when is_list(List) -> iolist_to_binary(List);
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to_bin(Boolean) when is_boolean(Boolean) -> Boolean;
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to_bin(Atom) when is_atom(Atom) -> atom_to_binary(Atom, utf8);
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-to_bin(X) ->
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- X.
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+to_bin(X) -> X.
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Thales Macedo Garitezi