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macula
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4.4.5
4.4.4
4.4.3
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4.4.1
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3.16.0
3.15.3
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1.4.1
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0.48.6
0.48.5
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0.48.0
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0.44.1
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0.43.3
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0.43.1
0.43.0
0.42.9
0.42.8
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0.42.4
0.42.3
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0.42.0
0.41.1
0.41.0
0.40.1
0.40.0
0.39.9
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0.39.4
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0.38.4
0.38.3
0.38.2
0.38.1
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0.37.7
0.37.6
0.37.5
0.37.4
0.37.3
0.37.2
0.37.1
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0.36.6
0.36.5
0.36.4
0.36.3
0.36.2
0.36.1
0.36.0
0.35.4
0.35.3
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0.35.1
0.35.0
0.34.1
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0.33.1
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0.32.5
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0.32.1
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0.31.9
0.31.8
0.31.7
0.31.6
0.31.5
0.31.4
0.31.3
0.31.2
0.31.1
0.31.0
0.30.10
0.30.9
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0.30.6
0.30.5
0.30.4
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0.30.2
0.30.1
0.30.0
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0.28.3
0.28.2
0.28.1
0.28.0
0.27.1
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0.25.6
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0.25.1
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0.24.3
0.24.2
0.24.1
0.24.0
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0.22.12
0.22.11
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0.22.6
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0.22.0
0.21.7
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0.20.25
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0.20.0
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0.19.1
0.19.0
0.18.1
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0.17.4
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0.16.0
0.15.1
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0.14.3
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0.12.6
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0.11.3
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0.10.1
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0.9.2
0.9.1
0.9.0
0.8.25
0.8.24
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0.8.21
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0.7.30
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0.4.4
0.4.3
0.4.2
0.4.1
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0.3.4
0.3.3
0.3.2
0.3.1
Macula HTTP/3 Mesh SDK — connect, subscribe, publish, call, advertise
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Files
src/macula_time.erl
%%%-------------------------------------------------------------------
%%% @doc
%%% Time utilities for Macula.
%%% Provides functions for timestamps, durations, and timeouts.
%%% @end
%%%-------------------------------------------------------------------
-module(macula_time).
%% API
-export([
timestamp/0,
timestamp_microseconds/0,
duration_ms/2,
is_expired/2,
time_remaining/2,
format_duration_ms/1,
format_timestamp/1,
seconds_to_ms/1,
ms_to_seconds/1,
minutes_to_ms/1
]).
%%%===================================================================
%%% API Functions
%%%===================================================================
%% @doc Get current timestamp in milliseconds since epoch.
-spec timestamp() -> integer().
timestamp() ->
erlang:system_time(millisecond).
%% @doc Get current timestamp in microseconds since epoch.
-spec timestamp_microseconds() -> integer().
timestamp_microseconds() ->
erlang:system_time(microsecond).
%% @doc Calculate duration in milliseconds between two timestamps.
-spec duration_ms(integer(), integer()) -> non_neg_integer().
duration_ms(StartTimestamp, EndTimestamp) ->
max(0, EndTimestamp - StartTimestamp).
%% @doc Check if timeout has expired.
-spec is_expired(integer(), pos_integer()) -> boolean().
is_expired(StartTimestamp, TimeoutMs) ->
Now = timestamp(),
(Now - StartTimestamp) >= TimeoutMs.
%% @doc Calculate remaining time before timeout (in milliseconds).
%% Returns 0 if already expired.
-spec time_remaining(integer(), pos_integer()) -> non_neg_integer().
time_remaining(StartTimestamp, TimeoutMs) ->
Now = timestamp(),
Elapsed = Now - StartTimestamp,
max(0, TimeoutMs - Elapsed).
%% @doc Format duration in milliseconds to human-readable string.
-spec format_duration_ms(non_neg_integer()) -> binary().
format_duration_ms(Ms) when Ms < 1000 ->
list_to_binary(io_lib:format("~Bms", [Ms]));
format_duration_ms(Ms) ->
Seconds = Ms / 1000,
Truncated = trunc(Seconds),
%% Show as seconds if >= 1 second
%% Use integer format if no fractional part
case abs(Seconds - Truncated) < 0.01 of
true ->
list_to_binary(io_lib:format("~Bs", [Truncated]));
false ->
list_to_binary(io_lib:format("~.1fs", [Seconds]))
end.
%% @doc Format timestamp to ISO 8601 string.
-spec format_timestamp(integer()) -> binary().
format_timestamp(TimestampMs) ->
%% Convert milliseconds to seconds and microseconds
Seconds = TimestampMs div 1000,
Microseconds = (TimestampMs rem 1000) * 1000,
%% Convert to datetime
DateTime = calendar:system_time_to_universal_time(Seconds, second),
{{Year, Month, Day}, {Hour, Minute, Second}} = DateTime,
%% Format as ISO 8601
list_to_binary(
io_lib:format("~4..0B-~2..0B-~2..0BT~2..0B:~2..0B:~2..0B.~3..0BZ",
[Year, Month, Day, Hour, Minute, Second, Microseconds div 1000])
).
%% @doc Convert seconds to milliseconds.
-spec seconds_to_ms(non_neg_integer()) -> non_neg_integer().
seconds_to_ms(Seconds) ->
Seconds * 1000.
%% @doc Convert milliseconds to seconds (truncates).
-spec ms_to_seconds(non_neg_integer()) -> non_neg_integer().
ms_to_seconds(Ms) ->
Ms div 1000.
%% @doc Convert minutes to milliseconds.
-spec minutes_to_ms(non_neg_integer()) -> non_neg_integer().
minutes_to_ms(Minutes) ->
Minutes * 60 * 1000.