Packages
dqe
0.4.14
0.4.15
0.4.14
0.4.13
0.4.12
0.4.11
0.4.10
0.4.9
0.4.8
0.4.7
0.4.6
0.4.5
0.4.4
0.4.3
0.4.2
0.4.1
0.4.0
0.3.25
0.3.24
0.3.23
0.3.22
0.3.21
0.3.20
0.3.19
0.3.18
0.3.17
0.3.16
0.3.15
0.3.14
0.3.13
0.3.12
0.3.11
0.3.10
0.3.9
0.3.8
0.3.7
0.3.6
0.3.5
0.3.4
0.3.3
0.3.2
0.3.1
0.2.2
0.2.1
0.2.0
0.1.36
0.1.35
0.1.34
0.1.33
0.1.22
0.1.21
0.1.20
0.1.10
0.1.9
DalmatinerDB query engine
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src/dqe_collect.erl
-module(dqe_collect).
-behaviour(dflow).
-export([init/1, describe/1, start/2, emit/3, done/2]).
-record(state, {
acc = <<>>:: binary(),
name :: binary(),
resolution :: pos_integer(),
mdata :: [{binary(), binary()}]
}).
init([Name, MData, SubQ]) ->
init([Name, MData, -1, SubQ]);
init([Name, MData, Resolution, SubQ]) when not is_list(SubQ) ->
{ok, #state{name = Name, resolution = Resolution, mdata = MData}, SubQ}.
describe(_) ->
"collect".
start(_, State) ->
{ok, State}.
%% When we get the first data we can calculate both the applied
%% time and the upwards resolution.
emit(_C, Data, State = #state{acc = Acc})
when is_binary(Data) ->
{ok, State#state{acc = <<Acc/binary, Data/binary>>}}.
done(_Child, State = #state{resolution = undefined}) ->
{done, State};
done(_Child, State = #state{resolution = Resolution, name = Name, acc = Acc,
mdata = MData}) ->
{done, #{
name => Name,
data => mmath_bin:derealize(Acc),
resolution => Resolution,
metadata => maps:from_list(MData),
type => metrics},
State#state{acc = <<>>}}.