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%% -*- erlang -*- |
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-module(chrme_http_apic). |
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-export([list_targets/2, version/2, new_target/3, close_target/3]). |
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%% List available debugging targets |
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-spec list_targets(Host :: klsn:binstr(), Port :: integer()) -> {ok, [map()]} | {error, term()}. |
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list_targets(Host, Port) -> |
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%% Host must be binary; Path is binary |
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Url = build_url(Host, Port, <<"/json">>), |
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case httpc:request(get, {Url, []}, [], [{body_format, binary}]) of |
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{ok, {{_, 200, _}, _, Body}} -> |
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{ok, jsone:decode(Body)}; |
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{ok, {{_, Code, _}, _, Body}} -> |
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{error, {http_error, Code, Body}}; |
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{error, Reason} -> |
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{error, Reason} |
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end. |
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%% Query Chrome version info |
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-spec version(Host :: klsn:binstr(), Port :: integer()) -> {ok, map()} | {error, term()}. |
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version(Host, Port) -> |
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Url = build_url(Host, Port, <<"/json/version">>), |
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case httpc:request(get, {Url, []}, [], [{body_format, binary}]) of |
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{ok, {{_, 200, _}, _, Body}} -> |
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{ok, jsone:decode(Body)}; |
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{ok, {{_, Code, _}, _, Body}} -> |
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{error, {http_error, Code, Body}}; |
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{error, Reason} -> |
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{error, Reason} |
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end. |
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%% Create a new debugging target |
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-spec new_target(Host :: klsn:binstr(), Port :: integer(), Url0 :: klsn:binstr()) -> {ok, map()} | {error, term()}. |
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new_target(Host, Port, Url0) -> |
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%% Host and Url0 must be binaries |
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Url = cow_qs:urlencode(Url0), |
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PathBin = <<"/json/new?", Url/binary>>, %% build path as binary |
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FullUrl = build_url(Host, Port, PathBin), |
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%% new_target requires HTTP PUT, not GET |
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case httpc:request(put, {FullUrl, [], "application/json", <<>>}, [], [{body_format, binary}]) of |
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{ok, {{_, 200, _}, _, Body}} -> |
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{ok, jsone:decode(Body)}; |
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{ok, {{_, Code, _}, _, Body}} -> |
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{error, {http_error, Code, Body}}; |
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{error, Reason} -> |
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{error, Reason} |
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end. |
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%% Close an existing debugging target |
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-spec close_target(Host :: klsn:binstr(), Port :: integer(), TargetId0 :: klsn:binstr()) -> {ok, true} | {error, term()}. |
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close_target(Host, Port, TargetId0) -> |
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%% Host and TargetId0 must be binaries |
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PathBin = <<"/json/close/", TargetId0/binary>>, |
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Url = build_url(Host, Port, PathBin), |
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%% close_target requires HTTP PUT |
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case httpc:request(put, {Url, [], "application/json", <<>>}, [], [{body_format, binary}]) of |
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{ok, {{_, 200, _}, _, _Body}} -> |
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{ok, true}; |
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{ok, {{_, Code, _}, _, Body}} -> |
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{error, {http_error, Code, Body}}; |
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{error, Reason} -> |
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{error, Reason} |
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end. |
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%% Build an HTTP URL; binary inputs |
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-spec build_url(HostBin :: klsn:binstr(), Port :: integer(), PathBin :: klsn:binstr()) -> string(); |
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(HostList :: string(), Port :: integer(), PathList :: string()) -> string(). |
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build_url(HostBin, Port, PathBin) when is_binary(HostBin), is_integer(Port), is_binary(PathBin) -> |
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HostList = binary_to_list(HostBin), |
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PathList = binary_to_list(PathBin), |
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"http://" ++ HostList ++ ":" ++ integer_to_list(Port) ++ PathList. |