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pillar
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Elixir client for ClickHouse, a fast open-source Online Analytical Processing (OLAP) database management system.
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lib/pillar/http_client.ex
defmodule Pillar.HttpClient do
@moduledoc false
require Logger
alias Pillar.HttpClient.Response
alias Pillar.HttpClient.TransportError
def post(url, post_body \\ "", options \\ [timeout: 10_000]) do
result =
:httpc.request(
:post,
{String.to_charlist(url), [], 'application/json', post_body},
options,
[]
)
response_to_app_structure(result)
end
defp response_to_app_structure(response_tuple) do
case response_tuple do
{:ok, {{_http_ver, status_code, _a_status_desc}, headers, body}} ->
%Response{
status_code: status_code,
body: format_body(body),
headers: downcase_headers_names(headers)
}
{:error, reason} ->
%TransportError{reason: reason}
end
end
defp downcase_headers_names(headers) do
Enum.map(headers, fn {charlist_key, value} ->
string_key = to_string(charlist_key)
{String.downcase(string_key), to_string(value)}
end)
end
defp format_body(data) when is_list(data), do: IO.iodata_to_binary(data)
defp format_body(data) when is_binary(data), do: data
end