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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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Files
lib/pillar/http_client.ex
defmodule Pillar.HttpClient do
@moduledoc false
alias Pillar.HttpClient.Response
alias Pillar.HttpClient.TransportError
def post(url, post_body \\ "", options \\ [timeout: 10_000]) do
result =
[
Tesla.Middleware.FollowRedirects,
{Tesla.Middleware.Timeout, timeout: Keyword.get(options, :timeout, 10_000)}
]
|> Tesla.client(Tesla.Adapter.Mint)
|> Tesla.post(url, post_body, [])
response_to_app_structure(result)
end
defp response_to_app_structure(response_tuple) do
case response_tuple do
{:ok, %Tesla.Env{status: status_code, headers: headers, body: body}} ->
%Response{
status_code: status_code,
body: format_body(body),
headers: downcase_headers_names(headers)
}
{:error, %Mint.TransportError{reason: reason}} ->
%TransportError{reason: reason}
{: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(nil), do: ""
defp format_body(data) when is_binary(data), do: data
defp format_body(data) when is_list(data), do: IO.iodata_to_binary(data)
end