emmett 0.1.3-alpha

a simple etl tool
Documentation 
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WHITESPACE = _{ " " | "\t" | "\r" | "\n" }
COMMENT = _{ "/*" ~ (!"*/" ~ ANY)* ~ "*/" }

config = { SOI ~ config_block*  ~ EOI }
config_block = { config_type ~ "{" ~ plugin* ~ "}" }
config_type = { ASCII_ALPHANUMERIC+ }
plugin = { plugin_name ~ "{" ~ plugin_setting* ~ "}" }
plugin_name = { (ASCII_ALPHANUMERIC | "_")+ }
plugin_setting = { setting_key ~ "=>" ~ setting_value }

setting_key = {
	("\"" ~ (ASCII_ALPHANUMERIC | "_")+ ~ "\"") |
    (ASCII_ALPHANUMERIC | "_")+
}
setting_value = { boolean | variable | string | array | object }

string = ${ "\"" ~ inner ~ "\"" }
inner = @{ char* }
char = {
    !("\"" | "\\") ~ ANY
    | "\\" ~ ("\"" | "\\" | "/" | "b" | "f" | "n" | "r" | "t")
    | "\\" ~ ("u" ~ ASCII_HEX_DIGIT{4})
}

object = { "{" ~ plugin_setting*  ~ "}" }

array = {
    "[" ~ "]" |
    "[" ~ setting_value ~ ("," ~ setting_value)* ~ "]"
}

variable = { (ASCII_ALPHANUMERIC)+ }
boolean = { "true" | "false" }

// Input - Stdin
input_stdin_add_field = { array | object }
input_stdin_codec = { string }
input_stdin_enable_metric = { boolean }
input_stdin_enable_id = { string }
input_stdin_enable_tags = { array }
input_stdin_enable_type= { string }
input_stdin_value = {
	input_stdin_add_field |
	input_stdin_codec |
    input_stdin_enable_metric |
    input_stdin_enable_id |
    input_stdin_enable_tags |
    input_stdin_enable_type
}

// Filter - Grok
filter_grok_break_on_match = { boolean }
filter_grok_match = { object }
filter_grok_value = {
	filter_grok_match
}

// Output - Stdout
output_stdout_codec = { variable }
output_stdout_value = {
	output_stdout_codec
}