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|
#![recursion_limit = "1024"]
#![feature(plugin)]
#![plugin(rocket_codegen)]
extern crate clap;
extern crate chrono;
extern crate dimensioned;
#[macro_use]
extern crate error_chain;
#[macro_use]
extern crate log;
extern crate regex;
extern crate rocket;
extern crate rocket_contrib;
extern crate serde;
#[macro_use]
extern crate serde_derive;
extern crate serde_json;
extern crate simplelog;
use std::collections::HashMap;
use std::fs::File;
use std::io::{BufReader, BufRead};
use std::process::exit;
use clap::{App, Arg};
use rocket::State;
use rocket_contrib::Json;
use simplelog::{SimpleLogger, LogLevelFilter, Config as LogConfig};
mod api;
mod config;
mod error;
use api::*;
use config::{Config, LogItem};
use error::*;
#[get("/")]
fn index() -> &'static str {
"Hello there!"
}
#[post("/search", format = "application/json", data = "<data>")]
fn search(data : Json<Search>, config: State<Config>) -> Json<SearchResponse> {
debug!("handling search request: {:?}", data.0);
Json(
SearchResponse(
(*config.all_aliases()).clone()
)
)
}
#[post("/query", format = "application/json", data = "<data>")]
fn query(data: Json<Query>, config: State<Config>) -> Result<Json<QueryResponse>> {
debug!("handling query: {:?}", data.0);
let targets = data.0.targets;
debug!("targets: {:?}", targets);
let mut target_hash : HashMap<&String, (&LogItem, Vec<(String, String)>)> = HashMap::new();
for li in config.items() {
for t in targets.clone() {
if li.aliases().contains(&t.target) {
if target_hash.contains_key(&li.alias()) {
if let Some(&mut (_litem, ref mut cnames)) = target_hash.get_mut(&li.alias()) {
cnames.push((
t.target
.split('.')
.nth(1)
.ok_or(Error::from("no capture name found"))?
.into(),
t.target.clone())
);
}
}
else {
target_hash.insert(
li.alias(),
(&li, vec![(
t.target
.split('.')
.nth(1)
.ok_or(Error::from("no capture name found"))?
.into(),
t.target.clone())
]
)
);
}
}
}
}
let date_from = data.0.range.from.timestamp();
let date_to = data.0.range.to.timestamp();
let mut response : Vec<TargetData> = Vec::new();
for (_alias, &(logitem, ref cns)) in target_hash.iter() {
let mut series_vec = Vec::new();
for &(_, ref t) in cns.iter() {
series_vec.push(Series{ target : (*t).clone(), datapoints : Vec::new() });
}
let mut line_iter = BufReader::new(
File::open(logitem.file())
.chain_err(|| format!("antikoerper log file could not be opened: {}", logitem.file()))?
).lines();
while let Some(Ok(line)) = line_iter.next() {
if let Some(capture_groups) = logitem.regex().captures_iter(&line).next() {
let timestamp = capture_groups["ts"]
.parse::<f64>()
.chain_err(|| "Failed to parse the filestamp")?;
if (timestamp as i64) > date_from && (timestamp as i64) < date_to {
for i in 0..cns.len() {
let captured = capture_groups[
cns.get(i)
.ok_or(Error::from("out of bounds: capture_groups"))?
.0.as_str()
].parse::<f64>()
.chain_err(|| "failed to parse the capture group")?;
series_vec
.get_mut(i)
.ok_or(Error::from("out of bounds: series_vec"))?
.datapoints
.push([
captured,
timestamp * 1000.0
]);
}
}
}
}
for series in series_vec.iter() {
response.push(TargetData::Series((*series).clone()));
}
}
Ok( Json( QueryResponse{ 0 : response } ) )
}
fn main() {
let matches = App::new("aklog-server")
.version("0.1.0")
.author("Mario Krehl <mario-krehl@gmx.de>")
.about("Presents antikoerper-logfiles to grafana")
.arg(Arg::with_name("config")
.short("c")
.long("config")
.value_name("FILE")
.help("configuration file to use")
.takes_value(true)
.required(true))
.arg(Arg::with_name("verbosity")
.short("v")
.long("verbose")
.help("sets the level of verbosity")
.multiple(true))
.get_matches();
match matches.occurrences_of("verbosity") {
0 => SimpleLogger::init(LogLevelFilter::Warn, LogConfig::default()).unwrap(),
1 => SimpleLogger::init(LogLevelFilter::Info, LogConfig::default()).unwrap(),
2 => SimpleLogger::init(LogLevelFilter::Debug, LogConfig::default()).unwrap(),
3 | _ => SimpleLogger::init(LogLevelFilter::Trace, LogConfig::default()).unwrap(),
};
debug!("Initialized logger");
let config_file = matches.value_of("config").unwrap();
let config = match Config::load(String::from(config_file)) {
Ok(c) => c,
Err(e) => {
error!("{}", e);
exit(1);
},
};
rocket::ignite()
.manage(config)
.mount("/", routes![index, search, query])
.launch();
}
|
