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-rw-r--r--src/lib.rs96
1 files changed, 95 insertions, 1 deletions
diff --git a/src/lib.rs b/src/lib.rs
index 8ea77d4..9f5b8a2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,10 +1,14 @@
+use hyper::{Request, Body, Method, Uri};
+use http::request;
use serde::{Serialize, Deserialize};
use std::collections::HashMap;
+
#[derive(Default, Deserialize, Debug, Clone)]
pub struct ProxyConfig {
- pub bind_addr: Option<String>,
+ pub bind_addr: Option<String>, // 127.0.0.1:9292
+ pub upstream_addr: Option<String>, // 127.0.0.1:9200
pub index: Vec<IndexConfig>
}
@@ -13,6 +17,18 @@ pub struct IndexConfig {
pub name: String,
}
+impl ProxyConfig {
+
+ pub fn allow_index(&self, name: &str) -> bool {
+ for index in &self.index {
+ if index.name == name {
+ return true
+ }
+ }
+ false
+ }
+}
+
#[derive(Serialize, Deserialize, Debug)]
pub struct ApiRequest {
pub method: String,
@@ -251,3 +267,81 @@ pub struct InnerHits {
sort: Option<Vec<SortElement>>,
name: Option<String>,
}
+
+#[derive(Debug)]
+pub enum ParsedRequest {
+ Malformed(String),
+ ParseError(String),
+ NotAllowed(String),
+ NotSupported(String),
+ NotFound(String),
+ Allowed(Request<Body>),
+}
+
+pub fn parse_request(req: Request<Body>, config: &ProxyConfig) -> ParsedRequest {
+ let (parts, body) = req.into_parts();
+
+ // split path into at most 3 chunks
+ let mut req_path = parts.uri.path();
+ if req_path.starts_with("/") {
+ req_path = &req_path[1..];
+ }
+ let path_chunks: Vec<&str> = req_path.split("/").collect();
+ if path_chunks.len() > 3 {
+ return ParsedRequest::NotSupported("only request paths with up to three segments allowed".to_string())
+ }
+
+ println!("{:?}", path_chunks);
+
+ // this is sort of like a router
+ match (&parts.method, path_chunks.as_slice()) {
+ (&Method::GET, [""]) | (&Method::HEAD, [""]) => {
+ parse_request_basic("", &parts, config)
+ },
+ (&Method::POST, ["_search", "scroll"]) | (&Method::DELETE, ["_search", "scroll"]) => {
+ parse_request_scroll(None, &parts, body, config)
+ },
+ (&Method::POST, ["_search", "scroll", key]) | (&Method::DELETE, ["_search", "scroll", key]) => {
+ parse_request_scroll(Some(key), &parts, body, config)
+ },
+ (&Method::GET, [index, "_search"]) | (&Method::POST, [index, "_search"]) => {
+ parse_request_search(index, &parts, body, config)
+ },
+ //(Method::GET, [index, "_count"]) => {
+ // parse_request_count(index, "_count", None, &parts, body, config)
+ //},
+ (&Method::GET, [index, "_doc", key]) | (&Method::GET, [index, "_source", key]) => {
+ parse_request_read(index, path_chunks[1], key, &parts, body, config)
+ },
+ _ => ParsedRequest::NotSupported("unknown endpoint".to_string()),
+ }
+}
+
+pub fn parse_request_basic(endpoint: &str, parts: &request::Parts, config: &ProxyConfig) -> ParsedRequest {
+ // XXX: partial
+ let upstream_uri = Uri::builder()
+ .scheme("http")
+ .authority(config.upstream_addr.as_ref().unwrap_or(&"localhost:9200".to_string()).as_str())
+ .path_and_query(format!("/{}", endpoint).as_str())
+ .build()
+ .unwrap();
+ println!("{:?}", upstream_uri);
+ let upstream_req = Request::builder()
+ .uri(upstream_uri)
+ .method(&parts.method)
+ .body(Body::empty())
+ .unwrap();
+ ParsedRequest::Allowed(upstream_req)
+}
+
+pub fn parse_request_scroll(key: Option<&str>, parts: &request::Parts, body: Body, config: &ProxyConfig) -> ParsedRequest {
+ ParsedRequest::NotSupported("not yet implemented".to_string())
+}
+
+pub fn parse_request_search(index: &str, parts: &request::Parts, body: Body, config: &ProxyConfig) -> ParsedRequest {
+ ParsedRequest::NotSupported("not yet implemented".to_string())
+}
+
+pub fn parse_request_read(index: &str, endpoint: &str, key: &str, parts: &request::Parts, body: Body, config: &ProxyConfig) -> ParsedRequest {
+ ParsedRequest::NotSupported("not yet implemented".to_string())
+}