diff options
| author | Akshay <[email protected]> | 2020-08-23 06:08:49 +0100 |
|---|---|---|
| committer | Akshay <[email protected]> | 2020-08-23 06:08:49 +0100 |
| commit | 4c19a73fd1d21fb5d40cf15cb7312e37502bc03a (patch) | |
| tree | 47d4858e66d9519df38ea9d60cbdff1a0529aac3 /src | |
| parent | 70eeba1f481d625db311ea4d961453d3e1b90ea7 (diff) | |
add basic error handling
Diffstat (limited to 'src')
| -rw-r--r-- | src/main.rs | 56 |
1 files changed, 40 insertions, 16 deletions
diff --git a/src/main.rs b/src/main.rs index 801da3c..cb76d5b 100644 --- a/src/main.rs +++ b/src/main.rs | |||
| @@ -1,19 +1,18 @@ | |||
| 1 | use futures_util::TryStreamExt; | 1 | use anyhow::{Context, Result}; |
| 2 | use hyper::service::{make_service_fn, service_fn}; | 2 | use hyper::service::{make_service_fn, service_fn}; |
| 3 | use hyper::{Body, Method, Request, Response, Server, StatusCode}; | 3 | use hyper::{Body, Method, Request, Response, Server, StatusCode}; |
| 4 | use nanoid::nanoid; | 4 | use nanoid::nanoid; |
| 5 | use rusqlite::{params, Connection, OpenFlags, Result, NO_PARAMS}; | 5 | use rusqlite::{params, Connection, OpenFlags, NO_PARAMS}; |
| 6 | use url::form_urlencoded; | 6 | use url::form_urlencoded; |
| 7 | 7 | ||
| 8 | use std::collections::HashMap; | 8 | use std::collections::HashMap; |
| 9 | use std::path::{Path, PathBuf}; | 9 | use std::path::Path; |
| 10 | use std::str::from_utf8; | ||
| 11 | 10 | ||
| 12 | fn shorten<S: AsRef<str>>(url: S, conn: &mut Connection) -> Result<String> { | 11 | fn shorten<S: AsRef<str>>(url: S, conn: &mut Connection) -> Result<String> { |
| 13 | let mut stmt = conn.prepare("select * from urls where link = ?1")?; | 12 | let mut stmt = conn.prepare("select * from urls where link = ?1")?; |
| 14 | let mut rows = stmt.query(params![url.as_ref().to_string()])?; | 13 | let mut rows = stmt.query(params![url.as_ref().to_string()])?; |
| 15 | if let Some(row) = rows.next()? { | 14 | if let Some(row) = rows.next()? { |
| 16 | return row.get(1); | 15 | return Ok(row.get(1)?); |
| 17 | } else { | 16 | } else { |
| 18 | let new_id = nanoid!(4); | 17 | let new_id = nanoid!(4); |
| 19 | conn.execute( | 18 | conn.execute( |
| @@ -25,7 +24,6 @@ fn shorten<S: AsRef<str>>(url: S, conn: &mut Connection) -> Result<String> { | |||
| 25 | } | 24 | } |
| 26 | 25 | ||
| 27 | fn get_link<S: AsRef<str>>(url: S, conn: &mut Connection) -> Result<Option<String>> { | 26 | fn get_link<S: AsRef<str>>(url: S, conn: &mut Connection) -> Result<Option<String>> { |
| 28 | eprintln!("{}", url.as_ref()); | ||
| 29 | let url = url.as_ref(); | 27 | let url = url.as_ref(); |
| 30 | let mut stmt = conn.prepare("select * from urls where shortlink = ?1")?; | 28 | let mut stmt = conn.prepare("select * from urls where shortlink = ?1")?; |
| 31 | let mut rows = stmt.query(params![url.to_string()])?; | 29 | let mut rows = stmt.query(params![url.to_string()])?; |
| @@ -36,33 +34,59 @@ fn get_link<S: AsRef<str>>(url: S, conn: &mut Connection) -> Result<Option<Strin | |||
| 36 | } | 34 | } |
| 37 | } | 35 | } |
| 38 | 36 | ||
| 39 | async fn shortner_service(req: Request<Body>) -> Result<Response<Body>, hyper::Error> { | 37 | async fn shortner_service(req: Request<Body>) -> Result<Response<Body>> { |
| 40 | let mut conn = init_db("./urls.db_3").unwrap(); | 38 | let mut conn = init_db("./urls.db_3").unwrap(); |
| 39 | eprintln!("{:?}", req); | ||
| 41 | 40 | ||
| 42 | match req.method() { | 41 | match req.method() { |
| 43 | &Method::POST => { | 42 | &Method::POST => { |
| 44 | let b = hyper::body::to_bytes(req).await?; | 43 | let b = hyper::body::to_bytes(req) |
| 44 | .await | ||
| 45 | .with_context(|| format!("Failed to stream request body!"))?; | ||
| 46 | |||
| 45 | let params = form_urlencoded::parse(b.as_ref()) | 47 | let params = form_urlencoded::parse(b.as_ref()) |
| 46 | .into_owned() | 48 | .into_owned() |
| 47 | .collect::<HashMap<String, String>>(); | 49 | .collect::<HashMap<String, String>>(); |
| 48 | 50 | ||
| 49 | if let Some(n) = params.get("shorten") { | 51 | if let Some(n) = params.get("shorten") { |
| 50 | let shortlink = shorten(n, &mut conn).unwrap(); | 52 | let shortlink = shorten(n, &mut conn)?; |
| 51 | return Ok(Response::new(Body::from(shortlink))); | 53 | eprintln!("{}", shortlink); |
| 54 | let res = Response::builder() | ||
| 55 | .status(StatusCode::OK) | ||
| 56 | .header("content-type", "text/html") | ||
| 57 | .body(Body::from(shortlink))?; | ||
| 58 | Ok(res) | ||
| 52 | } else { | 59 | } else { |
| 53 | return Ok(Response::new(Body::from("invalid form"))); | 60 | eprintln!("hello world"); |
| 54 | }; | 61 | let res = Response::builder() |
| 62 | .status(StatusCode::UNPROCESSABLE_ENTITY) | ||
| 63 | .body(Body::empty())?; | ||
| 64 | Ok(res) | ||
| 65 | } | ||
| 55 | } | 66 | } |
| 56 | &Method::GET => { | 67 | &Method::GET => { |
| 57 | let shortlink = req.uri().path().to_string(); | 68 | let shortlink = req.uri().path().to_string(); |
| 58 | let link = get_link(&shortlink[1..], &mut conn); | 69 | let link = get_link(&shortlink[1..], &mut conn); |
| 59 | if let Some(l) = link.unwrap() { | 70 | if let Some(l) = link.unwrap() { |
| 60 | return Ok(Response::new(Body::from(l))); | 71 | Ok(Response::builder() |
| 72 | .header("Location", &l) | ||
| 73 | .header("content-type", "text/html") | ||
| 74 | .status(StatusCode::MOVED_PERMANENTLY) | ||
| 75 | .body(Body::from(format!( | ||
| 76 | "You will be redirected to: {}. If not, click the link.", | ||
| 77 | &l | ||
| 78 | )))?) | ||
| 61 | } else { | 79 | } else { |
| 62 | return Ok(Response::new(Body::from("not found!"))); | 80 | Ok(Response::builder() |
| 81 | .status(StatusCode::NOT_FOUND) | ||
| 82 | .body(Body::empty())?) | ||
| 63 | } | 83 | } |
| 64 | } | 84 | } |
| 65 | _ => unimplemented!(), | 85 | _ => { |
| 86 | return Ok(Response::builder() | ||
| 87 | .status(StatusCode::NOT_FOUND) | ||
| 88 | .body(Body::empty())?) | ||
| 89 | } | ||
| 66 | } | 90 | } |
| 67 | } | 91 | } |
| 68 | 92 | ||
| @@ -76,7 +100,7 @@ fn init_db<P: AsRef<Path>>(p: P) -> Result<Connection> { | |||
| 76 | link TEXT PRIMARY KEY, | 100 | link TEXT PRIMARY KEY, |
| 77 | shortlink TEXT NOT NULL | 101 | shortlink TEXT NOT NULL |
| 78 | )", | 102 | )", |
| 79 | params![], | 103 | NO_PARAMS, |
| 80 | )?; | 104 | )?; |
| 81 | return Ok(conn); | 105 | return Ok(conn); |
| 82 | } | 106 | } |