aboutsummaryrefslogtreecommitdiffstats
path: root/rust/src/lib.rs
blob: 6dbfc4685b130d730487c4f157995a564509d963 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
#![allow(proc_macro_derive_resolution_fallback)]

extern crate chrono;
extern crate fatcat_api_spec;
#[macro_use]
extern crate diesel;
extern crate diesel_migrations;
extern crate dotenv;
extern crate futures;
extern crate uuid;
#[macro_use]
extern crate hyper;
//extern crate swagger;
#[macro_use]
extern crate error_chain;
extern crate iron;
#[macro_use]
extern crate serde_json;
#[macro_use]
extern crate log;
extern crate data_encoding;
extern crate regex;
#[macro_use]
extern crate lazy_static;
extern crate sha1;

pub mod api_entity_crud;
pub mod api_helpers;
pub mod api_server;
pub mod api_wrappers;
pub mod database_models;
pub mod database_schema;

pub mod errors {
    // Create the Error, ErrorKind, ResultExt, and Result types
    error_chain! {
        foreign_links { Fmt(::std::fmt::Error);
                        Diesel(::diesel::result::Error);
                        R2d2(::diesel::r2d2::Error);
                        Uuid(::uuid::ParseError);
                        Io(::std::io::Error) #[cfg(unix)];
                        Serde(::serde_json::Error);
        }
        errors {
            InvalidFatcatId(id: String) {
                description("invalid fatcat identifier syntax")
                display("invalid fatcat identifier (expect 26-char base32 encoded): {}", id)
            }
            MalformedExternalId(id: String) {
                description("external identifier doesn't match required pattern")
                display("external identifier doesn't match required pattern")
            }
            NotInControlledVocabulary(word: String) {
                description("word or type not correct for controlled vocabulary")
                display("word or type not correct for controlled vocabulary")
            }
            EditgroupAlreadyAccepted(id: String) {
                description("editgroup was already accepted")
                display("attempted to accept an editgroup which was already accepted: {}", id)
            }
            MissingOrMultipleExternalId(message: String) {
                description("external identifiers missing or multiple specified")
                display("external identifiers missing or multiple specified; please supply exactly one")
            }
        }
    }
}

#[doc(hidden)]
pub use errors::*;

pub use self::errors::*;
use diesel::pg::PgConnection;
use diesel::prelude::*;
use diesel::r2d2::ConnectionManager;
use dotenv::dotenv;
use iron::middleware::AfterMiddleware;
use iron::{Request, Response};
use std::env;

#[cfg(feature = "postgres")]
embed_migrations!("../migrations/");

pub type ConnectionPool = diesel::r2d2::Pool<ConnectionManager<diesel::pg::PgConnection>>;

/// Establish a direct database connection. Not currently used, but could be helpful for
/// single-threaded tests or utilities.
pub fn establish_connection() -> PgConnection {
    dotenv().ok();

    let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
    PgConnection::establish(&database_url)
        .unwrap_or_else(|_| panic!("Error connecting to {}", database_url))
}

/// Instantiate a new API server with a pooled database connection
pub fn server() -> Result<api_server::Server> {
    dotenv().ok();
    let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
    let manager = ConnectionManager::<PgConnection>::new(database_url);
    let pool = diesel::r2d2::Pool::builder()
        .build(manager)
        .expect("Failed to create database pool.");
    Ok(api_server::Server { db_pool: pool })
}

pub fn test_server() -> Result<api_server::Server> {
    dotenv().ok();
    let database_url = env::var("TEST_DATABASE_URL").expect("TEST_DATABASE_URL must be set");
    env::set_var("DATABASE_URL", database_url);

    let server = server()?;
    let conn = server.db_pool.get().expect("db_pool error");

    // run migrations; revert latest (dummy data); re-run latest
    diesel_migrations::run_pending_migrations(&conn).unwrap();
    diesel_migrations::revert_latest_migration(&conn).unwrap();
    diesel_migrations::run_pending_migrations(&conn).unwrap();
    Ok(server)
}

/// HTTP header middleware
header! { (XClacksOverhead, "X-Clacks-Overhead") => [String] }

pub struct XClacksOverheadMiddleware;

impl AfterMiddleware for XClacksOverheadMiddleware {
    fn after(&self, _req: &mut Request, mut res: Response) -> iron::IronResult<Response> {
        res.headers
            .set(XClacksOverhead("GNU aaronsw, jpb".to_owned()));
        Ok(res)
    }
}