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
pub extern crate mongo_file_center;
extern crate percent_encoding;
extern crate rocket;
extern crate rocket_etag_if_none_match;
use std::io::Cursor;
use std::fmt::{self, Debug, Formatter};
use mongo_file_center::{FileCenter, FileItem, FileData, FileCenterError, bson::oid::ObjectId};
pub use rocket_etag_if_none_match::{EntityTag, EtagIfNoneMatch};
use rocket::response::{self, Response, Responder};
use rocket::request::Request;
use rocket::http::{Status, hyper::header::ETag};
pub struct FileCenterRawResponse {
pub file_item: Option<FileItem>,
pub etag: EntityTag,
pub file_name: Option<String>,
}
impl Debug for FileCenterRawResponse {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
f.write_fmt(format_args!("FileCenterRawResponse {{etag: {:?}, file_name: {:?}, file_item: {:?}}}", self.etag, self.file_name, self.file_item))
}
}
impl Responder<'static> for FileCenterRawResponse {
fn respond_to(self, _: &Request) -> response::Result<'static> {
let mut response = Response::build();
match self.file_item {
Some(file_item) => {
response.header(ETag(self.etag));
if let Some(file_name) = self.file_name {
if !file_name.is_empty() {
response.raw_header("Content-Disposition", format!("inline; filename*=UTF-8''{}", percent_encoding::percent_encode(file_name.as_bytes(), percent_encoding::QUERY_ENCODE_SET)));
}
} else {
let file_name = file_item.get_file_name();
if !file_name.is_empty() {
response.raw_header("Content-Disposition", format!("inline; filename*=UTF-8''{}", percent_encoding::percent_encode(file_name.as_bytes(), percent_encoding::QUERY_ENCODE_SET)));
}
}
response.raw_header("Content-Type", file_item.get_mime_type().to_string())
.raw_header("Content-Length", file_item.get_file_size().to_string());
match file_item.into_file_data() {
FileData::Collection(v) => {
response.sized_body(Cursor::new(v));
}
FileData::GridFS(g) => {
response.streamed_body(g);
}
}
}
None => {
response.status(Status::NotModified);
}
}
response.ok()
}
}
impl FileCenterRawResponse {
pub fn from_object_id<S: Into<String>>(file_center: &FileCenter, etag_if_none_match: EtagIfNoneMatch, etag: EntityTag, id: &ObjectId, file_name: Option<S>) -> Result<Option<FileCenterRawResponse>, FileCenterError> {
let is_etag_match = etag_if_none_match.weak_eq(&etag);
if is_etag_match {
Ok(Some(FileCenterRawResponse {
file_item: None,
etag,
file_name: None,
}))
} else {
let file_item = file_center.get_file_item_by_id(id)?;
match file_item {
Some(file_item) => {
let file_name = file_name.map(|file_name| file_name.into());
Ok(Some(FileCenterRawResponse {
file_item: Some(file_item),
etag,
file_name,
}))
}
None => Ok(None)
}
}
}
pub fn create_etag_by_id_token<S: Into<String>>(id_token: S) -> EntityTag {
EntityTag::new(true, id_token.into())
}
}