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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
use std::sync::Mutex;
use anyhow::anyhow;
use anyhow::Result;
use cached::TimedSizedCache;
use cached::proc_macro::cached;
use crate::model::backend::error::BackendError;
use crate::model::backend::messages::BackendRequest;
use crate::model::backend::messages::BackendResponse;
use crate::model::backend::channels::BackendRequestdReceiver;
use crate::model::backend::channels::BackendResponseSender;
pub struct BackendWorker {
repo_name: String,
repo: Mutex<git2::Repository>,
receiver: BackendRequestdReceiver,
}
impl BackendWorker {
pub fn new(
repo_name: String,
repo: Mutex<git2::Repository>,
receiver: BackendRequestdReceiver,
) -> Self {
BackendWorker { repo_name, repo, receiver }
}
pub fn run(self) {
loop {
if let Err(e) = self.handle() {
log::error!("Error in backend: {}", e);
}
}
}
fn handle(&self) -> std::result::Result<(), BackendError> {
match self.receiver.recv().map_err(|_| BackendError::ChannelError)? {
(BackendRequest::BranchList, chnl) => self.send_branch_list(chnl),
(BackendRequest::TagList, chnl) => self.send_tag_list(chnl),
(BackendRequest::FindBranchId(name), chnl) => self.find_branch_id(name, chnl),
(BackendRequest::FindTreeForId(id), chnl) => self.find_tree_for_id(id, chnl),
(BackendRequest::GetTreeElements(id), chnl) => self.get_tree_elements(id, chnl),
}
}
fn exec_on_repo<R, F>(&self, f: F) -> std::result::Result<R, BackendError>
where R: Sized,
F: FnOnce(&git2::Repository) -> std::result::Result<R, BackendError>,
{
let repo = self.repo.lock().map_err(|_| BackendError::LockError)?;
let res = f(&repo);
drop(repo);
res
}
fn send_branch_list(&self, sender: BackendResponseSender) -> std::result::Result<(), BackendError> {
let branch_names = self.exec_on_repo(|repo| {
get_branch_names(&self.repo_name, repo).map_err(|e| BackendError::Str(e.to_string()))
})?;
sender.send(BackendResponse::BranchList(branch_names))
.map_err(|_| BackendError::ChannelError)
}
fn send_tag_list(&self, sender: BackendResponseSender) -> std::result::Result<(), BackendError> {
let tag_names = self.exec_on_repo(|repo| {
get_tag_names(&self.repo_name, repo).map_err(|e| BackendError::Str(e.to_string()))
})?;
sender.send(BackendResponse::TagList(tag_names))
.map_err(|_| BackendError::ChannelError)
}
fn find_branch_id(&self, name: String, sender: BackendResponseSender) -> std::result::Result<(), BackendError> {
let branch_id = self.exec_on_repo(move |repo| {
let branch = repo.find_branch(&name, git2::BranchType::Local)
.map_err(|_| BackendError::FindBranchError(name.clone()))?;
branch.get()
.peel_to_commit()
.map_err(|_| BackendError::BranchPeelToCommitError(name))
.map(|c| c.id())
})?;
sender.send(BackendResponse::BranchId(branch_id))
.map_err(|_| BackendError::ChannelError)
}
fn find_tree_for_id(&self, id: git2::Oid, sender: BackendResponseSender) -> std::result::Result<(), BackendError> {
let id = self.exec_on_repo(|repo| {
repo.find_tree(id).map_err(|_| BackendError::FindTreeForIdError(id)).map(|t| t.id())
})?;
sender.send(BackendResponse::TreeId(id))
.map_err(|_| BackendError::ChannelError)
}
fn get_tree_elements(&self, id: git2::Oid, sender: BackendResponseSender) -> std::result::Result<(), BackendError> {
let elements = self.exec_on_repo(|repo| {
repo.find_tree(id)
.map_err(|_| BackendError::FindTreeForIdError(id))
.map(|tree| {
tree.iter()
.map(|elem| crate::model::backend::messages::TreeElement {
id: elem.id(),
name: elem.name().map(String::from),
kind: elem.kind(),
})
.collect()
})
})?;
sender.send(BackendResponse::TreeElements(elements))
.map_err(|_| BackendError::ChannelError)
}
}
#[cached(
type = "TimedSizedCache<String, Vec<String>>",
create = "{ TimedSizedCache::with_size_and_lifespan(1, 60) }",
convert = r#"{ _repo_name.to_owned() }"#,
result = true,
)]
fn get_branch_names(_repo_name: &str, repo: &git2::Repository) -> Result<Vec<String>> {
repo.branches(None)?
.map(|branch| {
let branch = branch?.0;
branch.name()?
.ok_or_else(|| anyhow!("Branch name is not valid UTF8: {:?}", branch.name()))
.map(String::from)
})
.collect::<Result<Vec<String>>>()
}
#[cached(
type = "TimedSizedCache<String, Vec<String>>",
create = "{ TimedSizedCache::with_size_and_lifespan(1, 60) }",
convert = r#"{ _repo_name.to_owned() }"#,
result = true,
)]
fn get_tag_names(_repo_name: &str, repo: &git2::Repository) -> Result<Vec<String>> {
repo.tag_names(None)?
.into_iter()
.map(|tag| {
tag.ok_or_else(|| anyhow!("Tag name is not valid UTF8: {:?}", tag))
.map(String::from)
})
.collect::<Result<Vec<String>>>()
}
|
