hive-router 0.2.0

GraphQL router for Federation, part of the Hive platform
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

use crate::vrl::expressions::VrlProgram;
use ahash::HashMap;
use http::{HeaderName, HeaderValue};
use regex_automata::meta::Regex;

#[derive(Default, Clone)]
pub struct HeaderRulesPlan {
    pub request: RequestHeaderRules,
    pub response: ResponseHeaderRules,
}

type SubgraphName = String;

#[derive(Clone, Default)]
pub struct RequestHeaderRules {
    pub global: Vec<RequestHeaderRule>,
    pub by_subgraph: HashMap<SubgraphName, Vec<RequestHeaderRule>>,
}

#[derive(Clone, Default)]
pub struct ResponseHeaderRules {
    pub global: Vec<ResponseHeaderRule>,
    pub by_subgraph: HashMap<SubgraphName, Vec<ResponseHeaderRule>>,
}

#[derive(Clone)]
pub enum RequestHeaderRule {
    PropagateNamed(RequestPropagateNamed),
    PropagateRegex(RequestPropagateRegex),
    InsertStatic(RequestInsertStatic),
    InsertExpression(RequestInsertExpression),
    RemoveNamed(RequestRemoveNamed),
    RemoveRegex(RequestRemoveRegex),
}

#[derive(Clone)]
pub struct RequestPropagateNamed {
    pub names: Vec<HeaderName>,
    pub default: Option<HeaderValue>,
    pub rename: Option<HeaderName>,
}

#[derive(Clone)]
pub struct RequestPropagateRegex {
    pub include: Option<Regex>,
    pub exclude: Option<Regex>,
}

#[derive(Clone)]
pub struct RequestInsertStatic {
    pub name: HeaderName,
    pub value: HeaderValue,
}

#[derive(Clone)]
pub struct ResponseInsertStatic {
    pub name: HeaderName,
    pub value: HeaderValue,
    pub strategy: HeaderAggregationStrategy,
}

#[derive(Clone)]
pub struct RequestInsertExpression {
    pub name: HeaderName,
    pub expression: Box<VrlProgram>,
}

#[derive(Clone)]
pub struct ResponseInsertExpression {
    pub name: HeaderName,
    pub expression: Box<VrlProgram>,
    pub strategy: HeaderAggregationStrategy,
}

#[derive(Clone)]
pub struct RequestRemoveNamed {
    pub names: Vec<HeaderName>,
}

#[derive(Clone)]
pub struct ResponseRemoveNamed {
    pub names: Vec<HeaderName>,
}

#[derive(Clone)]
pub struct RequestRemoveRegex {
    pub regex: Regex,
}

#[derive(Clone)]
pub struct ResponseRemoveRegex {
    pub regex: Regex,
}

#[derive(Clone)]
pub enum ResponseHeaderRule {
    PropagateNamed(ResponsePropagateNamed),
    PropagateRegex(ResponsePropagateRegex),
    InsertStatic(ResponseInsertStatic),
    InsertExpression(ResponseInsertExpression),
    RemoveNamed(ResponseRemoveNamed),
    RemoveRegex(ResponseRemoveRegex),
}

#[derive(Clone)]
pub struct ResponsePropagateNamed {
    pub names: Vec<HeaderName>,
    pub rename: Option<HeaderName>,
    pub default: Option<HeaderValue>,
    pub strategy: HeaderAggregationStrategy,
}

#[derive(Clone)]
pub struct ResponsePropagateRegex {
    pub include: Option<Regex>,
    pub exclude: Option<Regex>,
    pub strategy: HeaderAggregationStrategy,
}

#[derive(Clone, Copy, Debug)]
pub enum HeaderAggregationStrategy {
    First,
    Last,
    Append,
}