nakadion 0.7.4

A connector for the Nakadi Event Broker
Documentation 
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

//! Some common types
use std::fmt;

use uuid::Uuid;

/// A `SubscriptionId` is used to guarantee a continous flow of events for a
/// client.
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct SubscriptionId(pub String);

impl fmt::Display for SubscriptionId {
    fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
        write!(f, "{}", self.0)
    }
}

/// A partition id that comes with a `Cursor`
#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
pub struct PartitionId(pub String);

impl fmt::Display for PartitionId {
    fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
        write!(f, "{}", self.0)
    }
}

/// A `StreamId` identifies a subscription. It must be provided for checkpointing with
/// a `Cursor`.
#[derive(Clone, Debug)]
pub struct StreamId(pub String);

impl StreamId {
    pub fn new<T: Into<String>>(id: T) -> Self {
        StreamId(id.into())
    }
}

impl fmt::Display for StreamId {
    fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
        write!(f, "{}", self.0)
    }
}

/// A `StreamId` identifies a subscription. It must be provided for checkpointing with
/// a `Cursor`.
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct FlowId(pub String);

impl FlowId {
    pub fn new<T: Into<String>>(id: T) -> Self {
        FlowId(id.into())
    }
}

impl fmt::Display for FlowId {
    fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
        write!(f, "{}", self.0)
    }
}

impl Default for FlowId {
    fn default() -> FlowId {
        FlowId(Uuid::new_v4().to_string())
    }
}

/// Information on a current batch. This might be
/// useful for a `Handler` that wants to do checkpointing on its own.
#[derive(Clone, Debug)]
pub struct BatchCommitData<'a> {
    pub stream_id: StreamId,
    pub cursor: &'a [u8],
}

/// The [`Nakadi Event Type`](https://github.com/zalando/nakadi#creating-event-types).
/// Similiar to a topic.
#[derive(Clone, Debug)]
pub struct EventType<'a>(pub &'a str);

impl<'a> EventType<'a> {
    /// Creates a new instance of an
    /// [`EventType`](https://github.com/zalando/nakadi#creating-event-types).
    pub fn new(value: &'a str) -> EventType {
        EventType(value)
    }
}