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
153
154
155
156
157

// Copyright 2020-2022 The NATS Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//! JetStream is a NATS built-in persistence layer providing
//! [Streams][crate::jetstream::stream::Stream] with *at least once*
//! and *exactly once* semantics.
//!
//! To start, create a new [Context] which is an entrypoint to `JetStream` API.
//!
//! # Examples
//!
//! ```no_run
//! # #[tokio::main]
//! # async fn mains() -> Result<(), async_nats::Error> {
//! use futures::StreamExt;
//! use futures::TryStreamExt;
//!
//! let client = async_nats::connect("localhost:4222").await?;
//! let jetstream = async_nats::jetstream::new(client);
//!
//! let stream = jetstream.get_or_create_stream(async_nats::jetstream::stream::Config {
//!     name: "events".to_string(),
//!     max_messages: 10_000,
//!     ..Default::default()
//! }).await?;
//!
//! jetstream.publish("events".to_string(), "data".into()).await?;
//!
//! let consumer = stream.get_or_create_consumer("consumer", async_nats::jetstream::consumer::pull::Config {
//!     durable_name: Some("consumer".to_string()),
//!     ..Default::default()
//! }).await?;
//!
//! let mut messages = consumer.messages().await?.take(100);
//! while let Ok(Some(message)) = messages.try_next().await {
//!   println!("message receiver: {:?}", message);
//!   message.ack().await?;
//! }
//! Ok(())
//! # }
//! ```
//!
//! ```no_run
//! # #[tokio::main]
//! # async fn mains() -> Result<(), async_nats::Error> {
//! use futures::StreamExt;
//! use futures::TryStreamExt;
//!
//! let client = async_nats::connect("localhost:4222").await?;
//! let jetstream = async_nats::jetstream::new(client);
//!
//! let stream = jetstream.get_or_create_stream(async_nats::jetstream::stream::Config {
//!     name: "events".to_string(),
//!     max_messages: 10_000,
//!     ..Default::default()
//! }).await?;
//!
//! jetstream.publish("events".to_string(), "data".into()).await?;
//!
//! let consumer = stream.get_or_create_consumer("consumer", async_nats::jetstream::consumer::pull::Config {
//!     durable_name: Some("consumer".to_string()),
//!     ..Default::default()
//! }).await?;
//!
//! let mut batches = consumer.sequence(50)?.take(10);
//! while let Ok(Some(mut batch)) = batches.try_next().await {
//!     while let Some(Ok(message)) = batch.next().await {
//!         println!("message receiver: {:?}", message);
//!         message.ack().await?;
//!     }
//! }
//! Ok(())
//! # }
//! ```

use crate::Client;

pub mod account;
pub mod consumer;
pub mod context;
pub mod kv;
pub mod message;
pub mod object_store;
pub mod publish;
pub mod response;
pub mod stream;

pub use context::Context;
pub use message::{AckKind, Message};

/// Creates a new JetStream [Context] that provides JetStream API for managing and using [Streams][crate::jetstream::stream::Stream],
/// [Consumers][crate::jetstream::consumer::Consumer], key value and object store.
///
/// # Examples
///
/// ```no_run
/// # #[tokio::main]
/// # async fn main() -> Result<(), async_nats::Error> {
///
/// let client = async_nats::connect("localhost:4222").await?;
/// let jetstream = async_nats::jetstream::new(client);
///
/// jetstream.publish("subject".to_string(), "data".into()).await?;
/// # Ok(())
/// # }
/// ```
pub fn new(client: Client) -> Context {
    Context::new(client)
}

/// Creates a new JetStream [Context] with given JetStream domain.
///
/// # Examples
///
/// ```no_run
/// # #[tokio::main]
/// # async fn main() -> Result<(), async_nats::Error> {
///
/// let client = async_nats::connect("localhost:4222").await?;
/// let jetstream = async_nats::jetstream::with_domain(client, "hub");
///
/// jetstream.publish("subject".to_string(), "data".into()).await?;
/// # Ok(())
/// # }
/// ```
pub fn with_domain<T: AsRef<str>>(client: Client, domain: T) -> Context {
    context::Context::with_domain(client, domain)
}

/// Creates a new JetStream [Context] with given JetStream prefix.
/// By default it is `$JS.API`.
/// # Examples
///
/// ```no_run
/// # #[tokio::main]
/// # async fn main() -> Result<(), async_nats::Error> {
///
/// let client = async_nats::connect("localhost:4222").await?;
/// let jetstream = async_nats::jetstream::with_prefix(client, "JS.acc@hub.API");
///
/// jetstream.publish("subject".to_string(), "data".into()).await?;
/// # Ok(())
/// # }
/// ```
pub fn with_prefix(client: Client, prefix: &str) -> Context {
    context::Context::with_prefix(client, prefix)
}