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

use std::collections::BTreeMap;

use testcontainers::{core::WaitFor, Image};

const DEFAULT_IMAGE_NAME: &str = "hashicorp/consul";
const DEFAULT_IMAGE_TAG: &str = "1.16.1";
const CONSUL_LOCAL_CONFIG: &str = "CONSUL_LOCAL_CONFIG";

/// Module to work with [`Consul`] inside of tests.
///
/// This module is based on the official [`Consul docker image`].
///
/// # Example
/// ```
/// use testcontainers_modules::{consul, testcontainers::runners::SyncRunner};
///
/// let consul = consul::Consul::default().start().unwrap();
/// let http_port = consul.get_host_port_ipv4(8500).unwrap();
///
/// // do something with the started consul instance..
/// ```
///
/// [`Consul`]: https://www.consul.io/
/// [`Consul docker image`]: https://hub.docker.com/r/hashicorp/consul
#[derive(Debug)]
pub struct Consul {
    name: String,
    tag: String,
    env_vars: BTreeMap<String, String>,
}

impl Default for Consul {
    fn default() -> Self {
        Consul::new(
            DEFAULT_IMAGE_NAME.to_string(),
            DEFAULT_IMAGE_TAG.to_string(),
        )
    }
}

impl Consul {
    fn new(name: String, tag: String) -> Self {
        Consul {
            name,
            tag,
            env_vars: Default::default(),
        }
    }

    pub fn with_local_config(self, config: String) -> Self {
        let mut env_vars = self.env_vars;
        env_vars.insert(CONSUL_LOCAL_CONFIG.to_owned(), config);
        Self { env_vars, ..self }
    }
}

impl Image for Consul {
    type Args = ();

    fn name(&self) -> String {
        self.name.clone()
    }

    fn tag(&self) -> String {
        self.tag.clone()
    }

    fn ready_conditions(&self) -> Vec<WaitFor> {
        vec![WaitFor::message_on_stdout("agent: Consul agent running!")]
    }

    fn env_vars(&self) -> Box<dyn Iterator<Item = (&String, &String)> + '_> {
        Box::new(self.env_vars.iter())
    }
}

#[cfg(test)]
mod tests {
    use serde_json::Value;

    use crate::{consul::Consul, testcontainers::runners::AsyncRunner};

    #[tokio::test]
    async fn consul_container() -> Result<(), Box<dyn std::error::Error + 'static>> {
        let consul = Consul::default().with_local_config("{\"datacenter\":\"dc-rust\"}".to_owned());
        let node = consul.start().await?;
        let port = node.get_host_port_ipv4(8500).await?;

        let response = reqwest::Client::new()
            .get(format!("http://localhost:{}/v1/agent/self", port))
            .send()
            .await
            .unwrap()
            .json::<Value>()
            .await
            .unwrap();
        let config = response.as_object().unwrap().get("Config").unwrap();
        let dc = config
            .as_object()
            .unwrap()
            .get("Datacenter")
            .unwrap()
            .as_str()
            .unwrap();
        assert_eq!("dc-rust", dc);
        Ok(())
    }
}