starlane 0.3.19

Starlane -- An Orchestration and Infrastructure Framework for WebAssembly Components (https://starlane.io) This packaged manages `HyperSpace` which provides infrastructure for `Space` Apis (WebAssembly & external programs meant to provide custom behaviors in Starlane), This package references the `starlane-space` package and reuses of it to run the infrastructure and it also contains mechanisms (Drivers) for extending the Starlane Type system
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
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

use tokio::fs;
use crate::env::{STARLANE_DATA_DIR, STARLANE_REGISTRY_PASSWORD, STARLANE_REGISTRY_USER};
use crate::registry::err::RegErr;
use crate::{Database, PgRegistryConfig, StarlaneConfig};
use derive_builder::Builder;
use serde::{Deserialize, Serialize};
use std::path::PathBuf;
use std::time::Duration;
use postgresql_embedded::{PostgreSQL, Settings};
use sqlx::PgPool;
use starlane::space::parse::set;

pub struct Postgres {
    config: Database<PgEmbedSettings>,
    postgres: PostgreSQL
}

impl Postgres {

    pub fn url(&self) -> String {
        self.postgres.settings().url("postgres")
    }


    /*
    fn postgresql(config: &Database<PgEmbedSettings> ) -> Settings
    {
        let mut settings = Settings::default();
        settings.temporary = false;
        settings.port = 5432;
        settings
    }

     */


    fn postgresql(config: &Database<PgEmbedSettings> ) -> Settings
    {
        let mut settings = Settings::default();
        settings.data_dir = format!("{}/registry",config.database_dir).to_string().into();
        settings.password_file = format!("{}/.password",config.database_dir).to_string().into();
        settings.port = 5432u16;
        settings.temporary = !config.persistent;
        settings.username = config.user.clone();
        settings.password = config.password.clone();
        settings
    }



    pub async fn install( config: &Database<PgEmbedSettings>) -> Result<(), RegErr> {

        let settings = Self::postgresql(config);
        fs::create_dir_all(&settings.data_dir).await?;

        let mut postgres = PostgreSQL::new(settings);

        postgres.setup().await?;
        postgres.start().await?;

        if !postgres.database_exists(&config.database).await? {
            postgres.create_database(&config.database).await?;
        }
       postgres.stop().await?;

        Ok(())
    }



    pub async fn new(config: &Database<PgEmbedSettings>) -> Result<Self, RegErr> {

        let mut postgres = PostgreSQL::new(Self::postgresql(config));

        let config = config.clone();
        Ok(Self { postgres, config })
    }

    /// as long as the Sender is alive
    ///
    pub async fn start(mut self) -> Result<tokio::sync::mpsc::Sender<()>, RegErr> {
        self.postgres.setup().await?;
        self.postgres.start().await?;
        let (tx, mut rx) = tokio::sync::mpsc::channel::<()>(1);
        let blah = self;
        tokio::spawn(
            async move {
                while let Some(_) = rx.recv().await {
                    blah.url();
                }
            }
        );


        Ok(tx)
    }

}

impl Drop for Postgres {
    fn drop(&mut self) {
        let handler = tokio::runtime::Handle::current();
        let mut postgres = self.postgres.clone();
        handler.block_on( async move{
            postgres.stop().await.unwrap_or_default();
        });
    }
}

#[derive(Builder, Clone, Serialize, Deserialize,Eq,PartialEq,Hash)]
pub struct PgEmbedSettings {
    pub port: u16,
    pub user: String,
    pub password: String,
    pub auth_method: PgEmbedAuthMethod,
    pub persistent: bool,
    pub database_dir: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub timeout: Option<Duration>,
}


impl Default for PgEmbedSettings {
    fn default() -> Self {
        Self {
            database_dir: format!("{}/postgres", STARLANE_DATA_DIR.to_string()).to_string(),
            port: 5432,
            user: STARLANE_REGISTRY_USER.to_string(),
            password: STARLANE_REGISTRY_PASSWORD.to_string(),
            auth_method: Default::default(),
            persistent: true,
            timeout: Some(Duration::from_secs(5)),
        }
    }
}

#[derive(Clone, Serialize, Deserialize,Eq,PartialEq,Hash)]
pub enum PgEmbedAuthMethod {
    Plain,
    MD5,
    ScramSha256,
}



impl Default for PgEmbedAuthMethod {
    fn default() -> Self {
        PgEmbedAuthMethod::Plain
    }
}