br_cache/
lib.rs

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use crate::redis::Redis;
use json::{JsonValue};
use serde::{Deserialize, Serialize};
use std::collections::BTreeMap;
use std::fs;
use std::path::PathBuf;

pub mod redis;

#[derive(Clone)]
pub enum Cache {
    Redis(Redis),
    None,
}

impl Cache {
    pub fn new(config: Config) -> Result<Self, String> {
        let connection = config
            .connections
            .get(config.default.as_str())
            .unwrap()
            .clone();
        Cache::login(
            connection.mode,
            &connection.hostname,
            &connection.hostport,
            &connection.userpass,
        )
    }
    /// 登录缓存
    pub fn login(
        cache_mode: CacheMode,
        host: &str,
        port: &str,
        pass: &str,
    ) -> Result<Self, String> {
        let res = match cache_mode {
            CacheMode::Redis => {
                let dsn = if pass.is_empty() {
                    format!("redis://{host}:{port}/")
                } else {
                    format!("redis://:{pass}@{host}:{port}/")
                };
                Cache::Redis(Redis::connect(dsn)?)
            }
        };
        Ok(res)
    }

    pub fn db(&mut self, db: i8) -> &mut Self {
        match self {
            Cache::Redis(e) => {
                e.db(db);
            }
            Cache::None => {}
        }
        self
    }
    /// 设置缓存
    /// * key
    /// * value
    /// * expiration_date 过期时间 秒
    pub fn add(
        &mut self,
        key: &str,
        value: JsonValue,
        expiration_date: u64,
    ) -> Result<bool, String> {
        let res = match self {
            Cache::Redis(e) => e.add(key, value, expiration_date)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }
    pub fn get(&mut self, key: &str) -> Result<JsonValue, String> {
        let res = match self {
            Cache::Redis(e) => e.get(key)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }
    /// 删除缓存
    pub fn delete(&mut self, key: &str) -> Result<bool, String> {
        let res = match self {
            Cache::Redis(e) => e.delete(key)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }

    pub fn exists(&mut self, key: &str) -> Result<bool, String> {
        let res = match self {
            Cache::Redis(e) => e.exists(key)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }

    /// 查询KEY缓存
    pub fn keys(&mut self, key: &str) -> Result<JsonValue, String> {
        let res = match self {
            Cache::Redis(e) => e.keys(key)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }

    /// 集合-添加缓存
    pub fn set_add(&mut self, key: &str, value: JsonValue) -> Result<bool, String> {
        let res = match self {
            Cache::Redis(e) => e.set_add(key, value)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }
    /// 集合 获取缓存
    pub fn set_get(&mut self, key: &str) -> Result<JsonValue, String> {
        let res = match self {
            Cache::Redis(e) => e.set_get(key)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }

    /// 集合 删除缓存
    pub fn set_delete(&mut self, key: &str, value: JsonValue) -> Result<bool, String> {
        let res = match self {
            Cache::Redis(e) => e.set_delete(key, value)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }

    /// 设置消息队列
    pub fn set_message_queue(&mut self, key: &str, value: JsonValue) -> Result<bool, String> {
        match self {
            Cache::Redis(e) => e.set_message_queue(key, value),
            Cache::None => Err("error".to_string()),
        }
    }
    /// 获取消息队列
    pub fn get_message_queue(&mut self, key: &str) -> Result<JsonValue, String> {
        match self {
            Cache::Redis(e) => Ok(e.get_message_queue(key)?),
            Cache::None => Err("error".to_string()),
        }
    }
    pub fn set_object(&mut self, key: &str, field: &str, value: JsonValue) -> Result<bool, String> {
        let res = match self {
            Cache::Redis(e) => e.set_object(key, field, value)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }
    /// 获取哈希值
    pub fn get_object(&mut self, key: &str) -> Result<JsonValue, String> {
        let res = match self {
            Cache::Redis(e) => e.get_object(key)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }
    /// 哈希-添加
    pub fn add_hash(&mut self, key: &str, field: &str, value: JsonValue) -> Result<bool, String> {
        let res = match self {
            Cache::Redis(e) => e.add_hash(key, field, value)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }
    /// 哈希-删除
    pub fn delete_hash(&mut self, key: &str, field: &str) -> Result<bool, String> {
        let res = match self {
            Cache::Redis(e) => e.delete_hash(key, field)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }
    /// 哈希-获取指定字段的值
    pub fn get_hash_field_value(&mut self, key: &str, field: &str) -> Result<JsonValue, String> {
        let res = match self {
            Cache::Redis(e) => e.get_hash_field_value(key, field)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }
    /// 哈希-获取所有字段
    pub fn get_hash_fields(&mut self, key: &str) -> Result<JsonValue, String> {
        let res = match self {
            Cache::Redis(e) => e.get_hash_fields(key)?,
            Cache::None => return Err("error".to_string()),
        };
        Ok(res)
    }
}

pub trait CacheBase {
    /// 选择数据库
    fn db(&mut self, db: i8) -> &mut Self;
    /// 设置缓存
    ///
    /// * expiration_date 过期时间 s 秒
    fn add(&mut self, key: &str, value: JsonValue, expiration_date: u64) -> Result<bool, String>;
    /// 获取缓存
    fn get(&mut self, key: &str) -> Result<JsonValue, String>;
    /// 删除缓存
    fn delete(&mut self, key: &str) -> Result<bool, String>;
    /// exists 判断KEY是否存在
    /// * key 键
    fn exists(&mut self, key: &str) -> Result<bool, String>;
    /// 查询 KEY
    /// * key 键 格式 * 或 *#### 模糊查询
    fn keys(&mut self, key: &str) -> Result<JsonValue, String>;

    /// 集合 添加
    fn set_add(&mut self, key: &str, value: JsonValue) -> Result<bool, String>;
    /// 集合 获取
    fn set_get(&mut self, key: &str) -> Result<JsonValue, String>;
    /// 集合 删除
    fn set_delete(&mut self, key: &str, value: JsonValue) -> Result<bool, String>;
    /// 设置消息队列
    fn set_message_queue(&mut self, key: &str, value: JsonValue) -> Result<bool, String>;
    /// 获取消息队列
    fn get_message_queue(&mut self, key: &str) -> Result<JsonValue, String>;
    fn set_object(&mut self, key: &str, field: &str, value: JsonValue) -> Result<bool, String>;
    /// 获取哈希值
    fn get_object(&mut self, key: &str) -> Result<JsonValue, String>;
    /// 添加哈希
    fn add_hash(&mut self, key: &str, field: &str, value: JsonValue) -> Result<bool, String>;
    /// 获取哈希指定key的字段值
    fn get_hash_field_value(&mut self, key: &str, field: &str) -> Result<JsonValue, String>;
    /// 获取key下所有的field
    fn get_hash_fields(&mut self, key: &str) -> Result<JsonValue, String>;
    /// 删除哈希指定key的字段
    fn delete_hash(&mut self, key: &str, field: &str) -> Result<bool, String>;
}

#[derive(Clone, Debug, Deserialize, Serialize)]
pub struct Config {
    pub default: String,
    pub connections: BTreeMap<String, Connection>,
}

impl Default for Config {
    fn default() -> Self {
        Self::new()
    }
}

impl Config {
    pub fn create(config_file: PathBuf) -> Config {
        let data = Config::new();
        match fs::read_to_string(config_file.clone()) {
            Ok(e) => toml::from_str::<Config>(&e).unwrap_or_else(|_| {
                if e.contains(format!("#{}", env!("CARGO_PKG_NAME")).as_str()) {
                    return data;
                }
                let toml = toml::to_string(&data).unwrap();
                let toml = format!("\r\n#{}\r\n{}{}", env!("CARGO_PKG_NAME"), toml, e);
                let _ = fs::write(config_file.to_str().unwrap(), toml);
                data
            }),
            Err(_) => {
                let toml = toml::to_string(&data).unwrap();
                let _ = fs::write(config_file.to_str().unwrap(), toml);
                data
            }
        }
    }
    pub fn new() -> Config {
        let mut connections = BTreeMap::new();
        connections.insert("my_name".to_string(), Connection::default());
        Self {
            default: "my_name".to_string(),
            connections,
        }
    }
}

#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct Connection {
    pub mode: CacheMode,
    pub hostname: String,
    pub hostport: String,
    pub userpass: String,
}
impl Default for Connection {
    fn default() -> Self {
        Self {
            mode: CacheMode::Redis,
            hostname: "127.0.0.1".to_string(),
            hostport: "6379".to_string(),
            userpass: "".to_string(),
        }
    }
}
impl Connection {
    pub fn from(&mut self, data: JsonValue) -> &mut Connection {
        self.mode = CacheMode::from(data["mode"].as_str().unwrap());
        self.hostname = data["hostname"].to_string();
        self.hostport = data["hostport"].to_string();
        self.userpass = data["userpass"].to_string();
        self
    }
}

#[derive(Clone, Debug, Serialize, Deserialize)]
pub enum CacheMode {
    Redis,
}

impl CacheMode {
    pub fn str(&mut self) -> String {
        match self {
            CacheMode::Redis => "redis",
        }
            .to_string()
    }
    pub fn from(name: &str) -> Self {
        match name {
            "redis" => CacheMode::Redis,
            _ => CacheMode::Redis,
        }
    }
}