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README.md
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README.md
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# sal
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# SAL (System Abstraction Layer)
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A Rust library that provides a unified interface for interacting with operating system features across different platforms. It abstracts away platform-specific details, allowing developers to write cross-platform code with ease.
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## Features
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- **File System Operations**: Simplified file and directory management
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- **Process Management**: Create, monitor, and control processes
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- **System Information**: Access system details and metrics
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- **Git Integration**: Interface with Git repositories
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- **Redis Client**: Robust Redis connection management and command execution
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- **Text Processing**: Utilities for text manipulation and formatting
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## Modules
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### Redis Client
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The Redis client module provides a robust wrapper around the Redis client library for Rust, offering:
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- Automatic connection management and reconnection
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- Support for both Unix socket and TCP connections
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- Database selection via environment variables
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- Thread-safe global client instance
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- Simple command execution interface
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[View Redis Client Documentation](src/redisclient/README.md)
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### OS Module
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Provides platform-independent interfaces for operating system functionality.
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### Git Module
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Tools for interacting with Git repositories programmatically.
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### Process Module
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Utilities for process creation, monitoring, and management.
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### Text Module
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Text processing utilities for common operations.
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## Usage
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Add this to your `Cargo.toml`:
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```toml
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[dependencies]
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sal = "0.1.0"
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```
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Basic example:
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```rust
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use sal::redisclient::execute;
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use redis::cmd;
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fn main() -> redis::RedisResult<()> {
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// Execute a Redis command
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let mut cmd = redis::cmd("SET");
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cmd.arg("example_key").arg("example_value");
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execute(&mut cmd)?;
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// Retrieve the value
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let mut get_cmd = redis::cmd("GET");
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get_cmd.arg("example_key");
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let value: String = execute(&mut get_cmd)?;
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println!("Value: {}", value);
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Ok(())
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}
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```
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in @/sal/git/git_executor.rs
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create a GitExecutor which is the one executing git commands
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and also checking if ssh-agent is loaded
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or if there is an authentication mechanism defined in redis
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how is this done use src/env/redisclient.rs
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this allows us to execute redis commands
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check there is herocontext:git in the redis
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if yes fetch the object, its a json representing a struct
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- status (error, ok) as enum
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- auth which is a map
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- key is the server part of our git url (see parse_git_url in git module)
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- val is another object with following properties
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- sshagent as bool (means if set just use loaded sshagent)
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- key (is the sshkey as needs to be used when talking to the server)
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- username (if username then there needs to be a password)
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- password
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we need to deserialize this struct
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this now tells based on the server name how to authenticate for the git server
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if sshagent then rest needs to be empty
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if key rest needs to be empty
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if username then password set, rest empty
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the git executor needs to use above to talk in right way to the server
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src/process/README.md
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src/process/README.md
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# Process Module
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====================
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## Overview
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The process module is responsible for managing and running system processes.
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## Usage
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To use the process module, import it in your Rust file and call the desired functions.
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## Functions
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### mgmt.rs
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The mgmt.rs file contains functions for managing system processes.
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### run.rs
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The run.rs file contains functions for running system processes.
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#### Input Flexibility
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The `run` function in run.rs is designed to be flexible with its input:
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1. **One-liner Commands**: If the input is a single line, it's treated as a command with arguments.
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```rust
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run("ls -la"); // Runs the 'ls -la' command
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```
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2. **Multi-line Scripts**: If the input contains newlines, it's treated as a script. The script is automatically dedented using the `dedent` function from `src/text/dedent.rs` before execution.
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```rust
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run(" echo 'Hello'\n ls -la"); // Common indentation is removed before execution
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```
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## Examples
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### Example 1: Running a Process
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To run a process, use the `run` function from the `run.rs` file:
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```rust
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use process::run;
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fn main() {
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run("ls -l");
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}
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```
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### Example 2: Running a Multi-line Script
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```rust
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use process::run;
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fn main() {
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let result = run(r#"
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echo "Hello, world!"
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ls -la
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echo "Script complete"
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"#);
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}
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```
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### Example 2: Managing a Process
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To manage a process, use the `mgmt` function from the `mgmt.rs` file:
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```rust
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use process::mgmt;
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fn main() {
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mgmt("start");
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}
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```
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## Automatic Dedentation
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When a multi-line script is provided to the `run` function, it automatically uses the `dedent` function from `src/text/dedent.rs` to remove common leading whitespace from all lines. This allows you to write scripts with proper indentation in your code without affecting the execution.
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For example, this indented script:
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```rust
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run(r#"
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echo "This line has 4 spaces of indentation in the source"
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echo "This line also has 4 spaces"
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echo "This line has 8 spaces (4 more than the common indentation)"
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"#);
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```
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Will be executed with the common indentation (4 spaces) removed, preserving only the relative indentation between lines.
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src/redisclient/README.md
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src/redisclient/README.md
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# Redis Client Module
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A robust Redis client wrapper for Rust applications that provides connection management, automatic reconnection, and a simple interface for executing Redis commands.
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## Features
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- **Singleton Pattern**: Maintains a global Redis client instance, so we don't re-int all the time.
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- **Connection Management**: Automatically handles connection creation and reconnection
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- **Flexible Connectivity**:
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- Tries Unix socket connection first (`$HOME/hero/var/myredis.sock`)
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- Falls back to TCP connection (localhost) if socket connection fails
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- **Database Selection**: Uses the `REDISDB` environment variable to select the Redis database (defaults to 0)
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- **Error Handling**: Comprehensive error handling with detailed error messages
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- **Thread Safety**: Safe to use in multi-threaded applications
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## Usage
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### Basic Usage
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```rust
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use crate::redisclient::execute;
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use redis::cmd;
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// Execute a simple SET command
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let mut set_cmd = redis::cmd("SET");
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set_cmd.arg("my_key").arg("my_value");
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let result: redis::RedisResult<()> = execute(&mut set_cmd);
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// Execute a GET command
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let mut get_cmd = redis::cmd("GET");
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get_cmd.arg("my_key");
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let value: redis::RedisResult<String> = execute(&mut get_cmd);
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if let Ok(val) = value {
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println!("Value: {}", val);
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}
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```
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### Advanced Usage
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```rust
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use crate::redisclient::{get_redis_client, reset};
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// Get the Redis client directly
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let client = get_redis_client()?;
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// Execute a command using the client
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let mut cmd = redis::cmd("HSET");
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cmd.arg("my_hash").arg("field1").arg("value1");
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let result: redis::RedisResult<()> = client.execute(&mut cmd);
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// Reset the Redis client connection
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reset()?;
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```
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## Environment Variables
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- `REDISDB`: Specifies the Redis database number to use (default: 0)
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- `HOME`: Used to determine the path to the Redis Unix socket
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## Connection Strategy
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1. First attempts to connect via Unix socket at `$HOME/hero/var/myredis.sock`
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2. If socket connection fails, falls back to TCP connection at `redis://127.0.0.1/`
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3. If both connection methods fail, returns an error
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## Error Handling
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The module provides detailed error messages that include:
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- The connection method that failed
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- The path to the socket that was attempted
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- The underlying Redis error
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## Testing
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The module includes both unit tests and integration tests:
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- Unit tests that mock Redis functionality
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- Integration tests that require a real Redis server
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- Tests automatically skip if Redis is not available
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## Thread Safety
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The Redis client is wrapped in an `Arc<Mutex<>>` to ensure thread safety when accessing the global instance.
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