diff --git a/solutions/go/02-rg2/code/.codecrafters/compile.sh b/solutions/go/02-rg2/code/.codecrafters/compile.sh new file mode 100755 index 00000000..99120b97 --- /dev/null +++ b/solutions/go/02-rg2/code/.codecrafters/compile.sh @@ -0,0 +1,11 @@ +#!/bin/sh +# +# This script is used to compile your program on CodeCrafters +# +# This runs before .codecrafters/run.sh +# +# Learn more: https://codecrafters.io/program-interface + +set -e # Exit on failure + +go build -o /tmp/codecrafters-build-redis-go app/*.go diff --git a/solutions/go/02-rg2/code/.codecrafters/run.sh b/solutions/go/02-rg2/code/.codecrafters/run.sh new file mode 100755 index 00000000..c67e187c --- /dev/null +++ b/solutions/go/02-rg2/code/.codecrafters/run.sh @@ -0,0 +1,11 @@ +#!/bin/sh +# +# This script is used to run your program on CodeCrafters +# +# This runs after .codecrafters/compile.sh +# +# Learn more: https://codecrafters.io/program-interface + +set -e # Exit on failure + +exec /tmp/codecrafters-build-redis-go "$@" diff --git a/solutions/go/02-rg2/code/.gitattributes b/solutions/go/02-rg2/code/.gitattributes new file mode 100644 index 00000000..176a458f --- /dev/null +++ b/solutions/go/02-rg2/code/.gitattributes @@ -0,0 +1 @@ +* text=auto diff --git a/solutions/go/02-rg2/code/README.md b/solutions/go/02-rg2/code/README.md new file mode 100644 index 00000000..c808b2b0 --- /dev/null +++ b/solutions/go/02-rg2/code/README.md @@ -0,0 +1,33 @@ +![progress-banner](https://codecrafters.io/landing/images/default_progress_banners/redis.png) + +This is a starting point for Go solutions to the +["Build Your Own Redis" Challenge](https://codecrafters.io/challenges/redis). + +In this challenge, you'll build a toy Redis clone that's capable of handling +basic commands like `PING`, `SET` and `GET`. Along the way we'll learn about +event loops, the Redis protocol and more. + +**Note**: If you're viewing this repo on GitHub, head over to +[codecrafters.io](https://codecrafters.io) to try the challenge. + +# Passing the first stage + +The entry point for your Redis implementation is in `app/server.go`. Study and +uncomment the relevant code, and push your changes to pass the first stage: + +```sh +git commit -am "pass 1st stage" # any msg +git push origin master +``` + +That's all! + +# Stage 2 & beyond + +Note: This section is for stages 2 and beyond. + +1. Ensure you have `go (1.19)` installed locally +1. Run `./your_program.sh` to run your Redis server, which is implemented in + `app/server.go`. +1. Commit your changes and run `git push origin master` to submit your solution + to CodeCrafters. Test output will be streamed to your terminal. diff --git a/solutions/go/02-rg2/code/app/server.go b/solutions/go/02-rg2/code/app/server.go new file mode 100644 index 00000000..c625ddd1 --- /dev/null +++ b/solutions/go/02-rg2/code/app/server.go @@ -0,0 +1,21 @@ +package main + +import ( + "fmt" + "net" + "os" +) + +func main() { + l, err := net.Listen("tcp", "0.0.0.0:6379") + if err != nil { + fmt.Println("Failed to bind to port 6379") + os.Exit(1) + } + conn, err := l.Accept() + if err != nil { + fmt.Println("Error accepting connection: ", err.Error()) + os.Exit(1) + } + conn.Write([]byte("+PONG\r\n")) +} diff --git a/solutions/go/02-rg2/code/codecrafters.yml b/solutions/go/02-rg2/code/codecrafters.yml new file mode 100644 index 00000000..77886cfb --- /dev/null +++ b/solutions/go/02-rg2/code/codecrafters.yml @@ -0,0 +1,11 @@ +# Set this to true if you want debug logs. +# +# These can be VERY verbose, so we suggest turning them off +# unless you really need them. +debug: false + +# Use this to change the Go version used to run your code +# on Codecrafters. +# +# Available versions: go-1.22 +language_pack: go-1.22 diff --git a/solutions/go/02-rg2/code/go.mod b/solutions/go/02-rg2/code/go.mod new file mode 100644 index 00000000..a8e2d2af --- /dev/null +++ b/solutions/go/02-rg2/code/go.mod @@ -0,0 +1,11 @@ +// DON'T EDIT THIS! +// +// Codecrafters relies on this file being intact to run tests successfully. Any changes +// here will not reflect when CodeCrafters tests your code, and might even cause build +// failures. +// +// DON'T EDIT THIS! + +module github.com/codecrafters-io/redis-starter-go + +go 1.22 diff --git a/solutions/go/02-rg2/code/go.sum b/solutions/go/02-rg2/code/go.sum new file mode 100644 index 00000000..e69de29b diff --git a/solutions/go/02-rg2/code/your_program.sh b/solutions/go/02-rg2/code/your_program.sh new file mode 100755 index 00000000..8b5fdeb7 --- /dev/null +++ b/solutions/go/02-rg2/code/your_program.sh @@ -0,0 +1,24 @@ +#!/bin/sh +# +# Use this script to run your program LOCALLY. +# +# Note: Changing this script WILL NOT affect how CodeCrafters runs your program. +# +# Learn more: https://codecrafters.io/program-interface + +set -e # Exit early if any commands fail + +# Copied from .codecrafters/compile.sh +# +# - Edit this to change how your program compiles locally +# - Edit .codecrafters/compile.sh to change how your program compiles remotely +( + cd "$(dirname "$0")" # Ensure compile steps are run within the repository directory + go build -o /tmp/codecrafters-build-redis-go app/*.go +) + +# Copied from .codecrafters/run.sh +# +# - Edit this to change how your program runs locally +# - Edit .codecrafters/run.sh to change how your program runs remotely +exec /tmp/codecrafters-build-redis-go "$@" diff --git a/solutions/go/02-rg2/diff/app/server.go.diff b/solutions/go/02-rg2/diff/app/server.go.diff new file mode 100644 index 00000000..750b0734 --- /dev/null +++ b/solutions/go/02-rg2/diff/app/server.go.diff @@ -0,0 +1,27 @@ +@@ -1,24 +1,21 @@ + package main + + import ( + "fmt" + "net" + "os" + ) + +-// Ensures gofmt doesn't remove the "net" and "os" imports in stage 1 (feel free to remove this!) +-var _ = net.Listen +-var _ = os.Exit +- + func main() { + l, err := net.Listen("tcp", "0.0.0.0:6379") + if err != nil { + fmt.Println("Failed to bind to port 6379") + os.Exit(1) + } +- _, err = l.Accept() ++ conn, err := l.Accept() + if err != nil { + fmt.Println("Error accepting connection: ", err.Error()) + os.Exit(1) + } ++ conn.Write([]byte("+PONG\r\n")) + } diff --git a/solutions/go/02-rg2/explanation.md b/solutions/go/02-rg2/explanation.md new file mode 100644 index 00000000..d1e9f947 --- /dev/null +++ b/solutions/go/02-rg2/explanation.md @@ -0,0 +1,26 @@ +The entry point for your Redis implementation is in `app/server.go`. + +Study and uncomment the relevant code: + +```go +// Uncomment this block to pass the first stage + +l, err := net.Listen("tcp", "0.0.0.0:6379") +if err != nil { + fmt.Println("Failed to bind to port 6379") + os.Exit(1) +} +_, err = l.Accept() +if err != nil { + fmt.Println("Error accepting connection: ", err.Error()) + os.Exit(1) +} +``` + +Push your changes to pass the first stage: + +``` +git add . +git commit -m "pass 1st stage" # any msg +git push origin master +``` diff --git a/solutions/java/02-rg2/code/.codecrafters/compile.sh b/solutions/java/02-rg2/code/.codecrafters/compile.sh new file mode 100755 index 00000000..4380e12a --- /dev/null +++ b/solutions/java/02-rg2/code/.codecrafters/compile.sh @@ -0,0 +1,11 @@ +#!/bin/sh +# +# This script is used to compile your program on CodeCrafters +# +# This runs before .codecrafters/run.sh +# +# Learn more: https://codecrafters.io/program-interface + +set -e # Exit on failure + +mvn -B package -Ddir=/tmp/codecrafters-build-redis-java diff --git a/solutions/java/02-rg2/code/.codecrafters/run.sh b/solutions/java/02-rg2/code/.codecrafters/run.sh new file mode 100755 index 00000000..c7683250 --- /dev/null +++ b/solutions/java/02-rg2/code/.codecrafters/run.sh @@ -0,0 +1,11 @@ +#!/bin/sh +# +# This script is used to run your program on CodeCrafters +# +# This runs after .codecrafters/compile.sh +# +# Learn more: https://codecrafters.io/program-interface + +set -e # Exit on failure + +exec java -jar /tmp/codecrafters-build-redis-java/codecrafters-redis.jar "$@" diff --git a/solutions/java/02-rg2/code/.gitattributes b/solutions/java/02-rg2/code/.gitattributes new file mode 100644 index 00000000..176a458f --- /dev/null +++ b/solutions/java/02-rg2/code/.gitattributes @@ -0,0 +1 @@ +* text=auto diff --git a/solutions/java/02-rg2/code/.gitignore b/solutions/java/02-rg2/code/.gitignore new file mode 100644 index 00000000..a48b18a1 --- /dev/null +++ b/solutions/java/02-rg2/code/.gitignore @@ -0,0 +1,3 @@ +*.jar +target/ +.idea/ diff --git a/solutions/java/02-rg2/code/README.md b/solutions/java/02-rg2/code/README.md new file mode 100644 index 00000000..9aa3c645 --- /dev/null +++ b/solutions/java/02-rg2/code/README.md @@ -0,0 +1,34 @@ +![progress-banner](https://codecrafters.io/landing/images/default_progress_banners/redis.png) + +This is a starting point for Java solutions to the +["Build Your Own Redis" Challenge](https://codecrafters.io/challenges/redis). + +In this challenge, you'll build a toy Redis clone that's capable of handling +basic commands like `PING`, `SET` and `GET`. Along the way we'll learn about +event loops, the Redis protocol and more. + +**Note**: If you're viewing this repo on GitHub, head over to +[codecrafters.io](https://codecrafters.io) to try the challenge. + +# Passing the first stage + +The entry point for your Redis implementation is in `src/main/java/Main.java`. +Study and uncomment the relevant code, and push your changes to pass the first +stage: + +```sh +git commit -am "pass 1st stage" # any msg +git push origin master +``` + +That's all! + +# Stage 2 & beyond + +Note: This section is for stages 2 and beyond. + +1. Ensure you have `mvn` installed locally +1. Run `./your_program.sh` to run your Redis server, which is implemented in + `src/main/java/Main.java`. +1. Commit your changes and run `git push origin master` to submit your solution + to CodeCrafters. Test output will be streamed to your terminal. diff --git a/solutions/java/02-rg2/code/codecrafters.yml b/solutions/java/02-rg2/code/codecrafters.yml new file mode 100644 index 00000000..2406954b --- /dev/null +++ b/solutions/java/02-rg2/code/codecrafters.yml @@ -0,0 +1,11 @@ +# Set this to true if you want debug logs. +# +# These can be VERY verbose, so we suggest turning them off +# unless you really need them. +debug: false + +# Use this to change the Java version used to run your code +# on Codecrafters. +# +# Available versions: java-23 +language_pack: java-23 diff --git a/solutions/java/02-rg2/code/pom.xml b/solutions/java/02-rg2/code/pom.xml new file mode 100644 index 00000000..1b269b22 --- /dev/null +++ b/solutions/java/02-rg2/code/pom.xml @@ -0,0 +1,52 @@ + + + 4.0.0 + + io.codecrafters + codecrafters-redis + 1.0 + + + 23 + 23 + UTF-8 + 23 + + + + + + org.apache.maven.plugins + maven-assembly-plugin + + codecrafters-redis + + jar-with-dependencies + + false + + + true + + Main + + + ${dir} + + + + + make-assembly + package + + single + + + + + + + + \ No newline at end of file diff --git a/solutions/java/02-rg2/code/src/main/java/Main.java b/solutions/java/02-rg2/code/src/main/java/Main.java new file mode 100644 index 00000000..f4a8c33d --- /dev/null +++ b/solutions/java/02-rg2/code/src/main/java/Main.java @@ -0,0 +1,32 @@ +import java.io.IOException; +import java.io.OutputStream; +import java.net.ServerSocket; +import java.net.Socket; + +public class Main { + public static void main(String[] args){ + ServerSocket serverSocket = null; + Socket clientSocket = null; + int port = 6379; + try { + serverSocket = new ServerSocket(port); + // Since the tester restarts your program quite often, setting SO_REUSEADDR + // ensures that we don't run into 'Address already in use' errors + serverSocket.setReuseAddress(true); + // Wait for connection from client. + clientSocket = serverSocket.accept(); + OutputStream outputStream = clientSocket.getOutputStream(); + outputStream.write("+PONG\r\n".getBytes()); + } catch (IOException e) { + System.out.println("IOException: " + e.getMessage()); + } finally { + try { + if (clientSocket != null) { + clientSocket.close(); + } + } catch (IOException e) { + System.out.println("IOException: " + e.getMessage()); + } + } + } +} diff --git a/solutions/java/02-rg2/code/your_program.sh b/solutions/java/02-rg2/code/your_program.sh new file mode 100755 index 00000000..c6f54bcd --- /dev/null +++ b/solutions/java/02-rg2/code/your_program.sh @@ -0,0 +1,24 @@ +#!/bin/sh +# +# Use this script to run your program LOCALLY. +# +# Note: Changing this script WILL NOT affect how CodeCrafters runs your program. +# +# Learn more: https://codecrafters.io/program-interface + +set -e # Exit early if any commands fail + +# Copied from .codecrafters/compile.sh +# +# - Edit this to change how your program compiles locally +# - Edit .codecrafters/compile.sh to change how your program compiles remotely +( + cd "$(dirname "$0")" # Ensure compile steps are run within the repository directory + mvn -B package -Ddir=/tmp/codecrafters-build-redis-java +) + +# Copied from .codecrafters/run.sh +# +# - Edit this to change how your program runs locally +# - Edit .codecrafters/run.sh to change how your program runs remotely +exec java -jar /tmp/codecrafters-build-redis-java/codecrafters-redis.jar "$@" diff --git a/solutions/java/02-rg2/diff/src/main/java/Main.java.diff b/solutions/java/02-rg2/diff/src/main/java/Main.java.diff new file mode 100644 index 00000000..78e2e087 --- /dev/null +++ b/solutions/java/02-rg2/diff/src/main/java/Main.java.diff @@ -0,0 +1,33 @@ +@@ -1,29 +1,32 @@ + import java.io.IOException; ++import java.io.OutputStream; + import java.net.ServerSocket; + import java.net.Socket; + + public class Main { + public static void main(String[] args){ + ServerSocket serverSocket = null; + Socket clientSocket = null; + int port = 6379; + try { + serverSocket = new ServerSocket(port); + // Since the tester restarts your program quite often, setting SO_REUSEADDR + // ensures that we don't run into 'Address already in use' errors + serverSocket.setReuseAddress(true); + // Wait for connection from client. + clientSocket = serverSocket.accept(); ++ OutputStream outputStream = clientSocket.getOutputStream(); ++ outputStream.write("+PONG\r\n".getBytes()); + } catch (IOException e) { + System.out.println("IOException: " + e.getMessage()); + } finally { + try { + if (clientSocket != null) { + clientSocket.close(); + } + } catch (IOException e) { + System.out.println("IOException: " + e.getMessage()); + } + } + } + } diff --git a/solutions/java/02-rg2/explanation.md b/solutions/java/02-rg2/explanation.md new file mode 100644 index 00000000..43cdf65d --- /dev/null +++ b/solutions/java/02-rg2/explanation.md @@ -0,0 +1,36 @@ +The entry point for your Redis implementation is in `src/main/java/Main.java`. + +Study and uncomment the relevant code: + +```java +// Uncomment this block to pass the first stage + ServerSocket serverSocket = null; + Socket clientSocket = null; + int port = 6379; + try { + serverSocket = new ServerSocket(port); + // Since the tester restarts your program quite often, setting SO_REUSEADDR + // ensures that we don't run into 'Address already in use' errors + serverSocket.setReuseAddress(true); + // Wait for connection from client. + clientSocket = serverSocket.accept(); + } catch (IOException e) { + System.out.println("IOException: " + e.getMessage()); + } finally { + try { + if (clientSocket != null) { + clientSocket.close(); + } + } catch (IOException e) { + System.out.println("IOException: " + e.getMessage()); + } + } +``` + +Push your changes to pass the first stage: + +``` +git add . +git commit -m "pass 1st stage" # any msg +git push origin master +``` diff --git a/solutions/rust/02-rg2/code/.codecrafters/compile.sh b/solutions/rust/02-rg2/code/.codecrafters/compile.sh new file mode 100755 index 00000000..22e2eba8 --- /dev/null +++ b/solutions/rust/02-rg2/code/.codecrafters/compile.sh @@ -0,0 +1,11 @@ +#!/bin/sh +# +# This script is used to compile your program on CodeCrafters +# +# This runs before .codecrafters/run.sh +# +# Learn more: https://codecrafters.io/program-interface + +set -e # Exit on failure + +cargo build --release --target-dir=/tmp/codecrafters-redis-target --manifest-path Cargo.toml diff --git a/solutions/rust/02-rg2/code/.codecrafters/run.sh b/solutions/rust/02-rg2/code/.codecrafters/run.sh new file mode 100755 index 00000000..ac9e5ca7 --- /dev/null +++ b/solutions/rust/02-rg2/code/.codecrafters/run.sh @@ -0,0 +1,11 @@ +#!/bin/sh +# +# This script is used to run your program on CodeCrafters +# +# This runs after .codecrafters/compile.sh +# +# Learn more: https://codecrafters.io/program-interface + +set -e # Exit on failure + +exec /tmp/codecrafters-redis-target/release/redis-starter-rust "$@" \ No newline at end of file diff --git a/solutions/rust/02-rg2/code/.gitattributes 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Any changes +# here will not reflect when CodeCrafters tests your code, and might even cause build +# failures. +# +# DON'T EDIT THIS! +[package] +name = "redis-starter-rust" +version = "0.1.0" +authors = ["Codecrafters "] +edition = "2021" + +# DON'T EDIT THIS! +# +# Codecrafters relies on this file being intact to run tests successfully. Any changes +# here will not reflect when CodeCrafters tests your code, and might even cause build +# failures. +# +# DON'T EDIT THIS! +[dependencies] +anyhow = "1.0.59" # error handling +bytes = "1.3.0" # helps manage buffers +thiserror = "1.0.32" # error handling +tokio = { version = "1.23.0", features = ["full"] } # async networking diff --git a/solutions/rust/02-rg2/code/README.md b/solutions/rust/02-rg2/code/README.md new file mode 100644 index 00000000..b1857224 --- /dev/null +++ b/solutions/rust/02-rg2/code/README.md @@ -0,0 +1,34 @@ +![progress-banner](https://codecrafters.io/landing/images/default_progress_banners/redis.png) + +This is a starting point for Rust solutions to the +["Build Your Own Redis" Challenge](https://codecrafters.io/challenges/redis). + +In this challenge, you'll build a toy Redis clone that's capable of handling +basic commands like `PING`, `SET` and `GET`. Along the way we'll learn about +event loops, the Redis protocol and more. + +**Note**: If you're viewing this repo on GitHub, head over to +[codecrafters.io](https://codecrafters.io) to try the challenge. + +# Passing the first stage + +The entry point for your Redis implementation is in `src/main.rs`. Study and +uncomment the relevant code, and push your changes to pass the first stage: + +```sh +git commit -am "pass 1st stage" # any msg +git push origin master +``` + +That's all! + +# Stage 2 & beyond + +Note: This section is for stages 2 and beyond. + +1. Ensure you have `cargo (1.82)` installed locally +1. Run `./your_program.sh` to run your Redis server, which is implemented in + `src/main.rs`. This command compiles your Rust project, so it might be slow + the first time you run it. Subsequent runs will be fast. +1. Commit your changes and run `git push origin master` to submit your solution + to CodeCrafters. Test output will be streamed to your terminal. diff --git a/solutions/rust/02-rg2/code/codecrafters.yml b/solutions/rust/02-rg2/code/codecrafters.yml new file mode 100644 index 00000000..fe3fb234 --- /dev/null +++ b/solutions/rust/02-rg2/code/codecrafters.yml @@ -0,0 +1,11 @@ +# Set this to true if you want debug logs. +# +# These can be VERY verbose, so we suggest turning them off +# unless you really need them. +debug: false + +# Use this to change the Rust version used to run your code +# on Codecrafters. +# +# Available versions: rust-1.82 +language_pack: rust-1.82 diff --git a/solutions/rust/02-rg2/code/src/main.rs b/solutions/rust/02-rg2/code/src/main.rs new file mode 100644 index 00000000..7887b6ce --- /dev/null +++ b/solutions/rust/02-rg2/code/src/main.rs @@ -0,0 +1,18 @@ +#![allow(unused_imports)] +use std::io::Write; +use std::net::TcpListener; + +fn main() { + let listener = TcpListener::bind("127.0.0.1:6379").unwrap(); + + for stream in listener.incoming() { + match stream { + Ok(mut stream) => { + stream.write_all(b"+PONG\r\n").unwrap(); + } + Err(e) => { + println!("error: {}", e); + } + } + } +} diff --git a/solutions/rust/02-rg2/code/your_program.sh b/solutions/rust/02-rg2/code/your_program.sh new file mode 100755 index 00000000..8f4b2dde --- /dev/null +++ b/solutions/rust/02-rg2/code/your_program.sh @@ -0,0 +1,24 @@ +#!/bin/sh +# +# Use this script to run your program LOCALLY. +# +# Note: Changing this script WILL NOT affect how CodeCrafters runs your program. +# +# Learn more: https://codecrafters.io/program-interface + +set -e # Exit early if any commands fail + +# Copied from .codecrafters/compile.sh +# +# - Edit this to change how your program compiles locally +# - Edit .codecrafters/compile.sh to change how your program compiles remotely +( + cd "$(dirname "$0")" # Ensure compile steps are run within the repository directory + cargo build --release --target-dir=/tmp/codecrafters-redis-target --manifest-path Cargo.toml +) + +# Copied from .codecrafters/run.sh +# +# - Edit this to change how your program runs locally +# - Edit .codecrafters/run.sh to change how your program runs remotely +exec /tmp/codecrafters-redis-target/release/redis-starter-rust "$@" diff --git a/solutions/rust/02-rg2/diff/src/main.rs.diff b/solutions/rust/02-rg2/diff/src/main.rs.diff new file mode 100644 index 00000000..4ee01163 --- /dev/null +++ b/solutions/rust/02-rg2/diff/src/main.rs.diff @@ -0,0 +1,21 @@ +@@ -1,17 +1,18 @@ + #![allow(unused_imports)] ++use std::io::Write; + use std::net::TcpListener; + + fn main() { + let listener = TcpListener::bind("127.0.0.1:6379").unwrap(); + + for stream in listener.incoming() { + match stream { +- Ok(_stream) => { +- println!("accepted new connection"); ++ Ok(mut stream) => { ++ stream.write_all(b"+PONG\r\n").unwrap(); + } + Err(e) => { + println!("error: {}", e); + } + } + } + } diff --git a/solutions/rust/02-rg2/explanation.md b/solutions/rust/02-rg2/explanation.md new file mode 100644 index 00000000..a930dcc1 --- /dev/null +++ b/solutions/rust/02-rg2/explanation.md @@ -0,0 +1,28 @@ +The entry point for your Redis implementation is in `src/main.rs`. + +Study and uncomment the relevant code: + +```rust +// Uncomment this block to pass the first stage + +let listener = TcpListener::bind("127.0.0.1:6379").unwrap(); + +for stream in listener.incoming() { + match stream { + Ok(_stream) => { + println!("accepted new connection"); + } + Err(e) => { + println!("error: {}", e); + } + } +} +``` + +Push your changes to pass the first stage: + +``` +git add . +git commit -m "pass 1st stage" # any msg +git push origin master +```