Merge pull request #9 from sangshuduo/feat/sangshuduo/random-pairs-with-s3

feat: support except file comand line argument

Author: sangshuduo

random_pairs_of_s3file/README.md

@@ -1,12 +1,12 @@
 ## random_pairs_of_s3file Usage:
 
-```shell
-Usage: random_pairs_of_s3file [OPTIONS] --num-pairs <NUM> --bucket <BUCKET> --directory <DIR> --url-prefix <PREFIX>
+Usage: random_pairs_of_s3file [OPTIONS] --num-pairs <NUM_PAIRS> --bucket <BUCKET> --directory <DIRECTORY> --url-prefix <URL_PREFIX>
 
 Options:
-  --num-pairs <NUM>      Number of pairs to generate
-  --bucket <BUCKET>      Name of the S3 bucket
-  --directory <DIR>      Directory (prefix) in the bucket (e.g. "image/")
-  --url-prefix <PREFIX>  URL prefix for final URLs
-  -h, --help            Print help
-  -V, --version         Print version
+      --num-pairs <NUM_PAIRS>        Number of pairs to generate
+      --bucket <BUCKET>              Name of the S3 bucket
+      --directory <DIRECTORY>        Directory (prefix) in the bucket (e.g. "image/")
+      --url-prefix <URL_PREFIX>      URL prefix to form the final URL (e.g. "https://api.example.com/s3/api/v1/resource?url=s3://")
+      --exclude-file <EXCLUDE_FILE>  File containing keys to exclude
+  -h, --help                         Print help
+  -V, --version                      Print version

random_pairs_of_s3file/src/main.rs

@@ -1,7 +1,10 @@
 use clap::Parser;
 use rand::seq::SliceRandom;
 use serde::Serialize;
+use std::collections::HashSet;
 use std::error::Error;
+use std::fs::File;
+use std::io::{BufRead, BufReader};
 
 // AWS SDK for Rust (1.x)
 use aws_config::{load_defaults, BehaviorVersion};
@@ -28,6 +31,10 @@ struct Args {
     /// URL prefix to form the final URL (e.g. "https://api.example.com/s3/api/v1/resource?url=s3://")
     #[arg(long, required = true)]
     url_prefix: String,
+
+    /// File containing keys to exclude
+    #[arg(long, required = false)]
+    exclude_file: Option<String>,
 }
 
 #[derive(Serialize)]
@@ -50,6 +57,14 @@ async fn main() -> Result<(), Box<dyn Error>> {
     let directory_prefix = &args.directory;
     let url_prefix = &args.url_prefix;
 
+    // Read excluded keys from file if provided
+    let excluded_keys: HashSet<String> = if let Some(exclude_file_path) = args.exclude_file {
+        let file = File::open(&exclude_file_path)?;
+        BufReader::new(file).lines().map_while(Result::ok).collect()
+    } else {
+        HashSet::new()
+    };
+
     let shared_config = load_defaults(BehaviorVersion::latest()).await;
     let s3_client = Client::new(&shared_config);
 
@@ -77,6 +92,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
     let all_keys: Vec<String> = objects
         .iter()
         .filter_map(|obj| obj.key().map(str::to_string))
+        .filter(|key| !excluded_keys.contains(key))
         .collect();
 
     if all_keys.len() < 2 {
@@ -91,12 +107,12 @@ async fn main() -> Result<(), Box<dyn Error>> {
     let mut all_pairs = Vec::new();
     for (i, source) in all_keys.iter().enumerate() {
         // check if source is empty
-        if source.is_empty() {
+        if source.is_empty() || source.ends_with('/') {
             continue;
         }
         for (j, candidate) in all_keys.iter().enumerate() {
             // check if candidate is is_empty
-            if candidate.is_empty() {
+            if candidate.is_empty() || candidate.ends_with('/') {
                 continue;
             }
             if i != j {