Решение на упр.06 задача 1 от Йоан Грозев
Резултати
- 4 точки от тестове
- 0 бонус точки
- 4 точки общо
- 4 успешни тест(а)
- 0 неуспешни тест(а)
Код
use std::collections::HashMap;
use std::error::Error;
use std::fs;
use std::io;
use std::path::Path;
use std::io::{Read, BufRead, BufReader};
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
enum LogLevel
{
Error,
Warn,
Info,
Debug,
}
struct AggregateInfo
{
log_counts: HashMap<LogLevel, usize>,
skipped_files: Vec<String>,
}
fn aggregate_logs(dir: &Path) -> Result<AggregateInfo, Box<dyn Error>>
{
let mut result = AggregateInfo
{
log_counts: HashMap::new(),
skipped_files: Vec::new(),
};
let entries = fs::read_dir(dir)?;
for i in entries
{
let i = match i
{
Ok(e) => e,
Err(e) => return Err(Box::new(e)),
};
let path = i.path();
let name = path.to_string_lossy().to_string();
if path.extension().and_then(|s| s.to_str()) != Some("log")
{
result.skipped_files.push(name);
continue;
}
let metadata = fs::metadata(&path)?;
let file = fs::File::open(&path);
let file = match file
{
Ok(f) => f,
Err(e) => return Err(Box::new(e)),
};
let parse_result = if metadata.len() > 10 * 1024
{
let reader = BufReader::new(file);
parse_log_file(reader, &mut result.log_counts)
}
else
{
parse_log_file(file, &mut result.log_counts)
};
if let Err(_) = parse_result
{
result.skipped_files.push(name);
continue;
}
}
Ok(result)
}
#[derive(Debug)]
enum ParseLogError
{
Read(io::Error),
ParseLine,
}
impl From<io::Error> for ParseLogError
{
fn from(e: io::Error) -> Self
{
ParseLogError::Read(e)
}
}
fn parse_log_file<R>(mut file: R, map: &mut HashMap<LogLevel, usize>) -> Result<(), ParseLogError>
where R: Read
{
let mut buf = String::new();
file.read_to_string(&mut buf)?;
for i in buf.lines()
{
let level = if i.starts_with("ERROR")
{
LogLevel::Error
}
else if i.starts_with("WARN")
{
LogLevel::Warn
}
else if i.starts_with("INFO")
{
LogLevel::Info
}
else if i.starts_with("DEBUG")
{
LogLevel::Debug
}
else
{
return Err(ParseLogError::ParseLine);
};
*map.entry(level).or_insert(0) += 1;
}
Ok(())
}
Лог от изпълнението
Updating crates.io index
Locking 17 packages to latest compatible versions
Compiling proc-macro2 v1.0.103
Compiling unicode-ident v1.0.22
Compiling quote v1.0.42
Compiling futures-sink v0.3.31
Compiling futures-core v0.3.31
Compiling futures-channel v0.3.31
Compiling memchr v2.7.6
Compiling syn v2.0.110
Compiling pin-project-lite v0.2.16
Compiling futures-io v0.3.31
Compiling slab v0.4.11
Compiling futures-task v0.3.31
Compiling pin-utils v0.1.0
Compiling solution v0.1.0 (/tmp/d20251120-1757769-f54v30/solution)
warning: unused import: `BufRead`
--> src/lib.rs:6:21
|
6 | use std::io::{Read, BufRead, BufReader};
| ^^^^^^^
|
= note: `#[warn(unused_imports)]` on by default
warning: enum `LogLevel` is never used
--> src/lib.rs:9:6
|
9 | enum LogLevel
| ^^^^^^^^
|
= note: `#[warn(dead_code)]` on by default
warning: struct `AggregateInfo` is never constructed
--> src/lib.rs:17:8
|
17 | struct AggregateInfo
| ^^^^^^^^^^^^^
warning: function `aggregate_logs` is never used
--> src/lib.rs:23:4
|
23 | fn aggregate_logs(dir: &Path) -> Result<AggregateInfo, Box<dyn Error>>
| ^^^^^^^^^^^^^^
warning: field `0` is never read
--> src/lib.rs:82:10
|
82 | Read(io::Error),
| ---- ^^^^^^^^^
| |
| field in this variant
|
= note: `ParseLogError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
|
82 | Read(()),
| ~~
warning: variant `ParseLine` is never constructed
--> src/lib.rs:83:5
|
80 | enum ParseLogError
| ------------- variant in this enum
...
83 | ParseLine,
| ^^^^^^^^^
|
= note: `ParseLogError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
warning: function `parse_log_file` is never used
--> src/lib.rs:94:4
|
94 | fn parse_log_file<R>(mut file: R, map: &mut HashMap<LogLevel, usize>) -> Result<(), ParseLogError>
| ^^^^^^^^^^^^^^
warning: `solution` (lib) generated 7 warnings
Compiling futures-macro v0.3.31
Compiling futures-util v0.3.31
Compiling futures-executor v0.3.31
Compiling futures v0.3.31
warning: unused import: `BufRead`
--> tests/../src/lib.rs:6:21
|
6 | use std::io::{Read, BufRead, BufReader};
| ^^^^^^^
|
= note: `#[warn(unused_imports)]` on by default
warning: field `0` is never read
--> tests/../src/lib.rs:82:10
|
82 | Read(io::Error),
| ---- ^^^^^^^^^
| |
| field in this variant
|
= note: `ParseLogError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
= note: `#[warn(dead_code)]` on by default
help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
|
82 | Read(()),
| ~~
warning: `solution` (test "solution_test") generated 2 warnings
Finished `test` profile [unoptimized + debuginfo] target(s) in 8.87s
Running tests/solution_test.rs (target/debug/deps/solution_test-f75e629a1d90e17c)
running 4 tests
test solution_test::test_parse_log_basic ... ok
test solution_test::test_aggregate ... ok
test solution_test::test_parse_log_big_data ... ok
test solution_test::test_parse_log_invalid ... ok
test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s