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influxdb
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feat: remove path parsing functionality 

Paths to parquet files are an implementation detail and should not be
parsed.

Closes #1506.
pull/24376/head
Marco Neumann 2021-06-14 16:24:06 +02:00
parent 250ccdcdcd
commit 776b6c011c
1 changed files with 2 additions and 92 deletions
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94
parquet_file/src/storage.rs
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@ -180,7 +180,8 @@ impl Storage {
/// Return full path including filename in the object store to save a chunk
/// table file.
///
/// See [`parse_location`](Self::parse_location) for parsing.
/// **Important: The resulting path should be treated as a black box. It might vary over time and is an
/// implementation detail. Do NOT attempt to parse it.**
pub fn location(
&self,
partition_key: String,
@ -200,37 +201,6 @@ impl Storage {
path
}
/// Parse locations and return partition key, chunk ID and table name.
///
/// See [`location`](Self::location) for path generation.
pub fn parse_location(
&self,
path: impl Into<DirsAndFileName>,
) -> Result<(String, u32, String)> {
let path: DirsAndFileName = path.into();
let dirs: Vec<_> = path.directories.iter().map(|part| part.encoded()).collect();
match (dirs.as_slice(), &path.file_name) {
([server_id, db_name, "data", partition_key, chunk_id], Some(filename))
if (server_id == &self.server_id.to_string()) && (db_name == &self.db_name) =>
{
let chunk_id: u32 = match chunk_id.parse() {
Ok(x) => x,
Err(_) => return Err(Error::LocationParsingFailure { path }),
};
let parts: Vec<_> = filename.encoded().split('.').collect();
let table_name = match parts[..] {
[name, "parquet"] => name,
_ => return Err(Error::LocationParsingFailure { path }),
};
Ok((partition_key.to_string(), chunk_id, table_name.to_string()))
}
_ => Err(Error::LocationParsingFailure { path }),
}
}
/// Write the given stream of data of a specified table of
/// a specified partitioned chunk to a parquet file of this storage
pub async fn write_to_object_store(
@ -517,7 +487,6 @@ mod tests {
use arrow_util::assert_batches_eq;
use datafusion::physical_plan::common::SizedRecordBatchStream;
use datafusion_util::MemoryStream;
use object_store::parsed_path;
use uuid::Uuid;
#[tokio::test]
@ -549,65 +518,6 @@ mod tests {
assert_eq!(metadata_roundtrip, metadata);
}
#[test]
fn test_location_to_from_path() {
let server_id = ServerId::new(NonZeroU32::new(1).unwrap());
let store = Storage::new(make_object_store(), server_id, "my_db");
// happy roundtrip
let path = store.location("p1".to_string(), 42, "my_table".to_string());
assert_eq!(path.display(), "1/my_db/data/p1/42/my_table.parquet");
assert_eq!(
store.parse_location(path).unwrap(),
("p1".to_string(), 42, "my_table".to_string())
);
// error cases
assert!(store.parse_location(parsed_path!()).is_err());
assert!(store
.parse_location(parsed_path!(["too", "short"], "my_table.parquet"))
.is_err());
assert!(store
.parse_location(parsed_path!(
["this", "is", "way", "way", "too", "long"],
"my_table.parquet"
))
.is_err());
assert!(store
.parse_location(parsed_path!(
["1", "my_db", "data", "p1", "not_a_number"],
"my_table.parquet"
))
.is_err());
assert!(store
.parse_location(parsed_path!(
["1", "my_db", "not_data", "p1", "42"],
"my_table.parquet"
))
.is_err());
assert!(store
.parse_location(parsed_path!(
["1", "other_db", "data", "p1", "42"],
"my_table.parquet"
))
.is_err());
assert!(store
.parse_location(parsed_path!(
["2", "my_db", "data", "p1", "42"],
"my_table.parquet"
))
.is_err());
assert!(store
.parse_location(parsed_path!(["1", "my_db", "data", "p1", "42"], "my_table"))
.is_err());
assert!(store
.parse_location(parsed_path!(
["1", "my_db", "data", "p1", "42"],
"my_table.parquet.tmp"
))
.is_err());
}
#[tokio::test]
async fn test_roundtrip() {
test_helpers::maybe_start_logging();