93 lines
2.5 KiB
Rust
93 lines
2.5 KiB
Rust
use serde::{Deserialize, Serialize};
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use garage_util::data::*;
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use garage_table::crdt::*;
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use garage_table::*;
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/// The bucket alias table holds the names given to buckets
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/// in the global namespace.
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#[derive(PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
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pub struct BucketAlias {
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name: String,
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pub state: crdt::Lww<Option<Uuid>>,
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}
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impl BucketAlias {
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pub fn new(name: String, ts: u64, bucket_id: Option<Uuid>) -> Option<Self> {
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if !is_valid_bucket_name(&name) {
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None
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} else {
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Some(BucketAlias {
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name,
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state: crdt::Lww::raw(ts, bucket_id),
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})
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}
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}
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pub fn is_deleted(&self) -> bool {
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self.state.get().is_none()
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}
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pub fn name(&self) -> &str {
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&self.name
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}
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}
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impl Crdt for BucketAlias {
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fn merge(&mut self, o: &Self) {
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self.state.merge(&o.state);
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}
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}
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impl Entry<EmptyKey, String> for BucketAlias {
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fn partition_key(&self) -> &EmptyKey {
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&EmptyKey
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}
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fn sort_key(&self) -> &String {
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&self.name
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}
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}
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pub struct BucketAliasTable;
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impl TableSchema for BucketAliasTable {
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const TABLE_NAME: &'static str = "bucket_alias";
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type P = EmptyKey;
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type S = String;
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type E = BucketAlias;
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type Filter = DeletedFilter;
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fn matches_filter(entry: &Self::E, filter: &Self::Filter) -> bool {
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filter.apply(entry.is_deleted())
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}
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}
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/// Check if a bucket name is valid.
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///
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/// The requirements are listed here:
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///
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/// <https://docs.aws.amazon.com/AmazonS3/latest/userguide/bucketnamingrules.html>
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///
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/// In the case of Garage, bucket names must not be hex-encoded
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/// 32 byte string, which is excluded thanks to the
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/// maximum length of 63 bytes given in the spec.
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pub fn is_valid_bucket_name(n: &str) -> bool {
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// Bucket names must be between 3 and 63 characters
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n.len() >= 3 && n.len() <= 63
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// Bucket names must be composed of lowercase letters, numbers,
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// dashes and dots
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&& n.chars().all(|c| matches!(c, '.' | '-' | 'a'..='z' | '0'..='9'))
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// Bucket names must start and end with a letter or a number
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&& !n.starts_with(&['-', '.'][..])
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&& !n.ends_with(&['-', '.'][..])
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// Bucket names must not be formated as an IP address
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&& n.parse::<std::net::IpAddr>().is_err()
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// Bucket names must not start wih "xn--"
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&& !n.starts_with("xn--")
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// Bucket names must not end with "-s3alias"
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&& !n.ends_with("-s3alias")
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}
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/// Error message to return for invalid bucket names
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pub const INVALID_BUCKET_NAME_MESSAGE: &str = "Invalid bucket name. See AWS documentation for constraints on S3 bucket names:\nhttps://docs.aws.amazon.com/AmazonS3/latest/userguide/bucketnamingrules.html";
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