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authorAlex <alex@adnab.me>2022-05-10 13:16:57 +0200
committerAlex <alex@adnab.me>2022-05-10 13:16:57 +0200
commit5768bf362262f78376af14517c4921941986192e (patch)
treeb4baf3051eade0f63649443278bb3a3f4c38ec25 /src/api/k2v/api_server.rs
parentdef78c5e6f5da37a0d17b5652c525fbeccbc2e86 (diff)
downloadgarage-5768bf362262f78376af14517c4921941986192e.tar.gz
garage-5768bf362262f78376af14517c4921941986192e.zip
First implementation of K2V (#293)
**Specification:** View spec at [this URL](https://git.deuxfleurs.fr/Deuxfleurs/garage/src/branch/k2v/doc/drafts/k2v-spec.md) - [x] Specify the structure of K2V triples - [x] Specify the DVVS format used for causality detection - [x] Specify the K2V index (just a counter of number of values per partition key) - [x] Specify single-item endpoints: ReadItem, InsertItem, DeleteItem - [x] Specify index endpoint: ReadIndex - [x] Specify multi-item endpoints: InsertBatch, ReadBatch, DeleteBatch - [x] Move to JSON objects instead of tuples - [x] Specify endpoints for polling for updates on single values (PollItem) **Implementation:** - [x] Table for K2V items, causal contexts - [x] Indexing mechanism and table for K2V index - [x] Make API handlers a bit more generic - [x] K2V API endpoint - [x] K2V API router - [x] ReadItem - [x] InsertItem - [x] DeleteItem - [x] PollItem - [x] ReadIndex - [x] InsertBatch - [x] ReadBatch - [x] DeleteBatch **Testing:** - [x] Just a simple Python script that does some requests to check visually that things are going right (does not contain parsing of results or assertions on returned values) - [x] Actual tests: - [x] Adapt testing framework - [x] Simple test with InsertItem + ReadItem - [x] Test with several Insert/Read/DeleteItem + ReadIndex - [x] Test all combinations of return formats for ReadItem - [x] Test with ReadBatch, InsertBatch, DeleteBatch - [x] Test with PollItem - [x] Test error codes - [ ] Fix most broken stuff - [x] test PollItem broken randomly - [x] when invalid causality tokens are given, errors should be 4xx not 5xx **Improvements:** - [x] Descending range queries - [x] Specify - [x] Implement - [x] Add test - [x] Batch updates to index counter - [x] Put K2V behind `k2v` feature flag Co-authored-by: Alex Auvolat <alex@adnab.me> Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/293 Co-authored-by: Alex <alex@adnab.me> Co-committed-by: Alex <alex@adnab.me>
Diffstat (limited to 'src/api/k2v/api_server.rs')
-rw-r--r--src/api/k2v/api_server.rs195
1 files changed, 195 insertions, 0 deletions
diff --git a/src/api/k2v/api_server.rs b/src/api/k2v/api_server.rs
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+++ b/src/api/k2v/api_server.rs
@@ -0,0 +1,195 @@
+use std::sync::Arc;
+
+use async_trait::async_trait;
+
+use futures::future::Future;
+use hyper::{Body, Method, Request, Response};
+
+use opentelemetry::{trace::SpanRef, KeyValue};
+
+use garage_table::util::*;
+use garage_util::error::Error as GarageError;
+
+use garage_model::garage::Garage;
+
+use crate::error::*;
+use crate::generic_server::*;
+
+use crate::signature::payload::check_payload_signature;
+use crate::signature::streaming::*;
+
+use crate::helpers::*;
+use crate::k2v::batch::*;
+use crate::k2v::index::*;
+use crate::k2v::item::*;
+use crate::k2v::router::Endpoint;
+use crate::s3::cors::*;
+
+pub struct K2VApiServer {
+ garage: Arc<Garage>,
+}
+
+pub(crate) struct K2VApiEndpoint {
+ bucket_name: String,
+ endpoint: Endpoint,
+}
+
+impl K2VApiServer {
+ pub async fn run(
+ garage: Arc<Garage>,
+ shutdown_signal: impl Future<Output = ()>,
+ ) -> Result<(), GarageError> {
+ if let Some(cfg) = &garage.config.k2v_api {
+ let bind_addr = cfg.api_bind_addr;
+
+ ApiServer::new(
+ garage.config.s3_api.s3_region.clone(),
+ K2VApiServer { garage },
+ )
+ .run_server(bind_addr, shutdown_signal)
+ .await
+ } else {
+ Ok(())
+ }
+ }
+}
+
+#[async_trait]
+impl ApiHandler for K2VApiServer {
+ const API_NAME: &'static str = "k2v";
+ const API_NAME_DISPLAY: &'static str = "K2V";
+
+ type Endpoint = K2VApiEndpoint;
+
+ fn parse_endpoint(&self, req: &Request<Body>) -> Result<K2VApiEndpoint, Error> {
+ let (endpoint, bucket_name) = Endpoint::from_request(req)?;
+
+ Ok(K2VApiEndpoint {
+ bucket_name,
+ endpoint,
+ })
+ }
+
+ async fn handle(
+ &self,
+ req: Request<Body>,
+ endpoint: K2VApiEndpoint,
+ ) -> Result<Response<Body>, Error> {
+ let K2VApiEndpoint {
+ bucket_name,
+ endpoint,
+ } = endpoint;
+ let garage = self.garage.clone();
+
+ // The OPTIONS method is procesed early, before we even check for an API key
+ if let Endpoint::Options = endpoint {
+ return handle_options_s3api(garage, &req, Some(bucket_name)).await;
+ }
+
+ let (api_key, mut content_sha256) = check_payload_signature(&garage, "k2v", &req).await?;
+ let api_key = api_key.ok_or_else(|| {
+ Error::Forbidden("Garage does not support anonymous access yet".to_string())
+ })?;
+
+ let req = parse_streaming_body(
+ &api_key,
+ req,
+ &mut content_sha256,
+ &garage.config.s3_api.s3_region,
+ "k2v",
+ )?;
+
+ let bucket_id = resolve_bucket(&garage, &bucket_name, &api_key).await?;
+ let bucket = garage
+ .bucket_table
+ .get(&EmptyKey, &bucket_id)
+ .await?
+ .filter(|b| !b.state.is_deleted())
+ .ok_or(Error::NoSuchBucket)?;
+
+ let allowed = match endpoint.authorization_type() {
+ Authorization::Read => api_key.allow_read(&bucket_id),
+ Authorization::Write => api_key.allow_write(&bucket_id),
+ Authorization::Owner => api_key.allow_owner(&bucket_id),
+ _ => unreachable!(),
+ };
+
+ if !allowed {
+ return Err(Error::Forbidden(
+ "Operation is not allowed for this key.".to_string(),
+ ));
+ }
+
+ // Look up what CORS rule might apply to response.
+ // Requests for methods different than GET, HEAD or POST
+ // are always preflighted, i.e. the browser should make
+ // an OPTIONS call before to check it is allowed
+ let matching_cors_rule = match *req.method() {
+ Method::GET | Method::HEAD | Method::POST => find_matching_cors_rule(&bucket, &req)?,
+ _ => None,
+ };
+
+ let resp = match endpoint {
+ Endpoint::DeleteItem {
+ partition_key,
+ sort_key,
+ } => handle_delete_item(garage, req, bucket_id, &partition_key, &sort_key).await,
+ Endpoint::InsertItem {
+ partition_key,
+ sort_key,
+ } => handle_insert_item(garage, req, bucket_id, &partition_key, &sort_key).await,
+ Endpoint::ReadItem {
+ partition_key,
+ sort_key,
+ } => handle_read_item(garage, &req, bucket_id, &partition_key, &sort_key).await,
+ Endpoint::PollItem {
+ partition_key,
+ sort_key,
+ causality_token,
+ timeout,
+ } => {
+ handle_poll_item(
+ garage,
+ &req,
+ bucket_id,
+ partition_key,
+ sort_key,
+ causality_token,
+ timeout,
+ )
+ .await
+ }
+ Endpoint::ReadIndex {
+ prefix,
+ start,
+ end,
+ limit,
+ reverse,
+ } => handle_read_index(garage, bucket_id, prefix, start, end, limit, reverse).await,
+ Endpoint::InsertBatch {} => handle_insert_batch(garage, bucket_id, req).await,
+ Endpoint::ReadBatch {} => handle_read_batch(garage, bucket_id, req).await,
+ Endpoint::DeleteBatch {} => handle_delete_batch(garage, bucket_id, req).await,
+ Endpoint::Options => unreachable!(),
+ };
+
+ // If request was a success and we have a CORS rule that applies to it,
+ // add the corresponding CORS headers to the response
+ let mut resp_ok = resp?;
+ if let Some(rule) = matching_cors_rule {
+ add_cors_headers(&mut resp_ok, rule)
+ .ok_or_internal_error("Invalid bucket CORS configuration")?;
+ }
+
+ Ok(resp_ok)
+ }
+}
+
+impl ApiEndpoint for K2VApiEndpoint {
+ fn name(&self) -> &'static str {
+ self.endpoint.name()
+ }
+
+ fn add_span_attributes(&self, span: SpanRef<'_>) {
+ span.set_attribute(KeyValue::new("bucket", self.bucket_name.clone()));
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 09:26:38 +0000