[WIP] Add gcs store

nativelink-config/src/stores.rs

@@ -54,6 +54,9 @@ pub enum StoreSpec {
     ///
     memory(MemorySpec),
 
+    /// TODO(SchahinRohani): Add documentation.
+    experimental_gcs_store(GCSSpec),
+
     /// S3 store will use Amazon's S3 service as a backend to store
     /// the files. This configuration can be used to share files
     /// across multiple instances.
@@ -724,6 +727,22 @@ pub struct EvictionPolicy {
     pub max_count: u64,
 }
 
+#[derive(Serialize, Deserialize, Debug, Default, Clone)]
+#[serde(deny_unknown_fields)]
+pub struct GCSSpec {
+    /// Google Cloud Storage region.
+    #[serde(default, deserialize_with = "convert_string_with_shellexpand")]
+    pub region: String,
+
+    /// If you wish to prefix the location on Google cloud storage. If None, no prefix will be used.
+    #[serde(default)]
+    pub key_prefix: Option<String>,
+
+    /// Bucket name to use as the backend.
+    #[serde(default, deserialize_with = "convert_string_with_shellexpand")]
+    pub bucket: String,
+}
+
 #[derive(Serialize, Deserialize, Debug, Default, Clone)]
 #[serde(deny_unknown_fields)]
 pub struct S3Spec {

nativelink-store/src/default_store_factory.rs

@@ -29,6 +29,7 @@ use crate::dedup_store::DedupStore;
 use crate::existence_cache_store::ExistenceCacheStore;
 use crate::fast_slow_store::FastSlowStore;
 use crate::filesystem_store::FilesystemStore;
+use crate::gcs_store::GCSStore;
 use crate::grpc_store::GrpcStore;
 use crate::memory_store::MemoryStore;
 use crate::noop_store::NoopStore;
@@ -51,6 +52,7 @@ pub fn store_factory<'a>(
         let store: Arc<dyn StoreDriver> = match backend {
             StoreSpec::memory(spec) => MemoryStore::new(spec),
             StoreSpec::experimental_s3_store(spec) => S3Store::new(spec, SystemTime::now).await?,
+            StoreSpec::experimental_gcs_store(spec) => GCSStore::new(spec, SystemTime::now).await?,
             StoreSpec::redis_store(spec) => RedisStore::new(spec.clone())?,
             StoreSpec::verify(spec) => VerifyStore::new(
                 spec,

nativelink-store/src/gcs_store.rs

@@ -0,0 +1,91 @@
+// use std::fmt::Debug;
+use std::pin::Pin;
+use std::sync::Arc;
+use std::time::SystemTime;
+
+use async_trait::async_trait;
+// use googleapis_tonic_google_storage_v2::google::storage::v2::storage_client::StorageClient;
+use nativelink_config::stores::GCSSpec;
+use nativelink_error::{make_err, Code, Error}; //ResultExt
+use nativelink_metric::{
+    MetricFieldData, MetricKind, MetricPublishKnownKindData, MetricsComponent,
+};
+use nativelink_util::buf_channel::{DropCloserReadHalf, DropCloserWriteHalf};
+use nativelink_util::health_utils::{default_health_status_indicator, HealthStatusIndicator};
+use nativelink_util::store_trait::{StoreDriver, StoreKey, UploadSizeInfo};
+// use tonic::transport::Channel;
+
+/// Represents a Google Cloud Platform (GCP) Store.
+#[derive(Default)]
+pub struct GCSStore {
+    // spec: GCPSpec,
+}
+
+impl MetricsComponent for GCSStore {
+    fn publish(
+        &self,
+        _kind: MetricKind,
+        _field_metadata: MetricFieldData,
+    ) -> Result<MetricPublishKnownKindData, nativelink_metric::Error> {
+        Ok(MetricPublishKnownKindData::Component)
+    }
+}
+
+impl GCSStore {
+    pub async fn new(spec: &GCSSpec, current_time: fn() -> SystemTime) -> Result<Arc<Self>, Error> {
+        // Print the spec
+        println!("GCSStore spec: {spec:?}");
+
+        // Get and print the current time
+        let now = current_time();
+        println!("Current time: {now:?}");
+
+        Ok(Arc::new(Self {}))
+    }
+}
+
+#[async_trait]
+impl StoreDriver for GCSStore {
+    async fn has_with_results(
+        self: Pin<&Self>,
+        _keys: &[StoreKey<'_>],
+        _results: &mut [Option<u64>],
+    ) -> Result<(), Error> {
+        // results.iter_mut().for_each(|r| *r = None);
+        Ok(())
+    }
+
+    async fn update(
+        self: Pin<&Self>,
+        _key: StoreKey<'_>,
+        mut _reader: DropCloserReadHalf,
+        _size_info: UploadSizeInfo,
+    ) -> Result<(), Error> {
+        // reader.drain().await.err_tip(|| "In GCPStore::update")?;
+        Ok(())
+    }
+
+    async fn get_part(
+        self: Pin<&Self>,
+        _key: StoreKey<'_>,
+        _writer: &mut DropCloserWriteHalf,
+        _offset: u64,
+        _length: Option<u64>,
+    ) -> Result<(), Error> {
+        Err(make_err!(Code::NotFound, "Not found in GCP store"))
+    }
+
+    fn inner_store(&self, _key: Option<StoreKey>) -> &dyn StoreDriver {
+        self
+    }
+
+    fn as_any<'a>(&'a self) -> &'a (dyn std::any::Any + Sync + Send + 'static) {
+        self
+    }
+
+    fn as_any_arc(self: Arc<Self>) -> Arc<dyn std::any::Any + Sync + Send + 'static> {
+        self
+    }
+}
+
+default_health_status_indicator!(GCSStore);

nativelink-store/src/lib.rs

@@ -21,6 +21,7 @@ pub mod default_store_factory;
 pub mod existence_cache_store;
 pub mod fast_slow_store;
 pub mod filesystem_store;
+pub mod gcs_store;
 pub mod grpc_store;
 pub mod memory_store;
 pub mod noop_store;