initial implementation of a k2v client
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trinity-1686a 2022-05-14 13:11:34 +02:00
parent 5768bf3622
commit dd55af7efc
7 changed files with 1145 additions and 235 deletions

144
Cargo.lock generated
View file

@ -504,6 +504,16 @@ dependencies = [
"subtle", "subtle",
] ]
[[package]]
name = "crypto-mac"
version = "0.11.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b1d1a86f49236c215f271d40892d5fc950490551400b02ef360692c29815c714"
dependencies = [
"generic-array",
"subtle",
]
[[package]] [[package]]
name = "ct-logs" name = "ct-logs"
version = "0.8.0" version = "0.8.0"
@ -848,7 +858,7 @@ dependencies = [
"garage_web", "garage_web",
"git-version", "git-version",
"hex", "hex",
"hmac", "hmac 0.10.1",
"http", "http",
"hyper", "hyper",
"kuska-sodiumoxide", "kuska-sodiumoxide",
@ -904,7 +914,7 @@ dependencies = [
"garage_table 0.7.0", "garage_table 0.7.0",
"garage_util 0.7.0", "garage_util 0.7.0",
"hex", "hex",
"hmac", "hmac 0.10.1",
"http", "http",
"http-range", "http-range",
"httpdate 0.3.2", "httpdate 0.3.2",
@ -1296,6 +1306,16 @@ dependencies = [
"digest", "digest",
] ]
[[package]]
name = "hmac"
version = "0.11.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2a2a2320eb7ec0ebe8da8f744d7812d9fc4cb4d09344ac01898dbcb6a20ae69b"
dependencies = [
"crypto-mac 0.11.1",
"digest",
]
[[package]] [[package]]
name = "http" name = "http"
version = "0.2.6" version = "0.2.6"
@ -1523,6 +1543,21 @@ dependencies = [
"serde_json", "serde_json",
] ]
[[package]]
name = "k2v-client"
version = "0.1.0"
dependencies = [
"base64",
"http",
"rusoto_core",
"rusoto_credential",
"rusoto_signature",
"serde",
"serde_json",
"thiserror",
"tokio",
]
[[package]] [[package]]
name = "k8s-openapi" name = "k8s-openapi"
version = "0.13.1" version = "0.13.1"
@ -2533,6 +2568,75 @@ dependencies = [
"xmlparser", "xmlparser",
] ]
[[package]]
name = "rusoto_core"
version = "0.48.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1db30db44ea73551326269adcf7a2169428a054f14faf9e1768f2163494f2fa2"
dependencies = [
"async-trait",
"base64",
"bytes 1.1.0",
"crc32fast",
"futures",
"http",
"hyper",
"hyper-tls",
"lazy_static",
"log",
"rusoto_credential",
"rusoto_signature",
"rustc_version",
"serde",
"serde_json",
"tokio",
"xml-rs",
]
[[package]]
name = "rusoto_credential"
version = "0.48.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ee0a6c13db5aad6047b6a44ef023dbbc21a056b6dab5be3b79ce4283d5c02d05"
dependencies = [
"async-trait",
"chrono",
"dirs-next",
"futures",
"hyper",
"serde",
"serde_json",
"shlex",
"tokio",
"zeroize",
]
[[package]]
name = "rusoto_signature"
version = "0.48.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a5ae95491c8b4847931e291b151127eccd6ff8ca13f33603eb3d0035ecb05272"
dependencies = [
"base64",
"bytes 1.1.0",
"chrono",
"digest",
"futures",
"hex",
"hmac 0.11.0",
"http",
"hyper",
"log",
"md-5",
"percent-encoding",
"pin-project-lite",
"rusoto_credential",
"rustc_version",
"serde",
"sha2",
"tokio",
]
[[package]] [[package]]
name = "rustc_version" name = "rustc_version"
version = "0.4.0" version = "0.4.0"
@ -2669,9 +2773,9 @@ checksum = "a4a3381e03edd24287172047536f20cabde766e2cd3e65e6b00fb3af51c4f38d"
[[package]] [[package]]
name = "serde" name = "serde"
version = "1.0.136" version = "1.0.137"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ce31e24b01e1e524df96f1c2fdd054405f8d7376249a5110886fb4b658484789" checksum = "61ea8d54c77f8315140a05f4c7237403bf38b72704d031543aa1d16abbf517d1"
dependencies = [ dependencies = [
"serde_derive", "serde_derive",
] ]
@ -2697,9 +2801,9 @@ dependencies = [
[[package]] [[package]]
name = "serde_derive" name = "serde_derive"
version = "1.0.136" version = "1.0.137"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "08597e7152fcd306f41838ed3e37be9eaeed2b61c42e2117266a554fab4662f9" checksum = "1f26faba0c3959972377d3b2d306ee9f71faee9714294e41bb777f83f88578be"
dependencies = [ dependencies = [
"proc-macro2", "proc-macro2",
"quote", "quote",
@ -2719,9 +2823,9 @@ dependencies = [
[[package]] [[package]]
name = "serde_json" name = "serde_json"
version = "1.0.79" version = "1.0.81"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8e8d9fa5c3b304765ce1fd9c4c8a3de2c8db365a5b91be52f186efc675681d95" checksum = "9b7ce2b32a1aed03c558dc61a5cd328f15aff2dbc17daad8fb8af04d2100e15c"
dependencies = [ dependencies = [
"indexmap", "indexmap",
"itoa", "itoa",
@ -2754,6 +2858,12 @@ dependencies = [
"opaque-debug", "opaque-debug",
] ]
[[package]]
name = "shlex"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "43b2853a4d09f215c24cc5489c992ce46052d359b5109343cbafbf26bc62f8a3"
[[package]] [[package]]
name = "signal-hook-registry" name = "signal-hook-registry"
version = "1.4.0" version = "1.4.0"
@ -2902,9 +3012,9 @@ checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
[[package]] [[package]]
name = "syn" name = "syn"
version = "1.0.89" version = "1.0.94"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ea297be220d52398dcc07ce15a209fce436d361735ac1db700cab3b6cdfb9f54" checksum = "a07e33e919ebcd69113d5be0e4d70c5707004ff45188910106854f38b960df4a"
dependencies = [ dependencies = [
"proc-macro2", "proc-macro2",
"quote", "quote",
@ -2957,18 +3067,18 @@ dependencies = [
[[package]] [[package]]
name = "thiserror" name = "thiserror"
version = "1.0.30" version = "1.0.31"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "854babe52e4df1653706b98fcfc05843010039b406875930a70e4d9644e5c417" checksum = "bd829fe32373d27f76265620b5309d0340cb8550f523c1dda251d6298069069a"
dependencies = [ dependencies = [
"thiserror-impl", "thiserror-impl",
] ]
[[package]] [[package]]
name = "thiserror-impl" name = "thiserror-impl"
version = "1.0.30" version = "1.0.31"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "aa32fd3f627f367fe16f893e2597ae3c05020f8bba2666a4e6ea73d377e5714b" checksum = "0396bc89e626244658bef819e22d0cc459e795a5ebe878e6ec336d1674a8d79a"
dependencies = [ dependencies = [
"proc-macro2", "proc-macro2",
"quote", "quote",
@ -3535,6 +3645,12 @@ version = "0.32.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "504a2476202769977a040c6364301a3f65d0cc9e3fb08600b2bda150a0488316" checksum = "504a2476202769977a040c6364301a3f65d0cc9e3fb08600b2bda150a0488316"
[[package]]
name = "xml-rs"
version = "0.8.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d2d7d3948613f75c98fd9328cfdcc45acc4d360655289d0a7d4ec931392200a3"
[[package]] [[package]]
name = "xmlparser" name = "xmlparser"
version = "0.13.3" version = "0.13.3"

581
Cargo.nix

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@ -8,7 +8,8 @@ members = [
"src/admin", "src/admin",
"src/api", "src/api",
"src/web", "src/web",
"src/garage" "src/garage",
"src/k2v-client",
] ]
[profile.dev] [profile.dev]

15
src/k2v-client/Cargo.toml Normal file
View file

@ -0,0 +1,15 @@
[package]
name = "k2v-client"
version = "0.1.0"
edition = "2021"
[dependencies]
base64 = "0.13.0"
http = "0.2.6"
rusoto_core = "0.48.0"
rusoto_credential = "0.48.0"
rusoto_signature = "0.48.0"
serde = "1.0.137"
serde_json = "1.0.81"
thiserror = "1.0.31"
tokio = "1.17.0"

View file

@ -0,0 +1,20 @@
use std::borrow::Cow;
use thiserror::Error;
/// Errors returned by this crate
#[derive(Error, Debug)]
pub enum Error {
#[error("received invalid response: {0}")]
InvalidResponse(Cow<'static, str>),
#[error("not found")]
NotFound,
#[error("io error: {0}")]
IoError(#[from] std::io::Error),
#[error("rusoto tls error: {0}")]
RusotoTls(#[from] rusoto_core::request::TlsError),
#[error("rusoto http error: {0}")]
RusotoHttp(#[from] rusoto_core::HttpDispatchError),
#[error("deserialization error: {0}")]
Deserialization(#[from] serde_json::Error),
}

570
src/k2v-client/src/lib.rs Normal file
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@ -0,0 +1,570 @@
use std::collections::BTreeMap;
use std::time::Duration;
use http::header::{ACCEPT, CONTENT_LENGTH, CONTENT_TYPE};
use http::status::StatusCode;
use http::HeaderMap;
use rusoto_core::{ByteStream, DispatchSignedRequest, HttpClient};
use rusoto_credential::AwsCredentials;
use rusoto_signature::region::Region;
use rusoto_signature::signature::SignedRequest;
use serde::de::Error as DeError;
use serde::{Deserialize, Deserializer, Serialize, Serializer};
use tokio::io::AsyncReadExt;
mod error;
pub use error::Error;
const DEFAULT_TIMEOUT: Duration = Duration::from_secs(5);
const DEFAULT_POLL_TIMEOUT: Duration = Duration::from_secs(300);
const SERVICE: &str = "k2v";
const GARAGE_CAUSALITY_TOKEN: &str = "X-Garage-Causality-Token";
/// Client used to query a K2V server.
pub struct K2vClient {
region: Region,
bucket: String,
creds: AwsCredentials,
client: HttpClient,
}
impl K2vClient {
/// Create a new K2V client.
pub fn new(
region: Region,
bucket: String,
creds: AwsCredentials,
user_agent: Option<String>,
) -> Result<Self, Error> {
let mut client = HttpClient::new()?;
if let Some(ua) = user_agent {
client.local_agent_prepend(ua);
} else {
client.local_agent_prepend(format!("k2v/{}", env!("CARGO_PKG_VERSION")));
}
Ok(K2vClient {
region,
bucket,
creds,
client,
})
}
/// Perform a ReadItem request, reading the value(s) stored for a single pk+sk.
pub async fn read_item(
&self,
partition_key: &str,
sort_key: &str,
) -> Result<CausalValue, Error> {
let mut req = SignedRequest::new(
"GET",
SERVICE,
&self.region,
&format!("/{}/{}", self.bucket, partition_key),
);
req.add_param("sort_key", sort_key);
req.add_header(ACCEPT, "application/octet-stream, application/json");
let res = self.dispatch(req, None).await?;
let causality = res
.causality_token
.ok_or_else(|| Error::InvalidResponse("missing causality token".into()))?;
if res.status == StatusCode::NO_CONTENT {
return Ok(CausalValue {
causality,
value: vec![K2vValue::Tombstone],
});
}
match res.content_type.as_deref() {
Some("application/octet-stream") => Ok(CausalValue {
causality,
value: vec![K2vValue::Value(res.body)],
}),
Some("application/json") => {
let value = serde_json::from_slice(&res.body)?;
Ok(CausalValue { causality, value })
}
Some(ct) => Err(Error::InvalidResponse(
format!("invalid content type: {}", ct).into(),
)),
None => Err(Error::InvalidResponse("missing content type".into())),
}
}
/// Perform a PollItem request, waiting for the value(s) stored for a single pk+sk to be
/// updated.
pub async fn poll_item(
&self,
partition_key: &str,
sort_key: &str,
causality: CausalityToken,
timeout: Option<Duration>,
) -> Result<Option<CausalValue>, Error> {
let timeout = timeout.unwrap_or(DEFAULT_POLL_TIMEOUT);
let mut req = SignedRequest::new(
"GET",
SERVICE,
&self.region,
&format!("/{}/{}", self.bucket, partition_key),
);
req.add_param("sort_key", sort_key);
req.add_param("causality_token", &causality.0);
req.add_param("timeout", &timeout.as_secs().to_string());
req.add_header(ACCEPT, "application/octet-stream, application/json;q=0.9");
let res = self.dispatch(req, Some(timeout + DEFAULT_TIMEOUT)).await?;
let causality = res
.causality_token
.ok_or_else(|| Error::InvalidResponse("missing causality token".into()))?;
if res.status == StatusCode::NOT_MODIFIED {
return Ok(None);
}
if res.status == StatusCode::NO_CONTENT {
return Ok(Some(CausalValue {
causality,
value: vec![K2vValue::Tombstone],
}));
}
match res.content_type.as_deref() {
Some("application/octet-stream") => Ok(Some(CausalValue {
causality,
value: vec![K2vValue::Value(res.body)],
})),
Some("application/json") => {
let value = serde_json::from_slice(&res.body)?;
Ok(Some(CausalValue { causality, value }))
}
Some(ct) => Err(Error::InvalidResponse(
format!("invalid content type: {}", ct).into(),
)),
None => Err(Error::InvalidResponse("missing content type".into())),
}
}
/// Perform an InsertItem request, inserting a value for a single pk+sk.
pub async fn insert_item(
&self,
partition_key: &str,
sort_key: &str,
value: Vec<u8>,
causality: Option<CausalityToken>,
) -> Result<(), Error> {
let mut req = SignedRequest::new(
"PUT",
SERVICE,
&self.region,
&format!("/{}/{}", self.bucket, partition_key),
);
req.add_param("sort_key", sort_key);
req.set_payload(Some(value));
if let Some(causality) = causality {
req.add_header(GARAGE_CAUSALITY_TOKEN, &causality.0);
}
self.dispatch(req, None).await?;
Ok(())
}
/// Perform a DeleteItem request, deleting the value(s) stored for a single pk+sk.
pub async fn delete_item(
&self,
partition_key: &str,
sort_key: &str,
causality: CausalityToken,
) -> Result<(), Error> {
let mut req = SignedRequest::new(
"DELETE",
SERVICE,
&self.region,
&format!("/{}/{}", self.bucket, partition_key),
);
req.add_param("sort_key", sort_key);
req.add_header(GARAGE_CAUSALITY_TOKEN, &causality.0);
self.dispatch(req, None).await?;
Ok(())
}
// TODO poke team, draft doc outdated fot the return type of this endpoint
/// Perform a ReadIndex request, listing partition key which have at least one associated
/// sort key, and which matches the filter.
pub async fn read_index<'a>(
&self,
filter: Filter<'a>,
) -> Result<PaginatedRange<PartitionInfo>, Error> {
let mut req =
SignedRequest::new("GET", SERVICE, &self.region, &format!("/{}", self.bucket));
filter.insert_params(&mut req);
let res = self.dispatch(req, None).await?;
let resp: ReadIndexResponse = serde_json::from_slice(&res.body)?;
let items = resp
.partition_keys
.into_iter()
.map(|ReadIndexItem { pk, info }| (pk, info))
.collect();
Ok(PaginatedRange {
items,
next_start: resp.next_start,
})
}
/// Perform an InsertBatch request, inserting multiple values at once. Note: this operation is
/// *not* atomic: it is possible for some sub-operations to fails and others to success. In
/// that case, failure is reported.
pub async fn insert_batch<'a>(&self, operations: &[BatchInsertOp<'a>]) -> Result<(), Error> {
let mut req =
SignedRequest::new("POST", SERVICE, &self.region, &format!("/{}", self.bucket));
let payload = serde_json::to_vec(operations)?;
req.set_payload(Some(payload));
self.dispatch(req, None).await?;
Ok(())
}
/// Perform a ReadBatch request, reading multiple values or range of values at once.
pub async fn read_batch<'a>(
&self,
operations: &[BatchReadOp<'a>],
) -> Result<Vec<PaginatedRange<CausalValue>>, Error> {
let mut req =
SignedRequest::new("POST", SERVICE, &self.region, &format!("/{}", self.bucket));
req.add_param("search", "");
let payload = serde_json::to_vec(operations)?;
req.set_payload(Some(payload));
let res = self.dispatch(req, None).await?;
let resp: Vec<BatchReadResponse> = serde_json::from_slice(&res.body)?;
Ok(resp
.into_iter()
.map(|e| PaginatedRange {
items: e
.items
.into_iter()
.map(|BatchReadItem { sk, ct, v }| {
(
sk,
CausalValue {
causality: ct,
value: v,
},
)
})
.collect(),
next_start: e.next_start,
})
.collect())
}
/// Perform a DeleteBatch request, deleting mutiple values or range of values at once, without
/// providing causality information.
pub async fn delete_batch<'a>(
&self,
operations: &[BatchDeleteOp<'a>],
) -> Result<Vec<u64>, Error> {
let mut req =
SignedRequest::new("POST", SERVICE, &self.region, &format!("/{}", self.bucket));
req.add_param("delete", "");
let payload = serde_json::to_vec(operations)?;
req.set_payload(Some(payload));
let res = self.dispatch(req, None).await?;
let resp: Vec<BatchDeleteResponse> = serde_json::from_slice(&res.body)?;
Ok(resp.into_iter().map(|r| r.deleted_items).collect())
}
async fn dispatch(
&self,
mut req: SignedRequest,
timeout: Option<Duration>,
) -> Result<Response, Error> {
req.sign(&self.creds);
let mut res = self
.client
.dispatch(req, Some(timeout.unwrap_or(DEFAULT_TIMEOUT)))
.await?;
let causality_token = res
.headers
.remove(GARAGE_CAUSALITY_TOKEN)
.map(CausalityToken);
let content_type = res.headers.remove(CONTENT_TYPE);
let body = match res.status {
StatusCode::OK => read_body(&mut res.headers, res.body).await?,
StatusCode::NO_CONTENT => Vec::new(),
StatusCode::NOT_FOUND => return Err(Error::NotFound),
StatusCode::NOT_MODIFIED => Vec::new(),
_ => {
return Err(Error::InvalidResponse(
format!("invalid error code: {}", res.status).into(),
))
}
};
Ok(Response {
body,
status: res.status,
causality_token,
content_type,
})
}
}
async fn read_body(headers: &mut HeaderMap<String>, body: ByteStream) -> Result<Vec<u8>, Error> {
let body_len = headers
.get(CONTENT_LENGTH)
.and_then(|h| h.parse().ok())
.unwrap_or(0);
let mut res = Vec::with_capacity(body_len);
body.into_async_read().read_to_end(&mut res).await?;
Ok(res)
}
/// An opaque token used to convey causality between operations.
#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
#[serde(transparent)]
pub struct CausalityToken(String);
impl From<String> for CausalityToken {
fn from(v: String) -> Self {
CausalityToken(v)
}
}
impl From<CausalityToken> for String {
fn from(v: CausalityToken) -> Self {
v.0
}
}
/// A value in K2V. can be either a binary value, or a tombstone.
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum K2vValue {
Tombstone,
Value(Vec<u8>),
}
impl From<Vec<u8>> for K2vValue {
fn from(v: Vec<u8>) -> Self {
K2vValue::Value(v)
}
}
impl From<Option<Vec<u8>>> for K2vValue {
fn from(v: Option<Vec<u8>>) -> Self {
match v {
Some(v) => K2vValue::Value(v),
None => K2vValue::Tombstone,
}
}
}
impl<'de> Deserialize<'de> for K2vValue {
fn deserialize<D>(d: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
let val: Option<&str> = Option::deserialize(d)?;
Ok(match val {
Some(s) => {
K2vValue::Value(base64::decode(s).map_err(|_| DeError::custom("invalid base64"))?)
}
None => K2vValue::Tombstone,
})
}
}
impl Serialize for K2vValue {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
match self {
K2vValue::Tombstone => serializer.serialize_none(),
K2vValue::Value(v) => {
let b64 = base64::encode(v);
serializer.serialize_str(&b64)
}
}
}
}
/// A set of K2vValue and associated causality information.
#[derive(Debug, Clone)]
pub struct CausalValue {
pub causality: CausalityToken,
pub value: Vec<K2vValue>,
}
/// Result of paginated requests.
#[derive(Debug, Clone)]
pub struct PaginatedRange<V> {
pub items: BTreeMap<String, V>,
pub next_start: Option<String>,
}
/// Filter for batch operations.
#[derive(Debug, Default, Clone, Deserialize, Serialize)]
pub struct Filter<'a> {
pub start: Option<&'a str>,
pub end: Option<&'a str>,
pub prefix: Option<&'a str>,
pub limit: Option<u64>,
#[serde(default)]
pub reverse: bool,
}
impl<'a> Filter<'a> {
fn insert_params(&self, req: &mut SignedRequest) {
if let Some(start) = &self.start {
req.add_param("start", start);
}
if let Some(end) = &self.end {
req.add_param("end", end);
}
if let Some(prefix) = &self.prefix {
req.add_param("prefix", prefix);
}
if let Some(limit) = &self.limit {
req.add_param("limit", &limit.to_string());
}
if self.reverse {
req.add_param("reverse", "true");
}
}
}
#[derive(Debug, Clone, Deserialize)]
#[serde(rename_all = "camelCase")]
struct ReadIndexResponse<'a> {
#[serde(flatten, borrow)]
#[allow(dead_code)]
filter: Filter<'a>,
partition_keys: Vec<ReadIndexItem>,
#[allow(dead_code)]
more: bool,
next_start: Option<String>,
}
#[derive(Debug, Clone, Deserialize)]
struct ReadIndexItem {
pk: String,
#[serde(flatten)]
info: PartitionInfo,
}
/// Information about data stored with a given partition key.
#[derive(Debug, Clone, Deserialize)]
pub struct PartitionInfo {
pub entries: u64,
pub conflicts: u64,
pub values: u64,
pub bytes: u64,
}
/// Single sub-operation of an InsertBatch.
#[derive(Debug, Clone, Serialize)]
pub struct BatchInsertOp<'a> {
#[serde(rename = "pk")]
pub partition_key: &'a str,
#[serde(rename = "sk")]
pub sort_key: &'a str,
#[serde(rename = "ct")]
pub causality: Option<CausalityToken>,
#[serde(rename = "v")]
pub value: K2vValue,
}
/// Single sub-operation of a ReadBatch.
#[derive(Debug, Default, Clone, Deserialize, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct BatchReadOp<'a> {
pub partition_key: &'a str,
#[serde(flatten, borrow)]
pub filter: Filter<'a>,
#[serde(default)]
pub single_item: bool,
#[serde(default)]
pub concflicts_only: bool,
#[serde(default)]
pub include_tombstones: bool,
}
#[derive(Debug, Clone, Deserialize)]
#[serde(rename_all = "camelCase")]
struct BatchReadResponse<'a> {
#[serde(flatten, borrow)]
#[allow(dead_code)]
op: BatchReadOp<'a>,
items: Vec<BatchReadItem>,
#[allow(dead_code)]
more: bool,
next_start: Option<String>,
}
#[derive(Debug, Clone, Deserialize)]
struct BatchReadItem {
sk: String,
ct: CausalityToken,
v: Vec<K2vValue>,
}
/// Single sub-operation of a DeleteBatch
#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct BatchDeleteOp<'a> {
pub partition_key: &'a str,
pub prefix: Option<&'a str>,
pub start: Option<&'a str>,
pub end: Option<&'a str>,
#[serde(default)]
pub single_item: bool,
}
impl<'a> BatchDeleteOp<'a> {
pub fn new(partition_key: &'a str) -> Self {
BatchDeleteOp {
partition_key,
prefix: None,
start: None,
end: None,
single_item: false,
}
}
}
#[derive(Debug, Clone, Deserialize)]
#[serde(rename_all = "camelCase")]
struct BatchDeleteResponse<'a> {
#[serde(flatten, borrow)]
#[allow(dead_code)]
filter: BatchDeleteOp<'a>,
deleted_items: u64,
}
struct Response {
body: Vec<u8>,
status: StatusCode,
causality_token: Option<CausalityToken>,
content_type: Option<String>,
}

View file

@ -0,0 +1,47 @@
use k2v_client::*;
use rusoto_core::credential::{EnvironmentProvider, ProvideAwsCredentials};
use rusoto_core::Region;
#[tokio::main]
async fn main() -> Result<(), Error> {
// TODO provide a CLI to perform queries
let region = Region::Custom {
name: "us-east-1".to_owned(),
endpoint: "http://172.30.2.1:3903".to_owned(),
};
let creds = EnvironmentProvider::default().credentials().await.unwrap();
let client = K2vClient::new(region, "my-bucket".to_owned(), creds, None)?;
client.insert_item("pk", "sk", vec![0x12], None).await?;
/*
dbg!(client.read_item("pk", "sk").await?);
client.delete_item("patate", "patate", "eFmifSwRtcl4WaJ9LBG1ywAAAAAAAAAC".to_owned().into()).await?;
dbg!(client.read_index(Filter::default()).await?);
client.insert_batch(&[
BatchInsertOp {
partition_key: "pk",
sort_key: "sk1",
causality: None,
value: vec![1,2,3].into(),
},
BatchInsertOp {
partition_key: "pk",
sort_key: "sk2",
causality: None,
value: vec![1,2,4].into(),
},
]).await?;
dbg!(client.read_batch(&[BatchReadOp { partition_key: "pk", ..BatchReadOp::default()}]).await?);
dbg!(client.delete_batch(&[BatchDeleteOp::new("pk")]).await?);
*/
Ok(())
}