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Work on API

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This commit is contained in:
Alex 2020-04-28 10:18:14 +00:00
parent be35cbdce2
commit 0957d0fdfa
11 changed files with 364 additions and 120 deletions
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1
.gitignore vendored
View file

@ -2,3 +2,4 @@
/tmp
/pki
**/*.rs.bk
*.swp

75
src/api/api_server.rs
View file

@ -14,6 +14,8 @@ use garage_core::garage::Garage;
use crate::http_util::*;
use crate::signature::check_signature;
use crate::s3_copy::*;
use crate::s3_delete::*;
use crate::s3_get::*;
use crate::s3_list::*;
use crate::s3_put::*;
@ -71,15 +73,7 @@ async fn handler_inner(
req: Request<Body>,
) -> Result<Response<BodyType>, Error> {
let path = req.uri().path().to_string();
let path = path.trim_start_matches('/');
let (bucket, key) = match path.find('/') {
Some(i) => {
let (bucket, key) = path.split_at(i);
let key = key.trim_start_matches('/');
(bucket, Some(key))
}
None => (path, None),
};
let (bucket, key) = parse_bucket_key(path.as_str())?;
if bucket.len() == 0 {
return Err(Error::Forbidden(format!(
"Operations on buckets not allowed"
@ -116,14 +110,28 @@ async fn handler_inner(
Ok(handle_get(garage, &bucket, &key).await?)
}
&Method::PUT => {
if ["partnumber", "uploadid"]
.iter()
.all(|x| params.contains_key(&x.to_string()))
if params.contains_key(&"partnumber".to_string())
&& params.contains_key(&"uploadid".to_string())
{
// UploadPart query
let part_number = params.get("partnumber").unwrap();
let upload_id = params.get("uploadid").unwrap();
Ok(handle_put_part(garage, req, &bucket, &key, part_number, upload_id).await?)
} else if req.headers().contains_key("x-amz-copy-source") {
// CopyObject query
let copy_source = req.headers().get("x-amz-copy-source").unwrap().to_str()?;
let (source_bucket, source_key) = parse_bucket_key(copy_source)?;
if !api_key.allow_read(&source_bucket) {
return Err(Error::Forbidden(format!(
"Reading from bucket {} not allowed for this key",
source_bucket
)));
}
let source_key = match source_key {
None => return Err(Error::BadRequest(format!("No source key specified"))),
Some(x) => x,
};
Ok(handle_copy(garage, &bucket, &key, &source_bucket, &source_key).await?)
} else {
// PutObject query
Ok(handle_put(garage, req, &bucket, &key).await?)
@ -148,7 +156,10 @@ async fn handler_inner(
} else if params.contains_key(&"uploadid".to_string()) {
// CompleteMultipartUpload call
let upload_id = params.get("uploadid").unwrap();
Ok(handle_complete_multipart_upload(garage, req, &bucket, &key, upload_id).await?)
Ok(
handle_complete_multipart_upload(garage, req, &bucket, &key, upload_id)
.await?,
)
} else {
Err(Error::BadRequest(format!(
"Not a CreateMultipartUpload call, what is it?"
@ -176,12 +187,9 @@ async fn handler_inner(
))
}
&Method::GET => {
if ["delimiter", "prefix"]
.iter()
.all(|x| params.contains_key(&x.to_string()))
{
if params.contains_key(&"prefix".to_string()) {
// ListObjects query
let delimiter = params.get("delimiter").unwrap();
let delimiter = params.get("delimiter").map(|x| x.as_str()).unwrap_or(&"");
let max_keys = params
.get("max-keys")
.map(|x| {
@ -191,7 +199,21 @@ async fn handler_inner(
})
.unwrap_or(Ok(1000))?;
let prefix = params.get("prefix").unwrap();
Ok(handle_list(garage, bucket, delimiter, max_keys, prefix).await?)
let urlencode_resp = params
.get("encoding-type")
.map(|x| x == "url")
.unwrap_or(false);
let marker = params.get("marker").map(String::as_str);
Ok(handle_list(
garage,
bucket,
delimiter,
max_keys,
prefix,
marker,
urlencode_resp,
)
.await?)
} else {
Err(Error::BadRequest(format!(
"Not a list call, so what is it?"
@ -202,3 +224,18 @@ async fn handler_inner(
}
}
}
fn parse_bucket_key(path: &str) -> Result<(&str, Option<&str>), Error> {
if !path.starts_with('/') {
return Err(Error::BadRequest(format!(
"Invalid path: {}, should start with a /",
path
)));
}
let path = &path[1..];
match path.find('/') {
Some(i) => Ok((&path[..i], Some(&path[i + 1..]))),
None => Ok((path, None)),
}
}

33
src/api/encoding.rs Normal file
View file

@ -0,0 +1,33 @@
pub fn xml_escape(s: &str) -> String {
s.replace("<", "&lt;")
.replace(">", "&gt;")
.replace("\"", "&quot;")
}
pub fn uri_encode(string: &str, encode_slash: bool) -> String {
let mut result = String::with_capacity(string.len() * 2);
for c in string.chars() {
match c {
'a'..='z' | 'A'..='Z' | '0'..='9' | '_' | '-' | '~' | '.' => result.push(c),
'/' if encode_slash => result.push_str("%2F"),
'/' if !encode_slash => result.push('/'),
_ => {
result.push_str(
&format!("{}", c)
.bytes()
.map(|b| format!("%{:02X}", b))
.collect::<String>(),
);
}
}
}
result
}
pub fn xml_encode_key(k: &str, urlencode: bool) -> String {
if urlencode {
uri_encode(k, true)
} else {
xml_escape(k)
}
}

6
src/api/http_util.rs
View file

@ -82,9 +82,3 @@ impl From<Vec<u8>> for BytesBody {
Self::new(Bytes::from(x))
}
}
pub fn xml_escape(s: &str) -> String {
s.replace("<", "&lt;")
.replace(">", "&gt;")
.replace("\"", "&quot;")
}

6
src/api/lib.rs
View file

@ -1,10 +1,14 @@
#[macro_use]
extern crate log;
pub mod api_server;
pub mod encoding;
pub mod http_util;
pub mod api_server;
pub mod signature;
pub mod s3_copy;
pub mod s3_delete;
pub mod s3_get;
pub mod s3_list;
pub mod s3_put;

120
src/api/s3_copy.rs Normal file
View file

@ -0,0 +1,120 @@
use std::fmt::Write;
use std::sync::Arc;
use chrono::{SecondsFormat, Utc};
use hyper::Response;
use garage_table::*;
use garage_util::data::*;
use garage_util::error::Error;
use garage_core::block_ref_table::*;
use garage_core::garage::Garage;
use garage_core::object_table::*;
use garage_core::version_table::*;
use crate::http_util::*;
pub async fn handle_copy(
garage: Arc<Garage>,
dest_bucket: &str,
dest_key: &str,
source_bucket: &str,
source_key: &str,
) -> Result<Response<BodyType>, Error> {
let source_object = match garage
.object_table
.get(&source_bucket.to_string(), &source_key.to_string())
.await?
{
None => return Err(Error::NotFound),
Some(o) => o,
};
let source_last_v = match source_object
.versions()
.iter()
.rev()
.filter(|v| v.is_complete())
.next()
{
Some(v) => v,
None => return Err(Error::NotFound),
};
let new_uuid = gen_uuid();
let dest_object_version = ObjectVersion {
uuid: new_uuid,
timestamp: now_msec(),
mime_type: source_last_v.mime_type.clone(),
size: source_last_v.size,
state: ObjectVersionState::Complete,
data: source_last_v.data.clone(),
};
match &source_last_v.data {
ObjectVersionData::Uploading => {
return Err(Error::Message(format!(
"Version is_complete() but data is stil Uploading (internal error)"
)));
}
ObjectVersionData::DeleteMarker => {
return Err(Error::NotFound);
}
ObjectVersionData::Inline(_bytes) => {
let dest_object = Object::new(
dest_bucket.to_string(),
dest_key.to_string(),
vec![dest_object_version],
);
garage.object_table.insert(&dest_object).await?;
}
ObjectVersionData::FirstBlock(_first_block_hash) => {
let source_version = garage
.version_table
.get(&source_last_v.uuid, &EmptyKey)
.await?;
let source_version = match source_version {
Some(v) => v,
None => return Err(Error::NotFound),
};
let dest_version = Version::new(
new_uuid,
dest_bucket.to_string(),
dest_key.to_string(),
false,
source_version.blocks().to_vec(),
);
let dest_object = Object::new(
dest_bucket.to_string(),
dest_key.to_string(),
vec![dest_object_version],
);
let dest_block_refs = dest_version
.blocks()
.iter()
.map(|b| BlockRef {
block: b.hash,
version: new_uuid,
deleted: false,
})
.collect::<Vec<_>>();
futures::try_join!(
garage.object_table.insert(&dest_object),
garage.version_table.insert(&dest_version),
garage.block_ref_table.insert_many(&dest_block_refs[..]),
)?;
}
}
let now = Utc::now();
let last_modified = now.to_rfc3339_opts(SecondsFormat::Secs, true);
let mut xml = String::new();
writeln!(&mut xml, r#"<?xml version="1.0" encoding="UTF-8"?>"#).unwrap();
writeln!(&mut xml, r#"<CopyObjectResult>"#).unwrap();
writeln!(&mut xml, "\t<LastModified>{}</LastModified>", last_modified).unwrap();
writeln!(&mut xml, "</CopyObjectResult>").unwrap();
Ok(Response::new(Box::new(BytesBody::from(xml.into_bytes()))))
}

54
src/api/s3_delete.rs Normal file
View file

@ -0,0 +1,54 @@
use std::sync::Arc;
use garage_util::data::*;
use garage_util::error::Error;
use garage_core::garage::Garage;
use garage_core::object_table::*;
pub async fn handle_delete(garage: Arc<Garage>, bucket: &str, key: &str) -> Result<UUID, Error> {
let object = match garage
.object_table
.get(&bucket.to_string(), &key.to_string())
.await?
{
None => {
// No need to delete
return Ok([0u8; 32].into());
}
Some(o) => o,
};
let interesting_versions = object.versions().iter().filter(|v| {
v.data != ObjectVersionData::DeleteMarker && v.state != ObjectVersionState::Aborted
});
let mut must_delete = false;
let mut timestamp = now_msec();
for v in interesting_versions {
must_delete = true;
timestamp = std::cmp::max(timestamp, v.timestamp + 1);
}
if !must_delete {
return Ok([0u8; 32].into());
}
let version_uuid = gen_uuid();
let object = Object::new(
bucket.into(),
key.into(),
vec![ObjectVersion {
uuid: version_uuid,
timestamp: now_msec(),
mime_type: "application/x-delete-marker".into(),
size: 0,
state: ObjectVersionState::Complete,
data: ObjectVersionData::DeleteMarker,
}],
);
garage.object_table.insert(&object).await?;
return Ok(version_uuid);
}

19
src/api/s3_list.rs
View file

@ -9,6 +9,7 @@ use garage_util::error::Error;
use garage_core::garage::Garage;
use crate::encoding::*;
use crate::http_util::*;
#[derive(Debug)]
@ -23,11 +24,13 @@ pub async fn handle_list(
delimiter: &str,
max_keys: usize,
prefix: &str,
marker: Option<&str>,
urlencode_resp: bool,
) -> Result<Response<BodyType>, Error> {
let mut result_keys = BTreeMap::<String, ListResultInfo>::new();
let mut result_common_prefixes = BTreeSet::<String>::new();
let mut truncated = true;
let mut next_chunk_start = prefix.to_string();
let mut next_chunk_start = marker.unwrap_or(prefix).to_string();
debug!("List request: `{}` {} `{}`", delimiter, max_keys, prefix);
@ -97,7 +100,12 @@ pub async fn handle_list(
let last_modif = DateTime::<Utc>::from_utc(last_modif, Utc);
let last_modif = last_modif.to_rfc3339_opts(SecondsFormat::Millis, true);
writeln!(&mut xml, "\t<Contents>").unwrap();
writeln!(&mut xml, "\t\t<Key>{}</Key>", xml_escape(key)).unwrap();
writeln!(
&mut xml,
"\t\t<Key>{}</Key>",
xml_encode_key(key, urlencode_resp)
)
.unwrap();
writeln!(&mut xml, "\t\t<LastModified>{}</LastModified>", last_modif).unwrap();
writeln!(&mut xml, "\t\t<Size>{}</Size>", info.size).unwrap();
writeln!(&mut xml, "\t\t<StorageClass>STANDARD</StorageClass>").unwrap();
@ -106,7 +114,12 @@ pub async fn handle_list(
if result_common_prefixes.len() > 0 {
writeln!(&mut xml, "\t<CommonPrefixes>").unwrap();
for pfx in result_common_prefixes.iter() {
writeln!(&mut xml, "\t<Prefix>{}</Prefix>", xml_escape(pfx)).unwrap();
writeln!(
&mut xml,
"\t<Prefix>{}</Prefix>",
xml_encode_key(pfx, urlencode_resp)
)
.unwrap();
}
writeln!(&mut xml, "\t</CommonPrefixes>").unwrap();
}

131
src/api/s3_put.rs
View file

@ -5,9 +5,9 @@ use std::sync::Arc;
use futures::stream::*;
use hyper::{Body, Request, Response};
use garage_table::*;
use garage_util::data::*;
use garage_util::error::Error;
use garage_table::*;
use garage_core::block::INLINE_THRESHOLD;
use garage_core::block_ref_table::*;
@ -15,6 +15,7 @@ use garage_core::garage::Garage;
use garage_core::object_table::*;
use garage_core::version_table::*;
use crate::encoding::*;
use crate::http_util::*;
pub async fn handle_put(
@ -30,7 +31,7 @@ pub async fn handle_put(
let mut chunker = BodyChunker::new(body, garage.config.block_size);
let first_block = match chunker.next().await? {
Some(x) => x,
None => return Err(Error::BadRequest(format!("Empty body"))),
None => vec![],
};
let mut object_version = ObjectVersion {
@ -58,7 +59,15 @@ pub async fn handle_put(
let object = Object::new(bucket.into(), key.into(), vec![object_version.clone()]);
garage.object_table.insert(&object).await?;
let total_size = read_and_put_blocks(&garage, version, 1, first_block, first_block_hash, &mut chunker).await?;
let total_size = read_and_put_blocks(
&garage,
version,
1,
first_block,
first_block_hash,
&mut chunker,
)
.await?;
// TODO: if at any step we have an error, we should undo everything we did
@ -80,8 +89,14 @@ async fn read_and_put_blocks(
chunker: &mut BodyChunker,
) -> Result<u64, Error> {
let mut next_offset = first_block.len();
let mut put_curr_version_block =
put_block_meta(garage.clone(), &version, part_number, 0, first_block_hash, first_block.len() as u64);
let mut put_curr_version_block = put_block_meta(
garage.clone(),
&version,
part_number,
0,
first_block_hash,
first_block.len() as u64,
);
let mut put_curr_block = garage
.block_manager
.rpc_put_block(first_block_hash, first_block);
@ -92,8 +107,14 @@ async fn read_and_put_blocks(
if let Some(block) = next_block {
let block_hash = hash(&block[..]);
let block_len = block.len();
put_curr_version_block =
put_block_meta(garage.clone(), &version, part_number, next_offset as u64, block_hash, block_len as u64);
put_curr_version_block = put_block_meta(
garage.clone(),
&version,
part_number,
next_offset as u64,
block_hash,
block_len as u64,
);
put_curr_block = garage.block_manager.rpc_put_block(block_hash, block);
next_offset += block_len;
} else {
@ -232,7 +253,8 @@ pub async fn handle_put_part(
.parse::<u64>()
.map_err(|e| Error::BadRequest(format!("Invalid part number: {}", e)))?;
let version_uuid = uuid_from_str(upload_id).map_err(|_| Error::BadRequest(format!("Invalid upload ID")))?;
let version_uuid =
uuid_from_str(upload_id).map_err(|_| Error::BadRequest(format!("Invalid upload ID")))?;
// Read first chuck, and at the same time try to get object to see if it exists
let mut chunker = BodyChunker::new(req.into_body(), garage.config.block_size);
@ -265,7 +287,15 @@ pub async fn handle_put_part(
// Copy block to store
let version = Version::new(version_uuid, bucket.into(), key.into(), false, vec![]);
let first_block_hash = hash(&first_block[..]);
read_and_put_blocks(&garage, version, part_number, first_block, first_block_hash, &mut chunker).await?;
read_and_put_blocks(
&garage,
version,
part_number,
first_block,
first_block_hash,
&mut chunker,
)
.await?;
Ok(Response::new(Box::new(BytesBody::from(vec![]))))
}
@ -277,7 +307,8 @@ pub async fn handle_complete_multipart_upload(
key: &str,
upload_id: &str,
) -> Result<Response<BodyType>, Error> {
let version_uuid = uuid_from_str(upload_id).map_err(|_| Error::BadRequest(format!("Invalid upload ID")))?;
let version_uuid =
uuid_from_str(upload_id).map_err(|_| Error::BadRequest(format!("Invalid upload ID")))?;
let bucket = bucket.to_string();
let key = key.to_string();
@ -295,9 +326,11 @@ pub async fn handle_complete_multipart_upload(
&& v.data == ObjectVersionData::Uploading
});
let mut object_version = match object_version {
None => return Err(Error::BadRequest(format!(
None => {
return Err(Error::BadRequest(format!(
"Multipart upload does not exist or has already been completed"
))),
)))
}
Some(x) => x.clone(),
};
let version = match version {
@ -311,7 +344,11 @@ pub async fn handle_complete_multipart_upload(
// TODO: check that all the parts that they pretend they gave us are indeed there
// TODO: check MD5 sum of all uploaded parts? but that would mean we have to store them somewhere...
let total_size = version.blocks().iter().map(|x| x.size).fold(0, |x, y| x+y);
let total_size = version
.blocks()
.iter()
.map(|x| x.size)
.fold(0, |x, y| x + y);
object_version.size = total_size;
object_version.state = ObjectVersionState::Complete;
object_version.data = ObjectVersionData::FirstBlock(version.blocks()[0].hash);
@ -325,7 +362,12 @@ pub async fn handle_complete_multipart_upload(
r#"<CompleteMultipartUploadResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">"#
)
.unwrap();
writeln!(&mut xml, "\t<Location>{}</Location>", garage.config.s3_api.s3_region).unwrap();
writeln!(
&mut xml,
"\t<Location>{}</Location>",
garage.config.s3_api.s3_region
)
.unwrap();
writeln!(&mut xml, "\t<Bucket>{}</Bucket>", bucket).unwrap();
writeln!(&mut xml, "\t<Key>{}</Key>", xml_escape(&key)).unwrap();
writeln!(&mut xml, "</CompleteMultipartUploadResult>").unwrap();
@ -339,9 +381,13 @@ pub async fn handle_abort_multipart_upload(
key: &str,
upload_id: &str,
) -> Result<Response<BodyType>, Error> {
let version_uuid = uuid_from_str(upload_id).map_err(|_| Error::BadRequest(format!("Invalid upload ID")))?;
let version_uuid =
uuid_from_str(upload_id).map_err(|_| Error::BadRequest(format!("Invalid upload ID")))?;
let object = garage.object_table.get(&bucket.to_string(), &key.to_string()).await?;
let object = garage
.object_table
.get(&bucket.to_string(), &key.to_string())
.await?;
let object = match object {
None => return Err(Error::BadRequest(format!("Object not found"))),
Some(x) => x,
@ -352,9 +398,11 @@ pub async fn handle_abort_multipart_upload(
&& v.data == ObjectVersionData::Uploading
});
let mut object_version = match object_version {
None => return Err(Error::BadRequest(format!(
None => {
return Err(Error::BadRequest(format!(
"Multipart upload does not exist or has already been completed"
))),
)))
}
Some(x) => x.clone(),
};
@ -383,50 +431,3 @@ fn uuid_from_str(id: &str) -> Result<UUID, ()> {
uuid.copy_from_slice(&id_bin[..]);
Ok(UUID::from(uuid))
}
pub async fn handle_delete(garage: Arc<Garage>, bucket: &str, key: &str) -> Result<UUID, Error> {
let object = match garage
.object_table
.get(&bucket.to_string(), &key.to_string())
.await?
{
None => {
// No need to delete
return Ok([0u8; 32].into());
}
Some(o) => o,
};
let interesting_versions = object.versions().iter().filter(|v| {
v.data != ObjectVersionData::DeleteMarker && v.state != ObjectVersionState::Aborted
});
let mut must_delete = false;
let mut timestamp = now_msec();
for v in interesting_versions {
must_delete = true;
timestamp = std::cmp::max(timestamp, v.timestamp + 1);
}
if !must_delete {
return Ok([0u8; 32].into());
}
let version_uuid = gen_uuid();
let object = Object::new(
bucket.into(),
key.into(),
vec![ObjectVersion {
uuid: version_uuid,
timestamp: now_msec(),
mime_type: "application/x-delete-marker".into(),
size: 0,
state: ObjectVersionState::Complete,
data: ObjectVersionData::DeleteMarker,
}],
);
garage.object_table.insert(&object).await?;
return Ok(version_uuid);
}

23
src/api/signature.rs
View file

@ -11,6 +11,8 @@ use garage_util::error::Error;
use garage_core::garage::Garage;
use garage_core::key_table::*;
use crate::encoding::uri_encode;
const SHORT_DATE: &str = "%Y%m%d";
const LONG_DATETIME: &str = "%Y%m%dT%H%M%SZ";
@ -284,24 +286,3 @@ fn canonical_query_string(uri: &hyper::Uri) -> String {
"".to_string()
}
}
fn uri_encode(string: &str, encode_slash: bool) -> String {
let mut result = String::with_capacity(string.len() * 2);
for c in string.chars() {
match c {
'a'..='z' | 'A'..='Z' | '0'..='9' | '_' | '-' | '~' | '.' => result.push(c),
'/' if encode_slash => result.push_str("%2F"),
'/' if !encode_slash => result.push('/'),
_ => {
result.push('%');
result.push_str(
&format!("{}", c)
.bytes()
.map(|b| format!("{:02X}", b))
.collect::<String>(),
);
}
}
}
result
}

10
src/core/version_table.rs
View file

@ -49,7 +49,10 @@ impl Version {
}
/// Adds a block if it wasn't already present
pub fn add_block(&mut self, new: VersionBlock) -> Result<(), ()> {
match self.blocks.binary_search_by(|b| b.cmp_key().cmp(&new.cmp_key())) {
match self
.blocks
.binary_search_by(|b| b.cmp_key().cmp(&new.cmp_key()))
{
Err(i) => {
self.blocks.insert(i, new);
Ok(())
@ -90,7 +93,10 @@ impl Entry<Hash, EmptyKey> for Version {
self.blocks.clear();
} else if !self.deleted {
for bi in other.blocks.iter() {
match self.blocks.binary_search_by(|x| x.cmp_key().cmp(&bi.cmp_key())) {
match self
.blocks
.binary_search_by(|x| x.cmp_key().cmp(&bi.cmp_key()))
{
Ok(_) => (),
Err(pos) => {
self.blocks.insert(pos, bi.clone());