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Persistent Local Storage for offchain workers. (#2894)

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* WiP.

* Implement offchain storage APIs.

* Change compare_and_set to return bool.

* Add offchain http test.

* Fix tests.

* Bump spec version.

* Fix warnings and test.

* Fix compilation.

* Remove unused code.

* Introduce Local (fork-aware) and Persistent storage.

* Fix borked merge.

* Prevent warning on depreacated client.backend

* Fix long lines.

* Clean up dependencies.

* Update core/primitives/src/offchain.rs

Co-Authored-By: André Silva <andre.beat@gmail.com>

* Update core/primitives/src/offchain.rs

Co-Authored-By: André Silva <andre.beat@gmail.com>
This commit is contained in:
Tomasz Drwięga
2019-07-02 20:11:06 +02:00
committed by Gavin Wood
parent 24aa882ebc
commit 2217c1e9a1
26 changed files with 726 additions and 118 deletions
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substrate/core/sr-io/without_std.rs
+16 -8
View File
@@ -459,17 +459,22 @@ pub mod ext {
fn ext_random_seed(data: *mut u8);
/// Write a value to local storage.
fn ext_local_storage_set(key: *const u8, key_len: u32, value: *const u8, value_len: u32);
fn ext_local_storage_set(kind: u32, key: *const u8, key_len: u32, value: *const u8, value_len: u32);
/// Write a value to local storage in atomic fashion.
///
/// # Returns
/// - `0` in case the value has been set
/// - `1` if the `old_value` didn't match
fn ext_local_storage_compare_and_set(
kind: u32,
key: *const u8,
key_len: u32,
old_value: *const u8,
old_value_len: u32,
new_value: *const u8,
new_value_len: u32
);
) -> u32;
/// Read a value from local storage.
///
@@ -478,7 +483,7 @@ pub mod ext {
///
/// - 0 if the value has not been found, the `value_len` is set to `u32::max_value`.
/// - Otherwise, pointer to the value in memory. `value_len` contains the length of the value.
fn ext_local_storage_get(key: *const u8, key_len: u32, value_len: *mut u32) -> *mut u8;
fn ext_local_storage_get(kind: u32, key: *const u8, key_len: u32, value_len: *mut u32) -> *mut u8;
/// Initiaties a http request.
///
@@ -932,7 +937,7 @@ impl OffchainApi for () {
})
}
fn sleep_until(deadline: Timestamp) {
fn sleep_until(deadline: offchain::Timestamp) {
unsafe {
ext_sleep_until.get()(deadline.unix_millis())
}
@@ -946,9 +951,10 @@ impl OffchainApi for () {
result
}
fn local_storage_set(key: &[u8], value: &[u8]) {
fn local_storage_set(kind: offchain::StorageKind, key: &[u8], value: &[u8]) {
unsafe {
ext_local_storage_set.get()(
kind as u8 as u32,
key.as_ptr(),
key.len() as u32,
value.as_ptr(),
@@ -957,23 +963,25 @@ impl OffchainApi for () {
}
}
fn local_storage_compare_and_set(key: &[u8], old_value: &[u8], new_value: &[u8]) {
fn local_storage_compare_and_set(kind: offchain::StorageKind, key: &[u8], old_value: &[u8], new_value: &[u8]) -> bool {
unsafe {
ext_local_storage_compare_and_set.get()(
kind as u8 as u32,
key.as_ptr(),
key.len() as u32,
old_value.as_ptr(),
old_value.len() as u32,
new_value.as_ptr(),
new_value.len() as u32,
)
) == 0
}
}
fn local_storage_get(key: &[u8]) -> Option<Vec<u8>> {
fn local_storage_get(kind: offchain::StorageKind, key: &[u8]) -> Option<Vec<u8>> {
let mut len = 0u32;
unsafe {
let ptr = ext_local_storage_get.get()(
kind as u8 as u32,
key.as_ptr(),
key.len() as u32,
&mut len,