From 16bab364faa02d29121f95ad72fa7b0946eba95a Mon Sep 17 00:00:00 2001
From: Benjamin Kampmann <ben@gnunicorn.org>
Date: Tue, 22 Oct 2019 19:44:54 +0200
Subject: [PATCH 1/3] expose offchain worker storage prefix

---
 core/offchain/src/api.rs | 2 +-
 core/offchain/src/lib.rs | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/offchain/src/api.rs b/core/offchain/src/api.rs
index 35b6e20df2b29..d1f2072ade2be 100644
--- a/core/offchain/src/api.rs
+++ b/core/offchain/src/api.rs
@@ -71,7 +71,7 @@ fn unavailable_yet<R: Default>(name: &str) -> R {
 }
 
 const LOCAL_DB: &str = "LOCAL (fork-aware) DB";
-const STORAGE_PREFIX: &[u8] = b"storage";
+pub const STORAGE_PREFIX: &[u8] = b"storage";
 
 impl<Storage, Block> OffchainExt for Api<Storage, Block>
 where
diff --git a/core/offchain/src/lib.rs b/core/offchain/src/lib.rs
index a335ca53807ab..248a47ef25029 100644
--- a/core/offchain/src/lib.rs
+++ b/core/offchain/src/lib.rs
@@ -54,6 +54,7 @@ mod api;
 pub mod testing;
 
 pub use offchain_primitives::OffchainWorkerApi;
+pub use api::STORAGE_PREFIX;
 
 /// An offchain workers manager.
 pub struct OffchainWorkers<Client, Storage, Block: traits::Block> {

From 10d72939d51cd06c3cf72354ec1c8828d57dd900 Mon Sep 17 00:00:00 2001
From: Benjamin Kampmann <ben@gnunicorn.org>
Date: Wed, 23 Oct 2019 11:25:45 +0200
Subject: [PATCH 2/3] add docs

---
 core/offchain/src/api.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/core/offchain/src/api.rs b/core/offchain/src/api.rs
index d1f2072ade2be..0b48c41f3e0dd 100644
--- a/core/offchain/src/api.rs
+++ b/core/offchain/src/api.rs
@@ -71,6 +71,7 @@ fn unavailable_yet<R: Default>(name: &str) -> R {
 }
 
 const LOCAL_DB: &str = "LOCAL (fork-aware) DB";
+/// Local Storage Prefix used by the Offchain Worker API to
 pub const STORAGE_PREFIX: &[u8] = b"storage";
 
 impl<Storage, Block> OffchainExt for Api<Storage, Block>

From 11b6e6789bee8984ca4ca8ab556019a981c453c1 Mon Sep 17 00:00:00 2001
From: Benjamin Kampmann <ben@gnunicorn.org>
Date: Thu, 31 Oct 2019 12:47:16 +0100
Subject: [PATCH 3/3] move STORAGE_PREFIX to primitives

---
 core/offchain/primitives/src/lib.rs | 3 +++
 core/offchain/src/api.rs            | 3 +--
 core/offchain/src/lib.rs            | 3 +--
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/core/offchain/primitives/src/lib.rs b/core/offchain/primitives/src/lib.rs
index dda08ae43f570..79fed8cb34150 100644
--- a/core/offchain/primitives/src/lib.rs
+++ b/core/offchain/primitives/src/lib.rs
@@ -22,6 +22,9 @@
 use client::decl_runtime_apis;
 use sr_primitives::traits::NumberFor;
 
+/// Local Storage Prefix used by the Offchain Worker API to
+pub const STORAGE_PREFIX: &[u8] = b"storage";
+
 decl_runtime_apis! {
 	/// The offchain worker api.
 	pub trait OffchainWorkerApi {
diff --git a/core/offchain/src/api.rs b/core/offchain/src/api.rs
index 0b48c41f3e0dd..b4d55e5f06823 100644
--- a/core/offchain/src/api.rs
+++ b/core/offchain/src/api.rs
@@ -30,6 +30,7 @@ use primitives::offchain::{
 	Externalities as OffchainExt, HttpRequestId, Timestamp, HttpRequestStatus, HttpError,
 	OpaqueNetworkState, OpaquePeerId, OpaqueMultiaddr, StorageKind,
 };
+pub use offchain_primitives::STORAGE_PREFIX;
 use sr_primitives::{generic::BlockId, traits::{self, Extrinsic}};
 use transaction_pool::txpool::{Pool, ChainApi};
 
@@ -71,8 +72,6 @@ fn unavailable_yet<R: Default>(name: &str) -> R {
 }
 
 const LOCAL_DB: &str = "LOCAL (fork-aware) DB";
-/// Local Storage Prefix used by the Offchain Worker API to
-pub const STORAGE_PREFIX: &[u8] = b"storage";
 
 impl<Storage, Block> OffchainExt for Api<Storage, Block>
 where
diff --git a/core/offchain/src/lib.rs b/core/offchain/src/lib.rs
index 248a47ef25029..69147295896ba 100644
--- a/core/offchain/src/lib.rs
+++ b/core/offchain/src/lib.rs
@@ -53,8 +53,7 @@ mod api;
 
 pub mod testing;
 
-pub use offchain_primitives::OffchainWorkerApi;
-pub use api::STORAGE_PREFIX;
+pub use offchain_primitives::{OffchainWorkerApi, STORAGE_PREFIX};
 
 /// An offchain workers manager.
 pub struct OffchainWorkers<Client, Storage, Block: traits::Block> {