Chain-selection from UI

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 description = "Parity Ethereum client"
 name = "parity"
-version = "1.6.0"
+version = "1.7.0"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 

ethcore/src/client/client.rs

@@ -151,8 +151,9 @@ pub struct Client {
 	factories: Factories,
 	history: u64,
 	rng: Mutex<OsRng>,
-	on_mode_change: Mutex<Option<Box<FnMut(&Mode) + 'static + Send>>>,
+	on_user_defaults_change: Mutex<Option<Box<FnMut(Option<Mode>) + 'static + Send>>>,
 	registrar: Mutex<Option<Registry>>,
+	exit_handler: Mutex<Option<Box<Fn(bool, Option<String>) + 'static + Send>>>,
 }
 
 impl Client {
@@ -240,8 +241,9 @@ impl Client {
 			factories: factories,
 			history: history,
 			rng: Mutex::new(OsRng::new().map_err(::util::UtilError::StdIo)?),
-			on_mode_change: Mutex::new(None),
+			on_user_defaults_change: Mutex::new(None),
 			registrar: Mutex::new(None),
+			exit_handler: Mutex::new(None),
 		});
 
 		{
@@ -276,6 +278,25 @@ impl Client {
 		self.notify.write().push(Arc::downgrade(&target));
 	}
 
+	/// Set a closure to call when we want to restart the client
+	pub fn set_exit_handler<F>(&self, f: F) where F: Fn(bool, Option<String>) + 'static + Send {
+		*self.exit_handler.lock() = Some(Box::new(f));
+	}
+
+	/// Hypervisor should restart this client.
+	pub fn restart(&self) {
+		if let Some(ref h) = *self.exit_handler.lock() {
+			(*h)(true, None);
+		}
+	}
+
+	/// Hypervisor should kill this client.
+	pub fn exit(&self) {
+		if let Some(ref h) = *self.exit_handler.lock() {
+			(*h)(false, None);
+		}
+	}
+
 	/// Returns engine reference.
 	pub fn engine(&self) -> &Engine {
 		&*self.engine
@@ -294,9 +315,9 @@ impl Client {
 		self.registrar.lock()
 	}
 
-	/// Register an action to be done if a mode change happens.
-	pub fn on_mode_change<F>(&self, f: F) where F: 'static + FnMut(&Mode) + Send {
-		*self.on_mode_change.lock() = Some(Box::new(f));
+	/// Register an action to be done if a mode/spec_name change happens.
+	pub fn on_user_defaults_change<F>(&self, f: F) where F: 'static + FnMut(Option<Mode>) + Send {
+		*self.on_user_defaults_change.lock() = Some(Box::new(f));
 	}
 
 	/// Flush the block import queue.
@@ -651,7 +672,6 @@ impl Client {
 		self.miner.clone()
 	}
 
-
 	/// Replace io channel. Useful for testing.
 	pub fn set_io_channel(&self, io_channel: IoChannel<ClientIoMessage>) {
 		*self.io_channel.lock() = io_channel;
@@ -1030,9 +1050,9 @@ impl BlockChainClient for Client {
 			let mut mode = self.mode.lock();
 			*mode = new_mode.clone().into();
 			trace!(target: "mode", "Mode now {:?}", &*mode);
-			if let Some(ref mut f) = *self.on_mode_change.lock() {
+			if let Some(ref mut f) = *self.on_user_defaults_change.lock() {
 				trace!(target: "mode", "Making callback...");
-				f(&*mode)
+				f(Some((&*mode).clone()))
 			}
 		}
 		match new_mode {
@@ -1042,6 +1062,22 @@ impl BlockChainClient for Client {
 		}
 	}
 
+	fn spec_name(&self) -> String {
+		self.config.spec_name.clone()
+	}
+
+	fn set_spec_name(&self, new_spec_name: String) {
+		trace!(target: "mode", "Client::set_spec_name({:?})", new_spec_name);
+		if !self.enabled.load(AtomicOrdering::Relaxed) {
+			return;
+		}
+		if let Some(ref h) = *self.exit_handler.lock() {
+			(*h)(true, Some(new_spec_name));
+		} else {
+			warn!("Not hypervised; cannot change chain.");
+		}
+	}
+
 	fn best_block_header(&self) -> encoded::Header {
 		self.chain.read().best_block_header()
 	}

ethcore/src/client/config.rs

@@ -123,6 +123,8 @@ pub struct ClientConfig {
 	pub db_wal: bool,
 	/// Operating mode
 	pub mode: Mode,
+	/// The chain spec name
+	pub spec_name: String,
 	/// Type of block verifier used by client.
 	pub verifier_type: VerifierType,
 	/// State db cache-size.

ethcore/src/client/test_client.rs

@@ -721,6 +721,10 @@ impl BlockChainClient for TestBlockChainClient {
 
 	fn set_mode(&self, _: Mode) { unimplemented!(); }
 
+	fn spec_name(&self) -> String { "foundation".into() }
+
+	fn set_spec_name(&self, _: String) { unimplemented!(); }
+
 	fn disable(&self) { unimplemented!(); }
 
 	fn pruning_info(&self) -> PruningInfo {

ethcore/src/client/traits.rs

@@ -241,6 +241,12 @@ pub trait BlockChainClient : Sync + Send {
 	/// Set the mode.
 	fn set_mode(&self, mode: Mode);
 
+	/// Get the chain spec name.
+	fn spec_name(&self) -> String;
+
+	/// Set the chain via a spec name.
+	fn set_spec_name(&self, spec_name: String);
+
 	/// Disable the client from importing blocks. This cannot be undone in this session and indicates
 	/// that a subsystem has reason to believe this executable incapable of syncing the chain.
 	fn disable(&self);

js/src/api/rpc/parity/parity.js

@@ -284,9 +284,15 @@ export default class Parity {
       .execute('parity_mode');
   }
 
+  // DEPRECATED - use chain instead.
   netChain () {
     return this._transport
-      .execute('parity_netChain');
+      .execute('parity_chain');
+  }
+
+  chain () {
+    return this._transport
+      .execute('parity_chain');
   }
 
   netPeers () {
@@ -454,6 +460,11 @@ export default class Parity {
       .execute('parity_setMode', mode);
   }
 
+  setChain (specName) {
+    return this._transport
+      .execute('parity_setChain', specName);
+  }
+
   setNewDappsAddresses (addresses) {
     return this._transport
       .execute('parity_setNewDappsAddresses', addresses ? inAddresses(addresses) : null);

js/src/jsonrpc/interfaces/parity.js

@@ -199,7 +199,7 @@ export default {
         '2017-01-20 18:14:19  Configured for DevelopmentChain using InstantSeal engine',
         '2017-01-20 18:14:19  Operating mode: active',
         '2017-01-20 18:14:19  State DB configuration: fast',
-        '2017-01-20 18:14:19  Starting Parity/v1.6.0-unstable-2ae8b4c-20170120/x86_64-linux-gnu/rustc1.14.0'
+        '2017-01-20 18:14:19  Starting Parity/v1.7.0-unstable-2ae8b4c-20170120/x86_64-linux-gnu/rustc1.14.0'
       ]
     }
   },

js/src/views/Settings/Parity/parity.js

@@ -35,6 +35,7 @@ export default class Parity extends Component {
   features = FeaturesStore.get();
 
   componentWillMount () {
+    this.store.loadChain();
     return this.store.loadMode();
   }
 
@@ -50,11 +51,12 @@ export default class Parity extends Component {
             <div>
               <FormattedMessage
                 id='settings.parity.overview_0'
-                defaultMessage='Control the Parity node settings and mode of operation via this interface.'
+                defaultMessage='Control the Parity node settings and nature of syncing via this interface.'
               />
             </div>
           </div>
           <div className={ layout.details }>
+            { this.renderChains() }
             { this.renderModes() }
             <Features />
             <LanguageSelector />
@@ -65,12 +67,12 @@ export default class Parity extends Component {
     );
   }
 
-  renderItem (mode, label) {
+  renderItem (name, label) {
     return (
       <MenuItem
-        key={ mode }
+        key={ name }
         label={ label }
-        value={ mode }
+        value={ name }
       >
         { label }
       </MenuItem>
@@ -134,7 +136,7 @@ export default class Parity extends Component {
         hint={
           <FormattedMessage
             id='settings.parity.modes.hint'
-            defaultMessage='the syning mode for the Parity node'
+            defaultMessage='the syncing mode for the Parity node'
           />
         }
         label={
@@ -182,7 +184,100 @@ export default class Parity extends Component {
     );
   }
 
+  renderChains () {
+    const { chain } = this.store;
+
+    return (
+      <Select
+        id='parityChainSelect'
+        hint={
+          <FormattedMessage
+            id='settings.parity.chains.hint'
+            defaultMessage='the chain for the Parity node to sync to'
+          />
+        }
+        label={
+          <FormattedMessage
+            id='settings.parity.chains.label'
+            defaultMessage='chain/network to sync'
+          />
+        }
+        onChange={ this.onChangeChain }
+        value={ chain }
+      >
+        {
+          this.renderItem('foundation', (
+            <FormattedMessage
+              id='settings.parity.chains.chain_foundation'
+              defaultMessage='Parity syncs to the Ethereum network launched by the Ethereum Foundation'
+            />
+          ))
+        }
+        {
+          this.renderItem('kovan', (
+            <FormattedMessage
+              id='settings.parity.chains.chain_kovan'
+              defaultMessage='Parity syncs to the Kovan test network'
+            />
+          ))
+        }
+        {
+          this.renderItem('olympic', (
+            <FormattedMessage
+              id='settings.parity.chains.chain_olympic'
+              defaultMessage='Parity syncs to the Olympic test network'
+            />
+          ))
+        }
+        {
+          this.renderItem('morden', (
+            <FormattedMessage
+              id='settings.parity.chains.cmorden_kovan'
+              defaultMessage='Parity syncs to Morden (Classic) test network'
+            />
+          ))
+        }
+        {
+          this.renderItem('ropsten', (
+            <FormattedMessage
+              id='settings.parity.chains.chain_ropsten'
+              defaultMessage='Parity syncs to the Ropsten test network'
+            />
+          ))
+        }
+        {
+          this.renderItem('classic', (
+            <FormattedMessage
+              id='settings.parity.chains.chain_classic'
+              defaultMessage='Parity syncs to the Ethereum Classic network'
+            />
+          ))
+        }
+        {
+          this.renderItem('expanse', (
+            <FormattedMessage
+              id='settings.parity.chains.chain_expanse'
+              defaultMessage='Parity syncs to the Expanse network'
+            />
+          ))
+        }
+        {
+          this.renderItem('dev', (
+            <FormattedMessage
+              id='settings.parity.chains.chain_dev'
+              defaultMessage='Parity uses a local development chain'
+            />
+          ))
+        }
+      </Select>
+    );
+  }
+
   onChangeMode = (event, index, mode) => {
     this.store.changeMode(mode || event.target.value);
   }
+
+  onChangeChain = (event, index, chain) => {
+    this.store.changeChain(chain || event.target.value);
+  }
 }

js/src/views/Settings/Parity/parity.spec.js

@@ -38,10 +38,12 @@ describe('views/Settings/Parity', () => {
   beforeEach(() => {
     render();
     sinon.spy(instance.store, 'loadMode');
+    sinon.spy(instance.store, 'loadChain');
   });
 
   afterEach(() => {
     instance.store.loadMode.restore();
+    instance.store.loadChain.restore();
   });
 
   it('renders defaults', () => {
@@ -56,6 +58,10 @@ describe('views/Settings/Parity', () => {
     it('loads the mode in the store', () => {
       expect(instance.store.loadMode).to.have.been.called;
     });
+
+    it('loads the chain in the store', () => {
+      expect(instance.store.loadChain).to.have.been.called;
+    });
   });
 
   describe('components', () => {
@@ -94,5 +100,27 @@ describe('views/Settings/Parity', () => {
         expect(instance.store.changeMode).to.have.been.calledWith('dark');
       });
     });
+
+    describe('chain selector', () => {
+      let select;
+
+      beforeEach(() => {
+        select = component.find('Select[id="parityChainSelect"]');
+        sinon.spy(instance.store, 'changeChain');
+      });
+
+      afterEach(() => {
+        instance.store.changeChain.restore();
+      });
+
+      it('renders a chain selector', () => {
+        expect(select).to.have.length(1);
+      });
+
+      it('changes the chain on the store when changed', () => {
+        select.simulate('change', { target: { value: 'dark' } });
+        expect(instance.store.changeChain).to.have.been.calledWith('dark');
+      });
+    });
   });
 });