Service factory refactor (#3382)

* Move Service::new to a macro

* Move function calls to macros

* Extract offchain_workers and start_rpc in separate function

In follow-up commits, we want to be able to directly call maintain_transaction_pool, offchain_workers, and start_rpc, without having to implement the Components trait.
This commit is a preliminary step: we extract the code to freestanding functions.

* Introduce an AbstractService trait

* Introduce NewService as an implementation detail of Service

* Implement traits on NewService instead

Instead of implementing AbstractService, Future, and Executor on Service, we implement them on NewService instead.

The implementations of AbstractService, Future, and Executor on Service still exist, but they just wrap to the respective implementations for NewService.

* Move components creation back to macro invocation

Instead of having multiple $build_ parameters passed to the macro, let's group them all into one.

This change is necessary for the follow-up commits, because we are going to call new_impl! only after all the components have already been built.

* Add a $block parameter to new_impl

This makes it possible to be explicit as what the generic parameter of the NewServiceis, without relying on type inference.

* Introduce the ServiceBuilder struct

Introduces a new builder-like ServiceBuilder struct that creates a NewService.

* Macro-ify import_blocks, export_blocks and revert_chain

Similar to the introduction of new_impl!, we extract the actual code into a macro, letting us get rid of the Components and Factory traits

* Add export_blocks, import_blocks and revert_chain methods on ServiceBuilder

Can be used as a replacement for the chain_ops::* methods

* Add run_with_builder

Instead of just run, adds run_with_builder to ParseAndPrepareExport/Import/Revert. This lets you run these operations with a ServiceBuilder instead of a ServiceFactory.

* Transition node and node-template to ServiceBuilder

* Transition transaction-factory to the new service factory

This is technically a breaking change, but the transaction-factory crate is only ever used from within substrate-node, which this commit updates as well.

* Remove old service factory

* Adjust the AbstractService trait to be more usable

We slightly change the trait bounds in order to make all the methods usable.

* Make substrate-service-test compile

* Fix the node-cli tests

* Remove the old API

* Remove the components module

* Fix indentation on chain_ops

* Line widths

* Fix bad line widths commit

* Line widths again 🤦

* Fix the sync test

* Apply suggestions from code review

Co-Authored-By: Gavin Wood <i@gavwood.com>

* Address some concerns

* Remove TelemetryOnConnect

* Remove informant::start

* Update jsonrpc

* Rename factory to builder

* Line widths 😩

substrate/Cargo.lock

@@ -1344,6 +1344,16 @@ dependencies = [
  "unicode-normalization 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "idna"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-bidi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-normalization 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "impl-codec"
 version = "0.4.0"
@@ -1421,24 +1431,25 @@ dependencies = [
 
 [[package]]
 name = "jsonrpc-client-transports"
-version = "13.0.0"
+version = "13.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.12.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-pubsub 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-pubsub 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.97 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "websocket 0.23.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "jsonrpc-core"
-version = "13.0.0"
+version = "13.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1450,15 +1461,15 @@ dependencies = [
 
 [[package]]
 name = "jsonrpc-core-client"
-version = "13.0.0"
+version = "13.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "jsonrpc-client-transports 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-client-transports 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "jsonrpc-derive"
-version = "13.0.0"
+version = "13.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1469,12 +1480,12 @@ dependencies = [
 
 [[package]]
 name = "jsonrpc-http-server"
-version = "13.0.0"
+version = "13.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "hyper 0.12.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-server-utils 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-server-utils 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1483,10 +1494,10 @@ dependencies = [
 
 [[package]]
 name = "jsonrpc-pubsub"
-version = "13.0.0"
+version = "13.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "jsonrpc-core 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.97 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1494,12 +1505,12 @@ dependencies = [
 
 [[package]]
 name = "jsonrpc-server-utils"
-version = "13.0.0"
+version = "13.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "globset 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1510,15 +1521,15 @@ dependencies = [
 
 [[package]]
 name = "jsonrpc-ws-server"
-version = "13.0.0"
+version = "13.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "jsonrpc-core 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-server-utils 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-server-utils 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "ws 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ws 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2298,7 +2309,7 @@ dependencies = [
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-preview 0.3.0-alpha.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex-literal 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "node-executor 2.0.0",
  "node-primitives 2.0.0",
@@ -2388,10 +2399,10 @@ name = "node-rpc"
 version = "2.0.0"
 dependencies = [
  "env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core-client 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-derive 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-pubsub 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core-client 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-derive 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-pubsub 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "node-primitives 2.0.0",
  "node-runtime 2.0.0",
@@ -2412,7 +2423,7 @@ dependencies = [
  "env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.12.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core-client 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core-client 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "node-primitives 2.0.0",
  "substrate-rpc 2.0.0",
@@ -2934,6 +2945,11 @@ name = "percent-encoding"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "percent-encoding"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "pin-utils"
 version = "0.1.0-alpha.4"
@@ -4769,7 +4785,6 @@ dependencies = [
  "substrate-keystore 2.0.0",
  "substrate-network 2.0.0",
  "substrate-primitives 2.0.0",
- "substrate-service 2.0.0",
  "substrate-telemetry 2.0.0",
  "substrate-test-runtime-client 2.0.0",
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4975,10 +4990,10 @@ dependencies = [
  "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-preview 0.3.0-alpha.17 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core-client 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-derive 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-pubsub 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core-client 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-derive 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-pubsub 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5004,10 +5019,10 @@ dependencies = [
 name = "substrate-rpc-servers"
 version = "2.0.0"
 dependencies = [
- "jsonrpc-core 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-http-server 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-pubsub 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-ws-server 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-http-server 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-pubsub 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-ws-server 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.97 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0",
@@ -5746,7 +5761,7 @@ name = "twox-hash"
 version = "1.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "rand 0.3.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5845,6 +5860,16 @@ dependencies = [
  "percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "url"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "idna 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "percent-encoding 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "utf8-ranges"
 version = "1.0.3"
@@ -6157,7 +6182,7 @@ dependencies = [
 
 [[package]]
 name = "ws"
-version = "0.8.1"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6169,7 +6194,7 @@ dependencies = [
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha-1 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -6389,6 +6414,7 @@ dependencies = [
 "checksum hyper 0.12.33 (registry+https://github.com/rust-lang/crates.io-index)" = "7cb44cbce9d8ee4fb36e4c0ad7b794ac44ebaad924b9c8291a63215bb44c2c8f"
 "checksum hyper-tls 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "3a800d6aa50af4b5850b2b0f659625ce9504df908e9733b635720483be26174f"
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+"checksum idna 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "02e2673c30ee86b5b96a9cb52ad15718aa1f966f5ab9ad54a8b95d5ca33120a9"
 "checksum impl-codec 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "78c441b3d2b5e24b407161e76d482b7bbd29b5da357707839ac40d95152f031f"
 "checksum impl-serde 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5158079de9d4158e0ce1de3ae0bd7be03904efc40b3d7dd8b8c301cbf6b52b56"
 "checksum impl-serde 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7d26be4b97d738552ea423f76c4f681012ff06c3fa36fa968656b3679f60b4a1"
@@ -6400,14 +6426,14 @@ dependencies = [
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-"checksum jsonrpc-core 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "34d379861584fe4e3678f6ae9ee60b41726df2989578c1dc0f90190dfc92dbe0"
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-"checksum jsonrpc-http-server 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "aad55e8dd67c2c5b16436738b0baf319a6b353feba7401dbc1508a0bd8bd451f"
-"checksum jsonrpc-pubsub 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "583f5930821dbc043236fe5d672d496ead7ff83d21351146598386c66fe8722a"
-"checksum jsonrpc-server-utils 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "04f18ca34046c249751fe90428e77e9570beaa03b33a108e74418a586063d07d"
-"checksum jsonrpc-ws-server 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "aee1265de937bd53ad0fc95ff5817314922ce009fa99a04a09fdf449b140ddf6"
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+"checksum jsonrpc-core 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "dd42951eb35079520ee29b7efbac654d85821b397ef88c8151600ef7e2d00217"
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+"checksum jsonrpc-derive 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "29f9149f785deaae92a4c834a9a1a83a4313b8cfedccf15362cd4cf039a64501"
+"checksum jsonrpc-http-server 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4edd28922653d79e4f6c0f5d0a1034a4edbc5f9cf6cad8ec85e2a685713e3708"
+"checksum jsonrpc-pubsub 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2c08b444cc0ed70263798834343d0ac875e664257df8079160f23ac1ea79446"
+"checksum jsonrpc-server-utils 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "44561bfdd31401bad790527f1e951dde144f2341ddc3e1b859d32945e1a34eff"
+"checksum jsonrpc-ws-server 13.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d230ff76a8e4a3fb068aab6ba23d0c4e7d6e3b41bca524daa33988b04b065265"
 "checksum keccak 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "67c21572b4949434e4fc1e1978b99c5f77064153c59d998bf13ecd96fb5ecba7"
 "checksum keccak-hasher 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)" = "3468207deea1359a0e921591ae9b4c928733d94eb9d6a2eeda994cfd59f42cf8"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
@@ -6512,6 +6538,7 @@ dependencies = [
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