Commit Graph

12 Commits

Author SHA1 Message Date
Olaoluwa Osuntokun
4d647b6e5d
lnrpc/signrpc: add macaroon perms for ComputeInputScript 2018-12-09 15:10:35 -08:00
Olaoluwa Osuntokun
273dee607b
lnrpc: remove oneof from signrpc.KeyDescriptor 2018-12-06 16:25:38 -08:00
Olaoluwa Osuntokun
097b6f7f6d lnrpc/walletrpc: add new sub-RPC server, the WalletKit
In this commit, we add a new sub-RPC server to the existing set of gRPC
servers. This new sub-RPC server is the WalletKit. It's a utility
toolkit that contains method which allow clients to perform common
interactions with a wallet such as getting a new address, or sending a
transaction. It also includes some supplementary actions such as fee
estimation.

One thing to note in the RPC file is that we _import_ the existing
signer.proto file in order to get at some existing proto definitions
which are useful in our use case.
2018-12-06 16:24:54 -08:00
Olaoluwa Osuntokun
b0a7a57f57
lnrpc/signrpc: add ComputeInputScript implementation 2018-11-28 20:57:13 -08:00
Olaoluwa Osuntokun
6c201e435a
lnrpc/signrpc: add ComputeInputScript to the Signer sub-server
In this commit, we add the ComputeInputScript which will allow callers
to obtain witnesses for all outputs under control of the wallet. This
allows external scripting of things like coin join, etc.
2018-11-28 20:57:11 -08:00
Olaoluwa Osuntokun
35b4b35eae
lnrpc: add new recursive proto generation script
In this commit, we add a recursive proto generation script. This avoids
having to add a new script for each upcoming sub-server.
2018-11-28 20:57:08 -08:00
Olaoluwa Osuntokun
4002caec69
config+rpc: create new generalized dynamic sub rpc server config framework
In this commit, we add the glue infrastructure to make the sub RPC
server system work properly. Our high level goal is the following: using
only the lnrpc package (with no visibility into the sub RPC servers),
the RPC server is able to find, create, run, and manage the entire set
of present and future sub RPC servers. In order to achieve this, we use
the reflect package and build tags heavily to permit a loosely coupled
configuration parsing system for the sub RPC servers.

We start with a new `subRpcServerConfigs` struct which is _always_
present.  This struct has its own group, and will house a series of
sub-configs, one for each sub RPC server. Each sub-config is actually
gated behind a build flag, and can be used to allow users on the command
line or in the config to specify arguments related to the sub-server. If
the config isn't present, then we don't attempt to parse it at all, if
it is, then that means the RPC server has been registered, and we should
parse the contents of its config.

The `subRpcServerConfigs` struct has two main methods:
`PopulateDependancies` and `FetchConfig`. The `PopulateDependancies` is
used to dynamically locate and set the config fields for each new
sub-server. As the config may not actually have any fields (if the build
flag is off), we use the reflect pacakge to determine if things are
compiled in or not, then if so, we dynamically set each of the config
parameters. The `PopulateDependancies` method implements the
`lnrpc.SubServerConfigDispatcher` interface. Our goal is to allow sub
servers to look up their actual config in this main config struct. We
achieve this by using reflect to look up the target field _as if it were
a key in a map_. If the field is found, then we check if it has any
actual attributes (it won't if the build flag is off), if it is, then we
return it as we expect it to be populated already.
2018-11-28 20:57:05 -08:00
Olaoluwa Osuntokun
8971931aa3
lnrpc/signrpc: add lnrpc.SubServerDriver for signrpc
In this commit, we create a lnrpc.SubServerDriver for signrpc. Note that
this file will only have its init() method executed if the proper build
flag is on. As a result, only if the build flag is set, will the RPC
server be registered, and visible at the packge lnrpc level for the root
server to manipulate.
2018-11-28 20:57:03 -08:00
Olaoluwa Osuntokun
b7757683b2
lnrpc/signrpc: implement new SignerServer sub RPC server
In this commit, we add a full implementation of the new SignerServer sub
RPC service within the main root RPC service. This service is able to
fully manage its macaroons, and service any connected clients. Atm, this
service only has a single method: SignOutputRaw which mimics the
existing lnwallet.Signer interface within lnd itself. As the API's are
so similar, it will be possible for a client to directly use the
lnwallet.Signer interface, and have a proxy that sends the request over
RPC, and translates the proto layer on both sides. To the client, it
doesn't know that it's using a remote, or local RPC.
2018-11-28 20:57:01 -08:00
Olaoluwa Osuntokun
9f24049bbc
lnrpc/signrpc: add new gen_protos.sh to generate minimal protos
In this commit, we add a new proto generation script to match the one in
the main lnrpc package. This script differs, as we don't need to
generate the REST proxy stuff (for now).
2018-11-28 20:56:59 -08:00
Olaoluwa Osuntokun
bbbdd7f6e9
lnrpc/signrpc: add and generate new set of protos for Signer service 2018-11-28 20:56:58 -08:00
Olaoluwa Osuntokun
a432f9a4c8 lnrpc/signrpc: create new signrpc package with build-flag guarded config
In this commit, we introduce a new sub-package within the greater RPC
package.  This new sub-package will house a new set of sub-RPC servers
to expose experimental features behind build flags for upstream
consumers. In this commit, we add the first config for the service,
which will simply expose the lnwallet.Signer interface over RPC.

In the default file, we have what the config will be if the build tag
(signerrpc) is off. In this case, the config parser won't detect any
times, and if specified will error out. In the active file, we have the
true config that the server will use. With this new set up, we'll
exploit these build flags heavily in order to create a generalized
framework for adding additional sub RPC servers.
2018-11-28 20:56:38 -08:00