Merge pull request #6 from vulcanize/updates

each endpoint cycles through proxy rpc clients independently

cmd/proxy.go

@@ -12,7 +12,6 @@ import (
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 	"github.com/vulcanize/gap-filler/pkg/mux"
-	"github.com/vulcanize/gap-filler/pkg/qlservices"
 )
 
 var (
@@ -40,22 +39,12 @@ var (
 				return err
 			}
 
-			rpcBalancer, err := qlservices.NewBalancer(rpcClients)
-			if err != nil {
-				return err
-			}
-
 			tracingClients, err := parseRpcAddresses(viper.GetString("rpc.tracing"))
 			if err != nil {
 				logrus.Error("bad rpc.tracing addresses")
 				return err
 			}
 
-			tracingBalancer, err := qlservices.NewBalancer(tracingClients)
-			if err != nil {
-				return err
-			}
-
 			router, err := mux.NewServeMux(&mux.Options{
 				BasePath:       viper.GetString("http.path"),
 				EnableGraphiQL: viper.GetBool("gql.gui"),
@@ -64,8 +53,8 @@ var (
 					TracingAPI: gqlTracingAPIAddr,
 				},
 				RPC: mux.RPCOptions{
-					DefaultBalancer: rpcBalancer,
-					TracingBalancer: tracingBalancer,
+					DefaultClients: rpcClients,
+					TracingClients: tracingClients,
 				},
 			})
 			if err != nil {

cmd/root.go

@@ -1,10 +1,11 @@
 package cmd
 
 import (
+	"strings"
+
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
-	"strings"
 )
 
 var (

go.sum

@@ -24,6 +24,7 @@ github.com/Azure/go-autorest/autorest/mocks v0.2.0/go.mod h1:OTyCOPRA2IgIlWxVYxB
 github.com/Azure/go-autorest/autorest/mocks v0.3.0/go.mod h1:a8FDP3DYzQ4RYfVAxAN3SVSiiO77gL2j2ronKKP0syM=
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+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
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@@ -34,6 +35,7 @@ github.com/VictoriaMetrics/fastcache v1.5.3 h1:2odJnXLbFZcoV9KYtQ+7TH1UOq3dn3Ass
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@@ -47,6 +49,7 @@ github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kB
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+github.com/cespare/cp v0.1.0 h1:SE+dxFebS7Iik5LK0tsi1k9ZCxEaFX4AjQmoyA+1dJk=
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@@ -88,8 +91,10 @@ github.com/gballet/go-libpcsclite v0.0.0-20190607065134-2772fd86a8ff h1:tY80oXqG
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@@ -121,6 +126,7 @@ github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OI
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+github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGaHF6qqu48+N2wcFQ5qg5FXgOdqsJ5d8=
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@@ -154,6 +160,7 @@ github.com/hashicorp/logutils v1.0.0/go.mod h1:QIAnNjmIWmVIIkWDTG1z5v++HQmx9WQRO
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@@ -168,6 +175,7 @@ github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af/go.mod h1:Nht
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@@ -176,9 +184,12 @@ github.com/karalabe/usb v0.0.0-20190919080040-51dc0efba356/go.mod h1:Od972xHfMJo
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@@ -215,7 +226,9 @@ github.com/olekukonko/tablewriter v0.0.1/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXW
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@@ -227,6 +240,7 @@ github.com/peterh/liner v1.1.1-0.20190123174540-a2c9a5303de7/go.mod h1:CRroGNssy
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@@ -255,7 +269,9 @@ github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeV
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@@ -283,6 +299,7 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
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@@ -418,8 +435,10 @@ google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiq
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@@ -428,6 +447,7 @@ gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce/go.mod h1:5AcXVHN
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 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/sourcemap.v1 v1.0.5/go.mod h1:2RlvNNSMglmRrcvhfuzp4hQHwOtjxlbjX7UPY/GXb78=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/urfave/cli.v1 v1.20.0 h1:NdAVW6RYxDif9DhDHaAortIu956m2c0v+09AZBPTbE0=
 gopkg.in/urfave/cli.v1 v1.20.0/go.mod h1:vuBzUtMdQeixQj8LVd+/98pzhxNGQoyuPBlsXHOQNO0=

pkg/mux/options.go

@@ -1,8 +1,9 @@
 package mux
 
 import (
-	"github.com/vulcanize/gap-filler/pkg/qlservices"
 	"net/url"
+
+	"github.com/ethereum/go-ethereum/rpc"
 )
 
 type PostgraphileOptions struct {
@@ -11,8 +12,8 @@ type PostgraphileOptions struct {
 }
 
 type RPCOptions struct {
-	DefaultBalancer qlservices.Balancer
-	TracingBalancer qlservices.Balancer
+	DefaultClients []*rpc.Client
+	TracingClients []*rpc.Client
 }
 
 // Options configurations for proxy service

pkg/mux/package.go

@@ -22,8 +22,8 @@ func NewServeMux(opts *Options) (*http.ServeMux, error) {
 
 	mux.Handle(path.Join(opts.BasePath, "/graphql"), proxy.New(&proxy.Options{
 		RPC: proxy.RPCOptions{
-			DefaultBalancer: opts.RPC.DefaultBalancer,
-			TracingBalancer: opts.RPC.TracingBalancer,
+			DefaultClients: opts.RPC.DefaultClients,
+			TracingClients: opts.RPC.TracingClients,
 		},
 		Postgraphile: proxy.PostgraphileOptions{
 			Default:    opts.Postgraphile.Default,

pkg/proxy/package.go

@@ -4,6 +4,8 @@ import (
 	"net/http"
 	"net/url"
 
+	"github.com/ethereum/go-ethereum/rpc"
+
 	"github.com/vulcanize/gap-filler/pkg/qlservices"
 )
 
@@ -19,8 +21,8 @@ type PostgraphileOptions struct {
 }
 
 type RPCOptions struct {
-	DefaultBalancer qlservices.Balancer
-	TracingBalancer qlservices.Balancer
+	DefaultClients []*rpc.Client
+	TracingClients []*rpc.Client
 }
 
 type Options struct {
@@ -33,8 +35,8 @@ func New(opts *Options) *Proxy {
 	return &Proxy{
 		wsProxy: NewWebsocketReverseProxy(opts.Postgraphile.Default),
 		httpProxy: NewHTTPReverseProxy(opts).
-			Register(qlservices.NewEthHeaderCidByBlockNumberService(opts.RPC.DefaultBalancer)).
-			Register(qlservices.NewGetGraphCallByTxHashService(opts.RPC.TracingBalancer)),
+			Register(qlservices.NewEthHeaderCidByBlockNumberService(opts.RPC.DefaultClients)).
+			Register(qlservices.NewGetGraphCallByTxHashService(opts.RPC.TracingClients)),
 	}
 }