Update docs to reflect FFTM 1.1.6

Signed-off-by: Matthew Whitehead <matthew.whitehead@kaleido.io>

config.md

@@ -173,6 +173,41 @@
 |message|Configures the JSON key containing the log message|`string`|`message`
 |timestamp|Configures the JSON key containing the timestamp of the log|`string`|`@timestamp`
 
+## metrics
+
+|Key|Description|Type|Default Value|
+|---|-----------|----|-------------|
+|address|The IP address on which the metrics HTTP API should listen|`int`|`127.0.0.1`
+|enabled|Enables the metrics API|`boolean`|`false`
+|path|The path from which to serve the Prometheus metrics|`string`|`/metrics`
+|port|The port on which the metrics HTTP API should listen|`int`|`6000`
+|publicURL|The fully qualified public URL for the metrics API. This is used for building URLs in HTTP responses and in OpenAPI Spec generation|URL `string`|`<nil>`
+|readTimeout|The maximum time to wait when reading from an HTTP connection|[`time.Duration`](https://pkg.go.dev/time#Duration)|`15s`
+|shutdownTimeout|The maximum amount of time to wait for any open HTTP requests to finish before shutting down the HTTP server|[`time.Duration`](https://pkg.go.dev/time#Duration)|`10s`
+|writeTimeout|The maximum time to wait when writing to an HTTP connection|[`time.Duration`](https://pkg.go.dev/time#Duration)|`15s`
+
+## metrics.auth
+
+|Key|Description|Type|Default Value|
+|---|-----------|----|-------------|
+|type|The auth plugin to use for server side authentication of requests|`string`|`<nil>`
+
+## metrics.auth.basic
+
+|Key|Description|Type|Default Value|
+|---|-----------|----|-------------|
+|passwordfile|The path to a .htpasswd file to use for authenticating requests. Passwords should be hashed with bcrypt.|`string`|`<nil>`
+
+## metrics.tls
+
+|Key|Description|Type|Default Value|
+|---|-----------|----|-------------|
+|caFile|The path to the CA file for TLS on this API|`string`|`<nil>`
+|certFile|The path to the certificate file for TLS on this API|`string`|`<nil>`
+|clientAuth|Enables or disables client auth for TLS on this API|`string`|`<nil>`
+|enabled|Enables or disables TLS on this API|`boolean`|`false`
+|keyFile|The path to the private key file for TLS on this API|`string`|`<nil>`
+
 ## persistence
 
 |Key|Description|Type|Default Value|

internal/ethereum/get_address_balance.go

@@ -31,9 +31,9 @@ func (c *ethConnector) AddressBalance(ctx context.Context, req *ffcapi.AddressBa
 	if blockTag == "" {
 		blockTag = "latest"
 	}
-	err := c.backend.CallRPC(ctx, &addressBalance, "eth_getBalance", req.Address, blockTag)
-	if err != nil {
-		return nil, "", err.Error()
+	rpcErr := c.backend.CallRPC(ctx, &addressBalance, "eth_getBalance", req.Address, blockTag)
+	if rpcErr != nil {
+		return nil, "", rpcErr.Error()
 	}
 
 	return &ffcapi.AddressBalanceResponse{

internal/ethereum/get_address_balance_test.go

@@ -18,10 +18,10 @@ package ethereum
 
 import (
 	"encoding/json"
-	"fmt"
 	"testing"
 
 	"github.com/hyperledger/firefly-signer/pkg/ethtypes"
+	"github.com/hyperledger/firefly-signer/pkg/rpcbackend"
 	"github.com/hyperledger/firefly-transaction-manager/pkg/ffcapi"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/mock"
@@ -64,7 +64,7 @@ func TestGetAddressBalanceFail(t *testing.T) {
 	defer done()
 
 	mRPC.On("CallRPC", mock.Anything, mock.Anything, "eth_getBalance", "0x4a8c8f1717570f9774652075e249ded38124d708", "latest").
-		Return(fmt.Errorf("pop"))
+		Return(&rpcbackend.RPCError{Message: "pop"})
 
 	var req ffcapi.AddressBalanceRequest
 	err := json.Unmarshal([]byte(sampleGetBalance), &req)