add "daily" param in the volume filter string to allow future improvments with the same interface

Author: nikhilsaraf

examples/configs/trader/sample_trader.cfg

@@ -103,7 +103,7 @@ HORIZON_URL="https://horizon-testnet.stellar.org"
 #    #     - "ignore" indicates that the volume filter should not modify the values of any offer and the offer which will cause
 #    #        the capacity limit to be exceeded should be dropped or ignored. This will result in a less than or equal amount
 #    #        of the asset to be sold for the given day.
-#    "volume/sell/base/3500.0/exact",
+#    "volume/daily/sell/base/3500.0/exact",
 #
 #    # limit the amount of the base asset that is sold every day, denominated in units of the quote asset (needs POSTGRES_DB)
 #    # The fifth param can be either "exact" or "ignore" ("exact" is recommended):
@@ -113,7 +113,7 @@ HORIZON_URL="https://horizon-testnet.stellar.org"
 #    #     - "ignore" indicates that the volume filter should not modify the values of any offer and the offer which will cause
 #    #        the capacity limit to be exceeded should be dropped or ignored. This will result in a less than or equal amount
 #    #        of the asset to be sold for the given day.
-#    "volume/sell/quote/1000.0/ignore",
+#    "volume/daily/sell/quote/1000.0/ignore",
 #
 #    # limit offers based on a minimim price requirement
 #    "price/min/0.04",

plugins/filterFactory.go

@@ -44,25 +44,28 @@ func (f *FilterFactory) MakeFilter(configInput string) (SubmitFilter, error) {
 
 func filterVolume(f *FilterFactory, configInput string) (SubmitFilter, error) {
 	parts := strings.Split(configInput, "/")
-	if len(parts) != 5 {
-		return nil, fmt.Errorf("invalid input (%s), needs 5 parts separated by the delimiter (/)", configInput)
+	if len(parts) != 6 {
+		return nil, fmt.Errorf("invalid input (%s), needs 6 parts separated by the delimiter (/)", configInput)
 	}
 
-	mode, e := parseVolumeFilterMode(parts[4])
+	mode, e := parseVolumeFilterMode(parts[5])
 	if e != nil {
 		return nil, fmt.Errorf("could not parse volume filter mode from input (%s): %s", configInput, e)
 	}
 	config := &VolumeFilterConfig{mode: mode}
 	if parts[1] != "sell" {
 		return nil, fmt.Errorf("invalid input (%s), the second part needs to be \"sell\"", configInput)
 	}
-	limit, e := strconv.ParseFloat(parts[3], 64)
+	if parts[2] != "daily" {
+		return nil, fmt.Errorf("invalid input (%s), the third part needs to be \"daily\"", configInput)
+	}
+	limit, e := strconv.ParseFloat(parts[4], 64)
 	if e != nil {
 		return nil, fmt.Errorf("could not parse the fourth part as a float value from config value (%s): %s", configInput, e)
 	}
-	if parts[2] == "base" {
+	if parts[3] == "base" {
 		config.SellBaseAssetCapInBaseUnits = &limit
-	} else if parts[2] == "quote" {
+	} else if parts[3] == "quote" {
 		config.SellBaseAssetCapInQuoteUnits = &limit
 	} else {
 		return nil, fmt.Errorf("invalid input (%s), the third part needs to be \"base\" or \"quote\"", configInput)