cache location response

pkg/zos_api/location.go

@@ -3,9 +3,25 @@ package zosapi
 import (
 	"context"
 
+	"github.com/patrickmn/go-cache"
 	"github.com/threefoldtech/zos/pkg/geoip"
 )
 
+const (
+	locationCacheKey = "location"
+)
+
 func (g *ZosAPI) locationGet(ctx context.Context, payload []byte) (interface{}, error) {
-	return geoip.Fetch()
+	if loc, found := g.inMemCache.Get(locationCacheKey); found {
+		return loc, nil
+	}
+
+	loc, err := geoip.Fetch()
+	if err != nil {
+		return nil, err
+	}
+
+	g.inMemCache.Set(locationCacheKey, loc, cache.DefaultExpiration)
+
+	return loc, nil
 }

pkg/zos_api/zos_api.go

@@ -2,7 +2,9 @@ package zosapi
 
 import (
 	"fmt"
+	"time"
 
+	"github.com/patrickmn/go-cache"
 	substrate "github.com/threefoldtech/tfchain/clients/tfchain-client-go"
 	"github.com/threefoldtech/zbus"
 	"github.com/threefoldtech/zos/pkg/capacity"
@@ -11,6 +13,11 @@ import (
 	"github.com/threefoldtech/zos/pkg/stubs"
 )
 
+const (
+	cacheDefaultExpiration = 24 * time.Hour
+	cacheDefaultCleanup    = 24 * time.Hour
+)
+
 type ZosAPI struct {
 	oracle                 *capacity.ResourceOracle
 	versionMonitorStub     *stubs.VersionMonitorStub
@@ -22,6 +29,7 @@ type ZosAPI struct {
 	performanceMonitorStub *stubs.PerformanceMonitorStub
 	diagnosticsManager     *diagnostics.DiagnosticsManager
 	farmerID               uint32
+	inMemCache             *cache.Cache
 }
 
 func NewZosAPI(manager substrate.Manager, client zbus.Client, msgBrokerCon string) (ZosAPI, error) {
@@ -56,5 +64,6 @@ func NewZosAPI(manager substrate.Manager, client zbus.Client, msgBrokerCon strin
 		return ZosAPI{}, err
 	}
 	api.farmerID = uint32(farmer.ID)
+	api.inMemCache = cache.New(cacheDefaultExpiration, cacheDefaultCleanup)
 	return api, nil
 }