logging: start_time and end_time are not required params

Signed-off-by: huanggze <loganhuang@yunify.com>

pkg/simple/client/logging/elasticsearch/api_body.go

@@ -119,14 +119,15 @@ func (bb *bodyBuilder) mainBool(sf logging.SearchFilter) *bodyBuilder {
 		ms = append(ms, Match{Bool: &b})
 	}
 
-	if !sf.Starttime.IsZero() || !sf.Endtime.IsZero() {
-		fromTo := Match{
-			Range: &Range{&Time{
-				Gte: &sf.Starttime,
-				Lte: &sf.Endtime,
-			}},
-		}
-		ms = append(ms, fromTo)
+	r := &Range{Time: &Time{}}
+	if !sf.Starttime.IsZero() {
+		r.Gte = &sf.Starttime
+	}
+	if !sf.Endtime.IsZero() {
+		r.Lte = &sf.Endtime
+	}
+	if r.Lte != nil || r.Gte != nil {
+		ms = append(ms, Match{Range: r})
 	}
 
 	bb.Body.Query = &Query{Bool{Filter: ms}}

pkg/simple/client/logging/elasticsearch/api_body_test.go

@@ -45,6 +45,12 @@ func TestMainBool(t *testing.T) {
 			},
 			expected: "api_body_4.json",
 		},
+		{
+			filter: logging.SearchFilter{
+				Starttime: time.Unix(1590744676, 0),
+			},
+			expected: "api_body_7.json",
+		},
 	}
 
 	for i, test := range tests {

pkg/simple/client/logging/elasticsearch/testdata/api_body_7.json

@@ -0,0 +1,15 @@
+{
+  "query":{
+    "bool":{
+      "filter":[
+        {
+          "range":{
+            "time":{
+              "gte":"2020-05-29T17:31:16+08:00"
+            }
+          }
+        }
+      ]
+    }
+  }
+}