#79 add get interface for polling data (#98)

* add get interface for polling data

* change header

* db modify

* fix update failed

* modify as comment

* modify as comment

* go checker

* add handler to test

* modify

* when header is empty don't record
diff --git a/deployments/db.js b/deployments/db.js
index 0c8acb2..a3304df 100644
--- a/deployments/db.js
+++ b/deployments/db.js
@@ -98,21 +98,20 @@
 } );
 
 db.createCollection( "polling_detail", {
+    capped: true,
+    max: 100,
     validator: { $jsonSchema: {
             bsonType: "object",
-            required: [ "id","params","session_id","url_path" ],
+            required: [ "id","session_id","domain","url_path" ],
             properties: {
                 id: {
                     bsonType: "string",
                 },
-                session_id: {
-                    bsonType: "string",
-                },
                 domain: {
                     bsonType: "string",
                 },
                 params: {
-                    bsonType: "string"
+                    bsonType: "object"
                 },
                 ip: {
                     bsonType: "string"
@@ -120,9 +119,6 @@
                 user_agent: {
                     bsonType: "string"
                 },
-                url_path: {
-                    bsonType: "string"
-                },
                 response_body: {
                     bsonType: "object"
                 },
@@ -130,7 +126,7 @@
                     bsonType: "object"
                 },
                 response_code: {
-                    bsonType: "string"
+                    bsonType: "number"
                 }
             }
         } }
@@ -142,7 +138,7 @@
 db.label.createIndex({"id": 1}, { unique: true } );
 db.label.createIndex({format: 1,domain:1,project:1},{ unique: true });
 db.polling_detail.createIndex({"id": 1}, { unique: true } );
-db.polling_detail.createIndex({session:1,domain:1}, { unique: true } );
+db.polling_detail.createIndex({session_id:1,domain:1}, { unique: true } );
 db.view.createIndex({"id": 1}, { unique: true } );
 db.view.createIndex({display:1,domain:1,project:1},{ unique: true });
 //db config
diff --git a/pkg/common/common.go b/pkg/common/common.go
index 191d627..06f1118 100644
--- a/pkg/common/common.go
+++ b/pkg/common/common.go
@@ -31,6 +31,11 @@
 	QueryParamStatus = "status"
 	QueryParamOffset = "offset"
 	QueryParamLimit  = "limit"
+	//polling data
+	QueryParamSessionID = "sessionId"
+	QueryParamIP        = "ip"
+	QueryParamURLPath   = "urlPath"
+	QueryParamUserAgent = "userAgent"
 )
 
 //http headers
diff --git a/pkg/model/db_schema.go b/pkg/model/db_schema.go
index 950e0cd..e786a85 100644
--- a/pkg/model/db_schema.go
+++ b/pkg/model/db_schema.go
@@ -55,3 +55,17 @@
 	Domain   string `json:"domain,omitempty" yaml:"domain,omitempty"`
 	Criteria string `json:"criteria,omitempty" yaml:"criteria,omitempty"`
 }
+
+//PollingDetail is db struct, it record operation history
+type PollingDetail struct {
+	ID             string                 `json:"id,omitempty" yaml:"id,omitempty"`
+	SessionID      string                 `json:"session_id,omitempty" bson:"session_id," yaml:"session_id,omitempty"`
+	Domain         string                 `json:"domain,omitempty" yaml:"domain,omitempty"`
+	PollingData    map[string]interface{} `json:"params,omitempty" yaml:"params,omitempty"`
+	IP             string                 `json:"ip,omitempty" yaml:"ip,omitempty"`
+	UserAgent      string                 `json:"user_agent,omitempty" bson:"user_agent," yaml:"user_agent,omitempty"`
+	URLPath        string                 `json:"url_path,omitempty"  bson:"url_path,"  yaml:"url_path,omitempty"`
+	ResponseBody   interface{}            `json:"response_body,omitempty"  bson:"response_body,"  yaml:"response_body,omitempty"`
+	ResponseHeader map[string][]string    `json:"response_header,omitempty"  bson:"response_header,"  yaml:"response_header,omitempty"`
+	ResponseCode   int                    `json:"response_code,omitempty"  bson:"response_code,"  yaml:"response_code,omitempty"`
+}
diff --git a/pkg/model/kv.go b/pkg/model/kv.go
index b002037..71d20cd 100644
--- a/pkg/model/kv.go
+++ b/pkg/model/kv.go
@@ -53,20 +53,6 @@
 	Data  []*ViewDoc `json:"data,omitempty"`
 }
 
-//PollingDetail record operation history
-type PollingDetail struct {
-	ID             string                 `json:"id,omitempty" yaml:"id,omitempty"`
-	SessionID      string                 `json:"session_id,omitempty" yaml:"session_id,omitempty"`
-	Domain         string                 `json:"domain,omitempty" yaml:"domain,omitempty"`
-	PollingData    map[string]interface{} `json:"params,omitempty" yaml:"params,omitempty"`
-	IP             string                 `json:"ip,omitempty" yaml:"ip,omitempty"`
-	UserAgent      string                 `json:"user_agent,omitempty" yaml:"user_agent,omitempty"`
-	URLPath        string                 `json:"url_path,omitempty" yaml:"url_path,omitempty"`
-	ResponseBody   interface{}            `json:"response_body,omitempty" yaml:"response_body,omitempty"`
-	ResponseHeader map[string][]string    `json:"response_header,omitempty" yaml:"response_header,omitempty"`
-	ResponseCode   int                    `json:"response_code,omitempty" yaml:"response_code,omitempty"`
-}
-
 //DocResponseSingleKey is response doc
 type DocResponseSingleKey struct {
 	CreateRevision int64             `json:"create_revision"`
@@ -87,6 +73,12 @@
 	Total int64                   `json:"total"`
 }
 
+//PollingDataResponse  is response doc
+type PollingDataResponse struct {
+	Data  []*PollingDetail `json:"data"`
+	Total int              `json:"total"`
+}
+
 //DocHealthCheck is response doc
 type DocHealthCheck struct {
 	Version   string `json:"version"`
diff --git a/server/handler/track_handler.go b/server/handler/track_handler.go
index f85df93..3d6979d 100644
--- a/server/handler/track_handler.go
+++ b/server/handler/track_handler.go
@@ -22,7 +22,7 @@
 	"github.com/apache/servicecomb-kie/pkg/iputil"
 	"github.com/apache/servicecomb-kie/pkg/model"
 	"github.com/apache/servicecomb-kie/server/resource/v1"
-	"github.com/apache/servicecomb-kie/server/service/mongo/record"
+	"github.com/apache/servicecomb-kie/server/service/mongo/track"
 	"github.com/emicklei/go-restful"
 	"github.com/go-chassis/go-chassis/core/handler"
 	"github.com/go-chassis/go-chassis/core/invocation"
@@ -60,14 +60,7 @@
 		return
 	}
 	chain.Next(inv, func(ir *invocation.Response) error {
-		resp, ok := ir.Result.(*restful.Response)
-		if !ok {
-			err := cb(ir)
-			if err != nil {
-				return err
-			}
-			return nil
-		}
+		resp, _ := ir.Result.(*restful.Response)
 		revStr := req.QueryParameter(common.QueryParamRev)
 		wait := req.QueryParameter(common.QueryParamWait)
 		data := &model.PollingDetail{}
@@ -78,14 +71,16 @@
 		data.IP = iputil.ClientIP(req.Request)
 		data.ResponseBody = inv.Ctx.Value(common.RespBodyContextKey)
 		data.ResponseCode = ir.Status
-		data.ResponseHeader = resp.Header()
+		if resp != nil {
+			data.ResponseHeader = resp.Header()
+		}
 		data.PollingData = map[string]interface{}{
 			"revStr":  revStr,
 			"wait":    wait,
 			"project": req.HeaderParameter(v1.PathParameterProject),
 			"labels":  req.QueryParameter("label"),
 		}
-		_, err := record.CreateOrUpdate(inv.Ctx, data)
+		_, err := track.CreateOrUpdate(inv.Ctx, data)
 		if err != nil {
 			openlogging.Warn("record polling detail failed" + err.Error())
 			err := cb(ir)
diff --git a/server/resource/v1/common.go b/server/resource/v1/common.go
index 957308f..2d48b79 100644
--- a/server/resource/v1/common.go
+++ b/server/resource/v1/common.go
@@ -40,7 +40,7 @@
 //const of server
 const (
 	HeaderUserAgent      = "User-Agent"
-	HeaderSessionID      = "sessionID"
+	HeaderSessionID      = "X-Session-Id"
 	PathParameterProject = "project"
 	PathParameterKey     = "key"
 	AttributeDomainKey   = "domain"
diff --git a/server/resource/v1/doc_struct.go b/server/resource/v1/doc_struct.go
index 5c3e35c..1a5aebb 100644
--- a/server/resource/v1/doc_struct.go
+++ b/server/resource/v1/doc_struct.go
@@ -101,6 +101,31 @@
 		ParamType: goRestful.QueryParameterKind,
 		Desc:      "pagination",
 	}
+	//polling data
+	DocQuerySessionIDParameters = &restful.Parameters{
+		DataType:  "string",
+		Name:      common.QueryParamSessionID,
+		ParamType: goRestful.QueryParameterKind,
+		Desc:      "sessionId is the Unique identification of the client",
+	}
+	DocQueryIPParameters = &restful.Parameters{
+		DataType:  "string",
+		Name:      common.QueryParamIP,
+		ParamType: goRestful.QueryParameterKind,
+		Desc:      "client ip",
+	}
+	DocQueryURLPathParameters = &restful.Parameters{
+		DataType:  "string",
+		Name:      common.QueryParamURLPath,
+		ParamType: goRestful.QueryParameterKind,
+		Desc:      "address of the call",
+	}
+	DocQueryUserAgentParameters = &restful.Parameters{
+		DataType:  "string",
+		Name:      common.QueryParamUserAgent,
+		ParamType: goRestful.QueryParameterKind,
+		Desc:      "user agent of the call",
+	}
 )
 
 //swagger doc path params
diff --git a/server/resource/v1/history_resource.go b/server/resource/v1/history_resource.go
index 32376c1..9b6269a 100644
--- a/server/resource/v1/history_resource.go
+++ b/server/resource/v1/history_resource.go
@@ -19,6 +19,7 @@
 
 import (
 	"github.com/apache/servicecomb-kie/pkg/model"
+	"github.com/apache/servicecomb-kie/server/service/mongo/track"
 	"github.com/go-chassis/go-chassis/pkg/runtime"
 	"net/http"
 	"strconv"
@@ -75,6 +76,49 @@
 	}
 }
 
+//GetPollingData get the record of the get or list history
+func (r *HistoryResource) GetPollingData(context *restful.Context) {
+	query := &model.PollingDetail{}
+	sessionID := context.ReadQueryParameter(common.QueryParamSessionID)
+	if sessionID != "" {
+		query.SessionID = sessionID
+	}
+	ip := context.ReadQueryParameter(common.QueryParamIP)
+	if ip != "" {
+		query.IP = ip
+	}
+	urlPath := context.ReadQueryParameter(common.QueryParamURLPath)
+	if urlPath != "" {
+		query.URLPath = urlPath
+	}
+	userAgent := context.ReadQueryParameter(common.QueryParamUserAgent)
+	if userAgent != "" {
+		query.UserAgent = userAgent
+	}
+	domain := ReadDomain(context)
+	if domain == nil {
+		WriteErrResponse(context, http.StatusInternalServerError, common.MsgDomainMustNotBeEmpty, common.ContentTypeText)
+		return
+	}
+	query.Domain = domain.(string)
+	records, err := track.Get(context.Ctx, query)
+	if err != nil {
+		if err == service.ErrRecordNotExists {
+			WriteErrResponse(context, http.StatusNotFound, err.Error(), common.ContentTypeText)
+			return
+		}
+		WriteErrResponse(context, http.StatusInternalServerError, err.Error(), common.ContentTypeText)
+		return
+	}
+	resp := &model.PollingDataResponse{}
+	resp.Data = records
+	resp.Total = len(records)
+	err = writeResponse(context, resp)
+	if err != nil {
+		openlogging.Error(err.Error())
+	}
+}
+
 //HealthCheck provider version info and time info
 func (r *HistoryResource) HealthCheck(context *restful.Context) {
 	domain := ReadDomain(context)
@@ -128,5 +172,23 @@
 			Consumes: []string{goRestful.MIME_JSON, common.ContentTypeYaml},
 			Produces: []string{goRestful.MIME_JSON, common.ContentTypeYaml},
 		},
+		{
+			Method:       http.MethodGet,
+			Path:         "/v1/{project}/kie/track",
+			ResourceFunc: r.GetPollingData,
+			FuncDesc:     "get polling tracks of clients of kie server",
+			Parameters: []*restful.Parameters{
+				DocPathProject, DocQuerySessionIDParameters, DocQueryIPParameters, DocQueryURLPathParameters, DocQueryUserAgentParameters,
+			},
+			Returns: []*restful.Returns{
+				{
+					Code:    http.StatusOK,
+					Message: "true",
+					Model:   []model.PollingDataResponse{},
+				},
+			},
+			Consumes: []string{goRestful.MIME_JSON, common.ContentTypeYaml},
+			Produces: []string{goRestful.MIME_JSON, common.ContentTypeYaml},
+		},
 	}
 }
diff --git a/server/resource/v1/history_resource_test.go b/server/resource/v1/history_resource_test.go
index 2a05a56..e7f9ed8 100644
--- a/server/resource/v1/history_resource_test.go
+++ b/server/resource/v1/history_resource_test.go
@@ -85,6 +85,45 @@
 
 }
 
+func TestHistoryResource_GetPollingData(t *testing.T) {
+	t.Run("list kv by service label, to create a polling data", func(t *testing.T) {
+		r, _ := http.NewRequest("GET", "/v1/test/kie/kv", nil)
+		noopH := &handler2.NoopAuthHandler{}
+		noopH2 := &handler2.TrackHandler{}
+		chain, _ := handler.CreateChain(common.Provider, "testchain3", noopH.Name(), noopH2.Name())
+		r.Header.Set("Content-Type", "application/json")
+		r.Header.Set("X-Session-Id", "test")
+		kvr := &v1.KVResource{}
+		c, err := restfultest.New(kvr, chain)
+		assert.NoError(t, err)
+		resp := httptest.NewRecorder()
+		c.ServeHTTP(resp, r)
+		body, err := ioutil.ReadAll(resp.Body)
+		assert.NoError(t, err)
+		result := &model.KVResponse{}
+		err = json.Unmarshal(body, result)
+		assert.NoError(t, err)
+	})
+	t.Run("get polling data", func(t *testing.T) {
+		r, _ := http.NewRequest("GET", "/v1/test/kie/track?sessionId=test", nil)
+		noopH := &handler2.NoopAuthHandler{}
+		chain, _ := handler.CreateChain(common.Provider, "testchain3", noopH.Name())
+		r.Header.Set("Content-Type", "application/json")
+		revision := &v1.HistoryResource{}
+		c, err := restfultest.New(revision, chain)
+		assert.NoError(t, err)
+		resp := httptest.NewRecorder()
+		c.ServeHTTP(resp, r)
+		body, err := ioutil.ReadAll(resp.Body)
+		assert.NoError(t, err)
+		result := &model.PollingDataResponse{}
+		err = json.Unmarshal(body, result)
+		assert.NoError(t, err)
+		assert.NotEmpty(t, result.Data)
+	})
+
+}
+
 func Test_HeathCheck(t *testing.T) {
 	path := fmt.Sprintf("/v1/health")
 	r, _ := http.NewRequest("GET", path, nil)
diff --git a/server/resource/v1/kv_resource_test.go b/server/resource/v1/kv_resource_test.go
index 35aa46f..e0450d7 100644
--- a/server/resource/v1/kv_resource_test.go
+++ b/server/resource/v1/kv_resource_test.go
@@ -76,7 +76,6 @@
 		noopH := &handler2.NoopAuthHandler{}
 		chain, _ := handler.CreateChain(common.Provider, "testchain1", noopH.Name())
 		r.Header.Set("Content-Type", "application/json")
-		r.Header.Set("sessionID", "test")
 		kvr := &v1.KVResource{}
 		c, _ := restfultest.New(kvr, chain)
 		resp := httptest.NewRecorder()
@@ -101,7 +100,6 @@
 		noopH := &handler2.NoopAuthHandler{}
 		chain, _ := handler.CreateChain(common.Provider, "testchain1", noopH.Name())
 		r.Header.Set("Content-Type", "application/json")
-		r.Header.Set("sessionID", "test")
 		kvr := &v1.KVResource{}
 		c, _ := restfultest.New(kvr, chain)
 		resp := httptest.NewRecorder()
@@ -127,7 +125,6 @@
 		noopH := &handler2.NoopAuthHandler{}
 		chain, _ := handler.CreateChain(common.Provider, "testchain1", noopH.Name())
 		r.Header.Set("Content-Type", "application/json")
-		r.Header.Set("sessionID", "test")
 		kvr := &v1.KVResource{}
 		c, _ := restfultest.New(kvr, chain)
 		resp := httptest.NewRecorder()
diff --git a/server/service/mongo/record/polling_detail_dao.go b/server/service/mongo/record/polling_detail_dao.go
deleted file mode 100644
index 6cefe5c..0000000
--- a/server/service/mongo/record/polling_detail_dao.go
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package record
-
-import (
-	"context"
-	"github.com/apache/servicecomb-kie/pkg/model"
-	"github.com/apache/servicecomb-kie/server/service/mongo/session"
-	uuid "github.com/satori/go.uuid"
-	"go.mongodb.org/mongo-driver/bson"
-	"go.mongodb.org/mongo-driver/mongo"
-)
-
-//CreateOrUpdate create a record or update exist record
-func CreateOrUpdate(ctx context.Context, detail *model.PollingDetail) (*model.PollingDetail, error) {
-	collection := session.GetDB().Collection(session.CollectionPollingDetail)
-	queryFilter := bson.M{"domain": detail.Domain, "session_id": detail.SessionID}
-	res := collection.FindOne(ctx, queryFilter)
-	if res.Err() != nil {
-		if res.Err() == mongo.ErrNoDocuments {
-			detail.ID = uuid.NewV4().String()
-			_, err := collection.InsertOne(ctx, detail)
-			if err != nil {
-				return nil, err
-			}
-			return detail, nil
-		}
-		return nil, res.Err()
-	}
-	_, err := collection.UpdateOne(ctx, queryFilter, detail)
-	if err != nil {
-		return nil, err
-	}
-	return detail, nil
-}
diff --git a/server/service/mongo/track/polling_detail_dao.go b/server/service/mongo/track/polling_detail_dao.go
new file mode 100644
index 0000000..998931d
--- /dev/null
+++ b/server/service/mongo/track/polling_detail_dao.go
@@ -0,0 +1,92 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package track
+
+import (
+	"context"
+	"github.com/apache/servicecomb-kie/pkg/model"
+	"github.com/apache/servicecomb-kie/server/service"
+	"github.com/apache/servicecomb-kie/server/service/mongo/session"
+	"github.com/go-mesh/openlogging"
+	uuid "github.com/satori/go.uuid"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo"
+)
+
+//CreateOrUpdate create a record or update exist record
+func CreateOrUpdate(ctx context.Context, detail *model.PollingDetail) (*model.PollingDetail, error) {
+	collection := session.GetDB().Collection(session.CollectionPollingDetail)
+	queryFilter := bson.M{"domain": detail.Domain, "session_id": detail.SessionID}
+	res := collection.FindOne(ctx, queryFilter)
+	if res.Err() != nil {
+		if res.Err() == mongo.ErrNoDocuments {
+			detail.ID = uuid.NewV4().String()
+			_, err := collection.InsertOne(ctx, detail)
+			if err != nil {
+				return nil, err
+			}
+			return detail, nil
+		}
+		return nil, res.Err()
+	}
+	_, err := collection.UpdateOne(ctx, queryFilter, bson.D{{"$set", detail}})
+	if err != nil {
+		return nil, err
+	}
+	return detail, nil
+}
+
+//Get is to get a
+func Get(ctx context.Context, detail *model.PollingDetail) ([]*model.PollingDetail, error) {
+	collection := session.GetDB().Collection(session.CollectionPollingDetail)
+	queryFilter := bson.M{"domain": detail.Domain}
+	if detail.SessionID != "" {
+		queryFilter["session_id"] = detail.SessionID
+	}
+	if detail.IP != "" {
+		queryFilter["ip"] = detail.IP
+	}
+	if detail.UserAgent != "" {
+		queryFilter["user_agent"] = detail.UserAgent
+	}
+	if detail.URLPath != "" {
+		queryFilter["url_path"] = detail.URLPath
+	}
+	cur, err := collection.Find(ctx, queryFilter)
+	if err != nil {
+		return nil, err
+	}
+	defer cur.Close(ctx)
+	if cur.Err() != nil {
+		return nil, err
+	}
+	records := make([]*model.PollingDetail, 0)
+	for cur.Next(ctx) {
+		curRecord := &model.PollingDetail{}
+		if err := cur.Decode(curRecord); err != nil {
+			openlogging.Error("decode to KVs error: " + err.Error())
+			return nil, err
+		}
+		curRecord.Domain = ""
+		records = append(records, curRecord)
+	}
+	if len(records) == 0 {
+		return nil, service.ErrRecordNotExists
+	}
+	return records, nil
+}
diff --git a/server/service/service.go b/server/service/service.go
index c1451d5..5720a6c 100644
--- a/server/service/service.go
+++ b/server/service/service.go
@@ -35,6 +35,7 @@
 //db errors
 var (
 	ErrKeyNotExists     = errors.New("can not find any key value")
+	ErrRecordNotExists  = errors.New("can not find any polling data")
 	ErrRevisionNotExist = errors.New("revision does not exist")
 	ErrAliasNotGiven    = errors.New("label alias not given")
 )