// ListOne handles the listing of one specific profile based on its given id
func ListOne(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START

	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	charset := "utf-8"

	//STANDARD DECLARATIONS END

	// Set Content-Type response Header value
	contentType := r.Header.Get("Accept")
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	vars := mux.Vars(r)

	// Grab Tenant DB configuration from context
	tenantDbConfig := context.Get(r, "tenant_conf").(config.MongoConfig)

	// Open session to tenant database
	session, err := mongo.OpenSession(tenantDbConfig)
	defer mongo.CloseSession(session)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	filter := bson.M{"id": vars["ID"]}

	// Retrieve Results from database
	results := []MongoInterface{}
	err = mongo.Find(session, tenantDbConfig.Db, "metric_profiles", filter, "name", &results)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// Check if nothing found
	if len(results) < 1 {
		output, _ = respond.MarshalContent(respond.NotFound, contentType, "", " ")
		code = 404
		return code, h, output, err
	}

	// Create view of the results
	output, err = createListView(results, "Success", code) //Render the results into JSON

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
	return code, h, output, err
}

// List the existing metric profiles for the tenant making the request
// Also there is an optional url param "name" to filter results by
func List(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START

	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	charset := "utf-8"

	//STANDARD DECLARATIONS END

	// Set Content-Type response Header value
	contentType := r.Header.Get("Accept")
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	urlValues := r.URL.Query()

	// Grab Tenant DB configuration from context
	tenantDbConfig := context.Get(r, "tenant_conf").(config.MongoConfig)

	// Open session to tenant database
	session, err := mongo.OpenSession(tenantDbConfig)
	defer mongo.CloseSession(session)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// Retrieve Results from database

	var filter interface{}
	if len(urlValues["name"]) > 0 {
		filter = bson.M{"name": urlValues["name"][0]}
	} else {
		filter = nil
	}

	results := []MongoInterface{}
	err = mongo.Find(session, tenantDbConfig.Db, "metric_profiles", filter, "name", &results)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// Create view of the results
	output, err = createListView(results, "Success", code) //Render the results into JSON

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
	return code, h, output, err
}

// List existing recomputations
func List(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {
	//STANDARD DECLARATIONS START
	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	// contentType := "application/json"
	charset := "utf-8"
	//STANDARD DECLARATIONS END

	urlValues := r.URL.Query()
	contentType := r.Header.Get("Accept")

	contentType, err = respond.ParseAcceptHeader(r)
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	if err != nil {
		code = http.StatusNotAcceptable
		output, _ = respond.MarshalContent(respond.NotAcceptableContentType, contentType, "", " ")
		return code, h, output, err
	}

	tenantDbConfig, err := authentication.AuthenticateTenant(r.Header, cfg)

	if err != nil {
		output, _ = respond.MarshalContent(respond.UnauthorizedMessage, contentType, "", " ")
		code = http.StatusUnauthorized //If wrong api key is passed we return UNAUTHORIZED http status
		return code, h, output, err
	}

	filter := IncomingRecomputation{
		StartTime: urlValues.Get("start_time"),
		EndTime:   urlValues.Get("end_time"),
		Reason:    urlValues.Get("reason"),
		Report:    urlValues.Get("report"),
	}

	session, err := mongo.OpenSession(tenantDbConfig)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	results := []MongoInterface{}
	err = mongo.Find(session, tenantDbConfig.Db, recomputationsColl, filter, "timestamp", &results)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	output, err = createListView(results, contentType)

	return code, h, output, err

}

// List returns a list of factors (weights) per endpoint group (i.e. site)
func List(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START

	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	contentType := "text/xml"
	charset := "utf-8"

	//STANDARD DECLARATIONS END

	contentType, err = respond.ParseAcceptHeader(r)
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	if err != nil {
		code = http.StatusNotAcceptable
		output, _ = respond.MarshalContent(respond.NotAcceptableContentType, contentType, "", " ")
		return code, h, output, err
	}

	tenantDbConfig, err := authentication.AuthenticateTenant(r.Header, cfg)

	if err != nil {
		output = []byte(http.StatusText(http.StatusUnauthorized))
		code = http.StatusUnauthorized //If wrong api key is passed we return UNAUTHORIZED http status
		h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
		return code, h, output, err
	}

	session, err := mongo.OpenSession(tenantDbConfig)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}
	defer mongo.CloseSession(session)

	results := []FactorsOutput{}
	err = mongo.Find(session, tenantDbConfig.Db, "weights", nil, "name", &results)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	output, err = createView(results, contentType) //Render the results into XML format

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	mongo.CloseSession(session)
	return code, h, output, err
}

// List function that implements the http GET request that retrieves
// all avaiable report information
func List(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START
	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	charset := "utf-8"
	//STANDARD DECLARATIONS END

	urlValues := r.URL.Query()

	// Set Content-Type response Header value
	contentType := r.Header.Get("Accept")
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	// Grab Tenant DB configuration from context
	tenantDbConfig := context.Get(r, "tenant_conf").(config.MongoConfig)

	// Try to open the mongo session
	session, err := mongo.OpenSession(cfg.MongoDB)
	defer session.Close()

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	query := bson.M{}

	if urlValues.Get("name") != "" {
		query["info.name"] = urlValues["name"]
	}

	// Create structure for storing query results
	results := []MongoInterface{}
	// Query tenant collection for all available documents.
	// nil query param == match everything
	err = mongo.Find(session, tenantDbConfig.Db, reportsColl, nil, "id", &results)
	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// After successfully retrieving the db results
	// call the createView function to render them into idented xml
	output, err = createView(results, contentType)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
	return code, h, output, err
}

func List(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START

	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	contentType := "text/xml"
	charset := "utf-8"

	//STANDARD DECLARATIONS END

	//Read the search values
	urlValues := r.URL.Query()

	//Searchig is based on name and namespace
	input := AvailabilityProfileSearch{
		urlValues["name"],
		urlValues["namespace"],
	}

	results := []AvailabilityProfileOutput{}
	session, err := mongo.OpenSession(cfg)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	query := readOne(input)

	if len(input.Name) == 0 {
		query = nil //If no name and namespace is provided then we have to retrieve all profiles thus we send nil into db query
	}

	err = mongo.Find(session, cfg.MongoDB.Db, "aps", query, "_id", &results)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	mongo.CloseSession(session)

	output, err = createView(results) //Render the results into XML format

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
	return code, h, output, err
}

// List returns a list of factors (weights) per endpoint group (i.e. site)
func List(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START

	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	contentType := "text/xml"
	charset := "utf-8"

	//STANDARD DECLARATIONS END

	contentType, err = respond.ParseAcceptHeader(r)
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	if err != nil {
		code = http.StatusNotAcceptable
		output, _ = respond.MarshalContent(respond.NotAcceptableContentType, contentType, "", " ")
		return code, h, output, err
	}

	// Grab Tenant DB configuration from context
	tenantDbConfig := context.Get(r, "tenant_conf").(config.MongoConfig)

	session, err := mongo.OpenSession(tenantDbConfig)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}
	defer mongo.CloseSession(session)

	results := []FactorsOutput{}
	err = mongo.Find(session, tenantDbConfig.Db, "weights", nil, "name", &results)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	output, err = createView(results, contentType) //Render the results into XML format

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	mongo.CloseSession(session)
	return code, h, output, err
}

// validateID validates the metric profile id
func (mp *MetricProfile) validateID(session *mgo.Session, db string, col string) error {
	var results []MetricProfile
	filter := bson.M{"id": mp.ID}
	err := mongo.Find(session, db, "metric_profiles", filter, "name", &results)
	if err != nil {
		return err
	}

	if len(results) > 0 {
		mp.Name = results[0].Name
		return nil
	}

	err = errors.New("Cannot validate")
	return err
}

// List existing recomputations
func List(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {
	//STANDARD DECLARATIONS START
	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	charset := "utf-8"
	//STANDARD DECLARATIONS END

	// Set Content-Type response Header value
	contentType := r.Header.Get("Accept")
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	urlValues := r.URL.Query()

	// Grab Tenant DB configuration from context
	tenantDbConfig := context.Get(r, "tenant_conf").(config.MongoConfig)

	filter := IncomingRecomputation{
		StartTime: urlValues.Get("start_time"),
		EndTime:   urlValues.Get("end_time"),
		Reason:    urlValues.Get("reason"),
		Report:    urlValues.Get("report"),
	}

	session, err := mongo.OpenSession(tenantDbConfig)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	results := []MongoInterface{}
	err = mongo.Find(session, tenantDbConfig.Db, recomputationsColl, filter, "timestamp", &results)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	output, err = createListView(results, contentType)

	return code, h, output, err

}

func List(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START

	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	contentType := "text/xml"
	charset := "utf-8"

	//STANDARD DECLARATIONS END

	session, err := mongo.OpenSession(cfg)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	results := []FactorsOutput{}
	err = mongo.Find(session, "AR", "hepspec", nil, "p", &results)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	output, err = createView(results) //Render the results into XML format

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	mongo.CloseSession(session)
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
	return code, h, output, err
}

// ListOne handles the listing of one specific profile based on its given id
func ListOne(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START

	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	contentType := "text/xml"
	charset := "utf-8"

	//STANDARD DECLARATIONS END

	// Content Negotiation
	contentType, err = respond.ParseAcceptHeader(r)
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	vars := mux.Vars(r)

	if err != nil {
		code = http.StatusNotAcceptable
		output, _ = respond.MarshalContent(respond.NotAcceptableContentType, contentType, "", " ")
		return code, h, output, err
	}

	// Tenant Authentication
	tenantDbConfig, err := authentication.AuthenticateTenant(r.Header, cfg)

	if err != nil {
		output, _ = respond.MarshalContent(respond.UnauthorizedMessage, contentType, "", " ")
		code = http.StatusUnauthorized //If wrong api key is passed we return UNAUTHORIZED http status
		return code, h, output, err
	}

	// Open session to tenant database
	session, err := mongo.OpenSession(tenantDbConfig)
	defer mongo.CloseSession(session)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	filter := bson.M{"id": vars["ID"]}

	// Retrieve Results from database
	results := []OpsProfile{}
	err = mongo.Find(session, tenantDbConfig.Db, "operations_profiles", filter, "name", &results)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// Check if nothing found
	if len(results) < 1 {
		output, _ = respond.MarshalContent(respond.NotFound, contentType, "", " ")
		code = 404
		return code, h, output, err
	}

	// Create view of the results
	output, err = createListView(results, "Success", code) //Render the results into JSON

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
	return code, h, output, err
}

func (suite *RecomputationsProfileTestSuite) TestSubmitRecomputations() {
	submission := IncomingRecomputation{
		StartTime: "2015-01-10T12:00:00Z",
		EndTime:   "2015-01-30T23:00:00Z",
		Reason:    "Ups failure",
		Report:    "EGI_Critical",
		Exclude:   []string{"SITE5", "SITE8"},
	}
	jsonsubmission, _ := json.Marshal(submission)

	request, _ := http.NewRequest("POST", "https://argo-web-api.grnet.gr:443/api/v2/recomputations", bytes.NewBuffer(jsonsubmission))
	request.Header.Set("x-api-key", suite.clientkey)
	request.Header.Set("Accept", "application/json")
	response := httptest.NewRecorder()

	suite.router.ServeHTTP(response, request)

	code := response.Code
	output := response.Body.String()

	recomputationRequestsJSON := `{
 "status": {
  "message": "Recomputations successfully created",
  "code": "201"
 },
 "data": {
  "id": ".+",
  "links": {
   "self": "https://argo-web-api.grnet.gr:443/api/v2/recomputations/.+"
  }
 }
}`
	// Check that we must have a 200 ok code
	suite.Equal(202, code, "Internal Server Error")
	// Compare the expected and actual xml response
	suite.Regexp(recomputationRequestsJSON, output, "Response body mismatch")

	dbDumpJson := `\[
 \{
  "id": "6ac7d684-1f8e-4a02-a502-720e8f11e50a",
  "requester_name": "Arya Stark",
  "requester_email": "[email protected]",
  "reason": "power cuts",
  "start_time": "2015-01-10T12:00:00Z",
  "end_time": "2015-01-30T23:00:00Z",
  "report": "EGI_Critical",
  "exclude": \[
   "SITE2",
   "SITE4"
  \],
  "status": "running",
  "timestamp": "2015-02-01 14:58:40"
 \},
 \{
  "id": "6ac7d684-1f8e-4a02-a502-720e8f11e50b",
  "requester_name": "John Snow",
  "requester_email": "[email protected]",
  "reason": "reasons",
  "start_time": "2015-03-10T12:00:00Z",
  "end_time": "2015-03-30T23:00:00Z",
  "report": "EGI_Critical",
  "exclude": \[
   "SITE1",
   "SITE3"
  \],
  "status": "pending",
  "timestamp": "2015-04-01 14:58:40"
 \},
 \{
  "id": ".+-.+-.+-.+-.+",
  "requester_name": "Joe Complex",
  "requester_email": "[email protected]",
  "reason": "Ups failure",
  "start_time": "2015-01-10T12:00:00Z",
  "end_time": "2015-01-30T23:00:00Z",
  "report": "EGI_Critical",
  "exclude": \[
   "SITE5",
   "SITE8"
  \],
  "status": "pending",
  "timestamp": ".*"
 \}
\]`

	session, _ := mongo.OpenSession(suite.tenantDbConf)
	defer mongo.CloseSession(session)
	var results []MongoInterface
	mongo.Find(session, suite.tenantDbConf.Db, recomputationsColl, nil, "timestamp", &results)
	json, _ := json.MarshalIndent(results, "", " ")
	suite.Regexp(dbDumpJson, string(json), "Database contents were not expected")

}

func Create(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START

	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	contentType := "text/xml"
	charset := "utf-8"

	//STANDARD DECLARATIONS END

	message := ""

	//Authentication procedure
	if authentication.Authenticate(r.Header, cfg) {

		session, err := mongo.OpenSession(cfg)

		if err != nil {
			code = http.StatusInternalServerError
			return code, h, output, err
		}

		name := []string{}
		namespace := []string{}

		//Reading the json input
		reqBody, err := ioutil.ReadAll(r.Body)

		input := AvailabilityProfileInput{}
		results := []AvailabilityProfileOutput{}
		//Unmarshalling the json input into byte form
		err = json.Unmarshal(reqBody, &input)

		if err != nil {
			if err != nil {
				message = "Malformated json input data" // User provided malformed json input data
				output, err := messageXML(message)

				if err != nil {
					code = http.StatusInternalServerError
					return code, h, output, err
				}

				code = http.StatusBadRequest
				h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
				return code, h, output, err
			}
		}

		//Making sure that no profile with the requested name and namespace combination already exists in the DB
		name = append(name, input.Name)
		namespace = append(namespace, input.Namespace)

		search := AvailabilityProfileSearch{
			name,
			namespace,
		}

		query := readOne(search)
		err = mongo.Find(session, cfg.MongoDB.Db, "aps", query, "name", &results)

		if err != nil {
			code = http.StatusInternalServerError
			return code, h, output, err
		}

		if len(results) <= 0 {
			//If name-namespace combination is unique we insert the new record into mongo
			query := createOne(input)
			err = mongo.Insert(session, cfg.MongoDB.Db, "aps", query)

			if err != nil {
				code = http.StatusInternalServerError
				return code, h, output, err
			}

			mongo.CloseSession(session)

			//Providing with the appropriate user response
			message = "Availability Profile record successfully created"
			output, err := messageXML(message) //Render the response into XML

			if err != nil {
				code = http.StatusInternalServerError
				return code, h, output, err
			}

			h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
			return code, h, output, err

		} else {
			message = "An availability profile with that name already exists"
			output, err := messageXML(message) //Render the response into XML

			if err != nil {
				code = http.StatusInternalServerError
				return code, h, output, err
//.........这里部分代码省略.........

// List the existing metric profiles for the tenant making the request
// Also there is an optional url param "name" to filter results by
func List(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START

	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	contentType := "text/xml"
	charset := "utf-8"

	//STANDARD DECLARATIONS END

	// Content Negotiation
	contentType, err = respond.ParseAcceptHeader(r)
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	if err != nil {
		code = http.StatusNotAcceptable
		output, _ = respond.MarshalContent(respond.NotAcceptableContentType, contentType, "", " ")
		return code, h, output, err
	}

	urlValues := r.URL.Query()

	// Tenant Authentication
	tenantDbConfig, err := authentication.AuthenticateTenant(r.Header, cfg)

	if err != nil {
		output, _ = respond.MarshalContent(respond.UnauthorizedMessage, contentType, "", " ")
		code = http.StatusUnauthorized //If wrong api key is passed we return UNAUTHORIZED http status
		return code, h, output, err
	}

	// Open session to tenant database
	session, err := mongo.OpenSession(tenantDbConfig)
	defer mongo.CloseSession(session)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// Retrieve Results from database

	var filter interface{}
	if len(urlValues["name"]) > 0 {
		filter = bson.M{"name": urlValues["name"][0]}
	} else {
		filter = nil
	}

	results := []MongoInterface{}
	err = mongo.Find(session, tenantDbConfig.Db, "metric_profiles", filter, "name", &results)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// Create view of the results
	output, err = createListView(results, "Success", code) //Render the results into JSON

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
	return code, h, output, err
}

// Create function is used to implement the create report request.
// The request is an http POST request with the report description
// provided as json structure in the request body
func Create(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START
	code := http.StatusCreated
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	charset := "utf-8"
	//STANDARD DECLARATIONS END

	// Set Content-Type response Header value
	contentType := r.Header.Get("Accept")
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	// Grab Tenant DB configuration from context
	tenantDbConfig := context.Get(r, "tenant_conf").(config.MongoConfig)

	//Reading the json input from the request body
	reqBody, err := ioutil.ReadAll(io.LimitReader(r.Body, cfg.Server.ReqSizeLimit))

	if err != nil {
		return code, h, output, err
	}
	input := MongoInterface{}
	//Unmarshalling the json input into byte form

	err = json.Unmarshal(reqBody, &input)

	// Check if json body is malformed
	if err != nil {
		output, _ := respond.MarshalContent(respond.MalformedJSONInput, contentType, "", " ")
		code = http.StatusBadRequest
		h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
		return code, h, output, err
	}

	// Try to open the mongo session
	session, err := mongo.OpenSession(tenantDbConfig)
	defer session.Close()

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// Validate profiles given in report
	validationErrors := input.ValidateProfiles(session.DB(tenantDbConfig.Db))

	if len(validationErrors) > 0 {
		code = 422
		out := respond.UnprocessableEntity
		out.Errors = validationErrors
		output = out.MarshalTo(contentType)
		return code, h, output, err
	}

	// Prepare structure for storing query results
	results := []MongoInterface{}

	// Check if report with the same name exists in datastore
	query := searchName(input.Info.Name)
	err = mongo.Find(session, tenantDbConfig.Db, reportsColl, query, "name", &results)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// If results are returned for the specific name
	// then we already have an existing report and we must
	// abort creation notifing the user
	if len(results) > 0 {
		// Name was found so print the error message in xml
		out := respond.ResponseMessage{
			Status: respond.StatusResponse{
				Message: "Report with the same name already exists",
				Code:    strconv.Itoa(http.StatusConflict),
			}}

		output, _ = respond.MarshalContent(out, contentType, "", " ")

		code = http.StatusConflict
		h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
		return code, h, output, err

	}
	input.Info.Created = time.Now().Format("2006-01-02 15:04:05")
	input.Info.Updated = input.Info.Created
	input.ID = mongo.NewUUID()
	// If no report exists with this name create a new one

	err = mongo.Insert(session, tenantDbConfig.Db, reportsColl, input)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}
//.........这里部分代码省略.........

//Update function to update contents of an existing metric profile
func Update(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {
	//STANDARD DECLARATIONS START
	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	charset := "utf-8"
	//STANDARD DECLARATIONS END

	vars := mux.Vars(r)

	// Set Content-Type response Header value
	contentType := r.Header.Get("Accept")
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	// Grab Tenant DB configuration from context
	tenantDbConfig := context.Get(r, "tenant_conf").(config.MongoConfig)

	incoming := MongoInterface{}

	// ingest body data
	body, err := ioutil.ReadAll(io.LimitReader(r.Body, cfg.Server.ReqSizeLimit))
	if err != nil {
		panic(err)
	}
	if err := r.Body.Close(); err != nil {
		panic(err)
	}
	// parse body json
	if err := json.Unmarshal(body, &incoming); err != nil {
		output, _ = respond.MarshalContent(respond.BadRequestBadJSON, contentType, "", " ")
		code = 400
		return code, h, output, err
	}

	session, err := mongo.OpenSession(tenantDbConfig)
	defer mongo.CloseSession(session)
	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}
	// create filter to retrieve specific profile with id
	filter := bson.M{"id": vars["ID"]}

	incoming.ID = vars["ID"]

	// Retrieve Results from database
	results := []MongoInterface{}
	err = mongo.Find(session, tenantDbConfig.Db, "metric_profiles", filter, "name", &results)

	if err != nil {
		panic(err)
	}

	// Check if nothing found
	if len(results) < 1 {
		output, _ = respond.MarshalContent(respond.NotFound, contentType, "", " ")
		code = 404
		return code, h, output, err
	}

	// run the update query
	err = mongo.Update(session, tenantDbConfig.Db, "metric_profiles", filter, incoming)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// Create view for response message
	output, err = createMsgView("Metric Profile successfully updated", 200) //Render the results into JSON
	code = 200
	return code, h, output, err
}

//Update function to update contents of an existing metric profile
func Update(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {
	//STANDARD DECLARATIONS START
	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	charset := "utf-8"
	//STANDARD DECLARATIONS END

	vars := mux.Vars(r)

	contentType, err := respond.ParseAcceptHeader(r)
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	if err != nil {
		code = http.StatusNotAcceptable
		output, _ = respond.MarshalContent(respond.NotAcceptableContentType, contentType, "", " ")
		return code, h, output, err
	}

	tenantDbConfig, err := authentication.AuthenticateTenant(r.Header, cfg)

	if err != nil {
		output, _ = respond.MarshalContent(respond.UnauthorizedMessage, contentType, "", " ")
		code = http.StatusUnauthorized //If wrong api key is passed we return UNAUTHORIZED http status
		return code, h, output, err
	}

	incoming := OpsProfile{}

	// ingest body data
	body, err := ioutil.ReadAll(io.LimitReader(r.Body, cfg.Server.ReqSizeLimit))
	if err != nil {
		panic(err)
	}
	if err := r.Body.Close(); err != nil {
		panic(err)
	}
	// parse body json
	if err := json.Unmarshal(body, &incoming); err != nil {
		output, _ = respond.MarshalContent(respond.BadRequestBadJSON, contentType, "", " ")
		code = 400
		return code, h, output, err
	}

	session, err := mongo.OpenSession(tenantDbConfig)
	defer mongo.CloseSession(session)
	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// create filter to retrieve specific profile with id
	filter := bson.M{"id": vars["ID"]}

	incoming.ID = vars["ID"]

	// Retrieve Results from database
	results := []OpsProfile{}
	err = mongo.Find(session, tenantDbConfig.Db, "operations_profiles", filter, "name", &results)

	if err != nil {
		panic(err)
	}

	// Check if nothing found
	if len(results) < 1 {
		output, _ = respond.MarshalContent(respond.NotFound, contentType, "", " ")
		code = 404
		return code, h, output, err
	}

	// Validate States
	var errList []string
	errList = append(errList, incoming.validateDuplicates()...)
	errList = append(errList, incoming.validateStates()...)
	errList = append(errList, incoming.validateMentions()...)

	if len(errList) > 0 {
		output, err = createErrView("Validation Error", 422, errList)
		code = 422
		return code, h, output, err
	}

	// run the update query
	err = mongo.Update(session, tenantDbConfig.Db, "operations_profiles", filter, incoming)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// Create view for response message
	output, err = createMsgView("Operations Profile successfully updated", 200) //Render the results into JSON
	code = 200
	return code, h, output, err
}

// Delete function used to implement remove tenant request
func Delete(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START

	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	contentType := "text/xml"
	charset := "utf-8"

	//STANDARD DECLARATIONS END

	// Content Negotiation
	contentType, err = respond.ParseAcceptHeader(r)
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	vars := mux.Vars(r)

	// if authentication procedure fails then
	// return unauthorized
	if authentication.AuthenticateAdmin(r.Header, cfg) == false {

		output, _ = respond.MarshalContent(respond.UnauthorizedMessage, contentType, "", " ")
		code = http.StatusUnauthorized //If wrong api key is passed we return UNAUTHORIZED http status
		return code, h, output, err
	}

	// Try to open the mongo session
	session, err := mongo.OpenSession(cfg.MongoDB)
	defer session.Close()

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	filter := bson.M{"id": vars["ID"]}

	// Retrieve Results from database
	results := []Tenant{}
	err = mongo.Find(session, cfg.MongoDB.Db, "tenants", filter, "name", &results)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// Check if nothing found
	if len(results) < 1 {
		output, _ = respond.MarshalContent(respond.NotFound, contentType, "", " ")
		code = http.StatusNotFound
		return code, h, output, err
	}

	mongo.Remove(session, cfg.MongoDB.Db, "tenants", filter)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// Create view of the results
	output, err = createMsgView("Tenant Successfully Deleted", 200) //Render the results into JSON

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))
	return code, h, output, err

}

// List function that implements the http GET request that retrieves
// all avaiable report information
func List(r *http.Request, cfg config.Config) (int, http.Header, []byte, error) {

	//STANDARD DECLARATIONS START
	code := http.StatusOK
	h := http.Header{}
	output := []byte("")
	err := error(nil)
	contentType := "text/xml"
	charset := "utf-8"
	//STANDARD DECLARATIONS END

	urlValues := r.URL.Query()
	contentType, err = respond.ParseAcceptHeader(r)
	h.Set("Content-Type", fmt.Sprintf("%s; charset=%s", contentType, charset))

	if err != nil {
		code = http.StatusNotAcceptable
		output, _ = respond.MarshalContent(respond.NotAcceptableContentType, contentType, "", " ")
		return code, h, output, err
	}

	tenantDbConfig, err := authentication.AuthenticateTenant(r.Header, cfg)

	if err != nil {
		output, _ = respond.MarshalContent(respond.UnauthorizedMessage, contentType, "", " ")
		code = http.StatusUnauthorized //If wrong api key is passed we return UNAUTHORIZED http status
		return code, h, output, err
	}

	// Try to open the mongo session
	session, err := mongo.OpenSession(cfg.MongoDB)
	defer session.Close()

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	query := bson.M{}

	if urlValues.Get("name") != "" {
		query["info.name"] = urlValues["name"]
	}

	// Create structure for storing query results
	results := []MongoInterface{}
	// Query tenant collection for all available documents.
	// nil query param == match everything
	err = mongo.Find(session, tenantDbConfig.Db, reportsColl, nil, "id", &results)
	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	// After successfully retrieving the db results
	// call the createView function to render them into idented xml
	output, err = createView(results, contentType)

	if err != nil {
		code = http.StatusInternalServerError
		return code, h, output, err
	}

	h.Set("Content-Type", fmt.Sprintf("