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convert_to_protobuf.go
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convert_to_protobuf.go
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package backend
import (
"errors"
"time"
"github.com/kosimas/grafana-plugin-sdk-go/genproto/pluginv2"
)
// ConvertToProtobuf has a collection of methods for converting the autogenerated
// protobuf go code to our SDK objects. This object exists to attach a collection
// of conversion methods to.
//
// This is used internally by the SDK and inside Grafana-server, plugin authors should not
// need this functionality.
type ConvertToProtobuf struct{}
// ToProto returns a new ConvertToProtobuf.
func ToProto() ConvertToProtobuf {
return ConvertToProtobuf{}
}
// User converts the SDK version of a User to the protobuf version.
func (t ConvertToProtobuf) User(user *User) *pluginv2.User {
if user == nil {
return nil
}
return &pluginv2.User{
Login: user.Login,
Name: user.Name,
Email: user.Email,
Role: user.Role,
}
}
// AppInstanceSettings converts the SDK version of an AppInstanceSettings to the protobuf version.
func (t ConvertToProtobuf) AppInstanceSettings(s *AppInstanceSettings) *pluginv2.AppInstanceSettings {
if s == nil {
return nil
}
return &pluginv2.AppInstanceSettings{
JsonData: s.JSONData,
DecryptedSecureJsonData: s.DecryptedSecureJSONData,
LastUpdatedMS: s.Updated.UnixNano() / int64(time.Millisecond),
}
}
// DataSourceInstanceSettings converts the SDK version of a DataSourceInstanceSettings to the protobuf version.
func (t ConvertToProtobuf) DataSourceInstanceSettings(s *DataSourceInstanceSettings) *pluginv2.DataSourceInstanceSettings {
if s == nil {
return nil
}
return &pluginv2.DataSourceInstanceSettings{
Id: s.ID,
Uid: s.UID,
Name: s.Name,
Url: s.URL,
User: s.User,
Database: s.Database,
BasicAuthEnabled: s.BasicAuthEnabled,
BasicAuthUser: s.BasicAuthUser,
JsonData: s.JSONData,
DecryptedSecureJsonData: s.DecryptedSecureJSONData,
LastUpdatedMS: s.Updated.UnixNano() / int64(time.Millisecond),
}
}
// PluginContext converts the SDK version of a PluginContext to the protobuf version.
func (t ConvertToProtobuf) PluginContext(pluginCtx PluginContext) *pluginv2.PluginContext {
return &pluginv2.PluginContext{
OrgId: pluginCtx.OrgID,
PluginId: pluginCtx.PluginID,
User: t.User(pluginCtx.User),
AppInstanceSettings: t.AppInstanceSettings(pluginCtx.AppInstanceSettings),
DataSourceInstanceSettings: t.DataSourceInstanceSettings(pluginCtx.DataSourceInstanceSettings),
}
}
// TimeRange converts the SDK version of a TimeRange to the protobuf version.
func (t ConvertToProtobuf) TimeRange(tr TimeRange) *pluginv2.TimeRange {
return &pluginv2.TimeRange{
FromEpochMS: tr.From.UnixNano() / int64(time.Millisecond),
ToEpochMS: tr.To.UnixNano() / int64(time.Millisecond),
}
}
// HealthStatus converts the SDK version of a HealthStatus to the protobuf version.
func (t ConvertToProtobuf) HealthStatus(status HealthStatus) pluginv2.CheckHealthResponse_HealthStatus {
switch status {
case HealthStatusUnknown:
return pluginv2.CheckHealthResponse_UNKNOWN
case HealthStatusOk:
return pluginv2.CheckHealthResponse_OK
case HealthStatusError:
return pluginv2.CheckHealthResponse_ERROR
}
panic("unsupported protobuf health status type in sdk")
}
// CheckHealthResponse converts the SDK version of a CheckHealthResponse to the protobuf version.
func (t ConvertToProtobuf) CheckHealthResponse(res *CheckHealthResult) *pluginv2.CheckHealthResponse {
return &pluginv2.CheckHealthResponse{
Status: t.HealthStatus(res.Status),
Message: res.Message,
JsonDetails: res.JSONDetails,
}
}
// DataQuery converts the SDK version of a DataQuery to the protobuf version.
func (t ConvertToProtobuf) DataQuery(q DataQuery) *pluginv2.DataQuery {
return &pluginv2.DataQuery{
RefId: q.RefID,
QueryType: q.QueryType,
MaxDataPoints: q.MaxDataPoints,
IntervalMS: q.Interval.Milliseconds(),
TimeRange: t.TimeRange(q.TimeRange),
Json: q.JSON,
}
}
// QueryDataRequest converts the SDK version of a QueryDataRequest to the protobuf version.
func (t ConvertToProtobuf) QueryDataRequest(req *QueryDataRequest) *pluginv2.QueryDataRequest {
queries := make([]*pluginv2.DataQuery, len(req.Queries))
for i, q := range req.Queries {
queries[i] = t.DataQuery(q)
}
return &pluginv2.QueryDataRequest{
PluginContext: t.PluginContext(req.PluginContext),
Headers: req.Headers,
Queries: queries,
}
}
// QueryDataResponse converts the SDK version of a QueryDataResponse to the protobuf version.
// It will set the RefID on the frames to the RefID key in Responses if a Frame's
// RefId property is an empty string.
func (t ConvertToProtobuf) QueryDataResponse(res *QueryDataResponse) (*pluginv2.QueryDataResponse, error) {
pQDR := &pluginv2.QueryDataResponse{
Responses: make(map[string]*pluginv2.DataResponse, len(res.Responses)),
}
for refID, dr := range res.Responses {
for _, f := range dr.Frames {
if f == nil {
return nil, errors.New("frame can not be nil")
}
if f.RefID == "" {
f.RefID = refID
}
}
encodedFrames, err := dr.Frames.MarshalArrow()
if err != nil {
return nil, err
}
pDR := pluginv2.DataResponse{
Frames: encodedFrames,
}
status := dr.Status
if dr.Error != nil {
pDR.Error = dr.Error.Error()
if !status.IsValid() {
status = statusFromError(dr.Error)
}
}
if status.IsValid() {
pDR.Status = int32(status)
} else if status == 0 {
pDR.Status = int32(StatusOK)
}
pQDR.Responses[refID] = &pDR
}
return pQDR, nil
}
// CallResourceResponse converts the SDK version of a CallResourceResponse to the protobuf version.
func (t ConvertToProtobuf) CallResourceResponse(resp *CallResourceResponse) *pluginv2.CallResourceResponse {
headers := map[string]*pluginv2.StringList{}
for key, values := range resp.Headers {
headers[key] = &pluginv2.StringList{Values: values}
}
return &pluginv2.CallResourceResponse{
Headers: headers,
Code: int32(resp.Status),
Body: resp.Body,
}
}
// CallResourceRequest converts the SDK version of a CallResourceRequest to the protobuf version.
func (t ConvertToProtobuf) CallResourceRequest(req *CallResourceRequest) *pluginv2.CallResourceRequest {
protoReq := &pluginv2.CallResourceRequest{
PluginContext: t.PluginContext(req.PluginContext),
Path: req.Path,
Method: req.Method,
Url: req.URL,
Body: req.Body,
}
if req.Headers == nil {
return protoReq
}
protoReq.Headers = make(map[string]*pluginv2.StringList, len(protoReq.Headers))
for k, values := range req.Headers {
protoReq.Headers[k] = &pluginv2.StringList{Values: values}
}
return protoReq
}
// RunStreamRequest ...
func (t ConvertToProtobuf) RunStreamRequest(req *RunStreamRequest) *pluginv2.RunStreamRequest {
protoReq := &pluginv2.RunStreamRequest{
PluginContext: t.PluginContext(req.PluginContext),
Path: req.Path,
Data: req.Data,
}
return protoReq
}
// SubscribeStreamRequest ...
func (t ConvertToProtobuf) SubscribeStreamRequest(req *SubscribeStreamRequest) *pluginv2.SubscribeStreamRequest {
return &pluginv2.SubscribeStreamRequest{
PluginContext: t.PluginContext(req.PluginContext),
Path: req.Path,
Data: req.Data,
}
}
// SubscribeStreamResponse ...
func (t ConvertToProtobuf) SubscribeStreamResponse(req *SubscribeStreamResponse) *pluginv2.SubscribeStreamResponse {
resp := &pluginv2.SubscribeStreamResponse{
Status: pluginv2.SubscribeStreamResponse_Status(req.Status),
}
if req.InitialData != nil {
resp.Data = req.InitialData.data
}
return resp
}
// PublishStreamRequest ...
func (t ConvertToProtobuf) PublishStreamRequest(req *PublishStreamRequest) *pluginv2.PublishStreamRequest {
return &pluginv2.PublishStreamRequest{
PluginContext: t.PluginContext(req.PluginContext),
Path: req.Path,
Data: req.Data,
}
}
// PublishStreamResponse ...
func (t ConvertToProtobuf) PublishStreamResponse(req *PublishStreamResponse) *pluginv2.PublishStreamResponse {
return &pluginv2.PublishStreamResponse{
Status: pluginv2.PublishStreamResponse_Status(req.Status),
Data: req.Data,
}
}
// StreamPacket ...
func (t ConvertToProtobuf) StreamPacket(p *StreamPacket) *pluginv2.StreamPacket {
protoReq := &pluginv2.StreamPacket{
Data: p.Data,
}
return protoReq
}
// CollectMetricsRequest converts the SDK version of a CollectMetricsRequest to the protobuf version.
func (t ConvertToProtobuf) CollectMetricsRequest(req *CollectMetricsRequest) *pluginv2.CollectMetricsRequest {
return &pluginv2.CollectMetricsRequest{
PluginContext: t.PluginContext(req.PluginContext),
}
}
// CollectMetricsResult converts the SDK version of a CollectMetricsResult to the protobuf version.
func (t ConvertToProtobuf) CollectMetricsResult(res *CollectMetricsResult) *pluginv2.CollectMetricsResponse {
return &pluginv2.CollectMetricsResponse{
Metrics: &pluginv2.CollectMetricsResponse_Payload{
Prometheus: res.PrometheusMetrics,
},
}
}