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* influx binding * corrected linting errors Co-authored-by: Yaron Schneider <yaronsc@microsoft.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| // ------------------------------------------------------------ | ||
| // Copyright (c) Microsoft Corporation. | ||
| // Licensed under the MIT License. | ||
| // ------------------------------------------------------------ | ||
|
|
||
| package influx | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
|
|
||
| "github.com/dapr/components-contrib/bindings" | ||
| "github.com/dapr/dapr/pkg/logger" | ||
| influxdb2 "github.com/influxdata/influxdb-client-go" | ||
| "github.com/influxdata/influxdb-client-go/api" | ||
| ) | ||
|
|
||
| // Influx allows writing to InfluxDB | ||
| type Influx struct { | ||
| metadata *influxMetadata | ||
| client influxdb2.Client | ||
| writeAPI api.WriteAPIBlocking | ||
| logger logger.Logger | ||
| } | ||
|
|
||
| type influxMetadata struct { | ||
| URL string `json:"url"` | ||
| Token string `json:"token"` | ||
| Org string `json:"org"` | ||
| Bucket string `json:"bucket"` | ||
| } | ||
|
|
||
| // NewInflux returns a new kafka binding instance | ||
| func NewInflux(logger logger.Logger) *Influx { | ||
| return &Influx{logger: logger} | ||
| } | ||
|
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| // Init does metadata parsing and connection establishment | ||
| func (i *Influx) Init(metadata bindings.Metadata) error { | ||
| influxMeta, err := i.getInfluxMetadata(metadata) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| i.metadata = influxMeta | ||
| if i.metadata.URL == "" { | ||
| return errors.New("Influx Error: URL required") | ||
| } | ||
|
|
||
| if i.metadata.Token == "" { | ||
| return errors.New("Influx Error: Token required") | ||
| } | ||
|
|
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| if i.metadata.Org == "" { | ||
| return errors.New("Influx Error: Org required") | ||
| } | ||
|
|
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| if i.metadata.Bucket == "" { | ||
| return errors.New("Influx Error: Bucket required") | ||
| } | ||
|
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| client := influxdb2.NewClient(i.metadata.URL, i.metadata.Token) | ||
| i.client = client | ||
| i.writeAPI = i.client.WriteAPIBlocking(i.metadata.Org, i.metadata.Bucket) | ||
| return nil | ||
| } | ||
|
|
||
| // GetInfluxMetadata returns new Influx metadata | ||
| func (i *Influx) getInfluxMetadata(metadata bindings.Metadata) (*influxMetadata, error) { | ||
| b, err := json.Marshal(metadata.Properties) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| var iMetadata influxMetadata | ||
| err = json.Unmarshal(b, &iMetadata) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return &iMetadata, nil | ||
| } | ||
|
|
||
| // Operations returns supported operations | ||
| func (i *Influx) Operations() []bindings.OperationKind { | ||
| return []bindings.OperationKind{bindings.CreateOperation} | ||
| } | ||
|
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| // Invoke called on supported operations | ||
| func (i *Influx) Invoke(req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) { | ||
| var jsonPoint map[string]interface{} | ||
| err := json.Unmarshal(req.Data, &jsonPoint) | ||
| if err != nil { | ||
| return nil, errors.New("Influx Error: Cannot convert request data") | ||
| } | ||
|
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| line := fmt.Sprintf("%s,%s %s", jsonPoint["measurement"], jsonPoint["tags"], jsonPoint["values"]) | ||
|
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| // write the point | ||
| err = i.writeAPI.WriteRecord(context.Background(), line) | ||
| if err != nil { | ||
| return nil, errors.New("Influx Error: Cannot write point") | ||
| } | ||
| i.client.Close() | ||
| return nil, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| // ------------------------------------------------------------ | ||
| // Copyright (c) Microsoft Corporation. | ||
| // Licensed under the MIT License. | ||
| // ------------------------------------------------------------ | ||
|
|
||
| package influx | ||
|
|
||
| import ( | ||
| "testing" | ||
|
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| "github.com/dapr/components-contrib/bindings" | ||
| "github.com/dapr/dapr/pkg/logger" | ||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
|
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| func TestParseMetadata(t *testing.T) { | ||
| m := bindings.Metadata{} | ||
| m.Properties = map[string]string{"Url": "a", "Token": "a", "Org": "a", "Bucket": "a"} | ||
| influx := Influx{logger: logger.NewLogger("test")} | ||
| im, err := influx.getInfluxMetadata(m) | ||
| assert.Nil(t, err) | ||
| assert.Equal(t, "a", im.URL) | ||
| assert.Equal(t, "a", im.Token) | ||
| assert.Equal(t, "a", im.Org) | ||
| assert.Equal(t, "a", im.Bucket) | ||
| } |
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