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Merge pull request #1012 from SomtochiAma/influxdb
Add Influxdb metric provider
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| /* | ||
| Copyright 2021 The Flux authors | ||
| Licensed 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 providers | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "net/url" | ||
| "time" | ||
|
|
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| influxdb2 "github.com/influxdata/influxdb-client-go/v2" | ||
|
|
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| flaggerv1 "github.com/fluxcd/flagger/pkg/apis/flagger/v1beta1" | ||
| ) | ||
|
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| type InfluxdbProvider struct { | ||
| client influxdb2.Client | ||
| org string | ||
| } | ||
|
|
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| func NewInfluxdbProvider(provider flaggerv1.MetricTemplateProvider, | ||
| credentials map[string][]byte) (*InfluxdbProvider, error) { | ||
| influxURL, err := url.Parse(provider.Address) | ||
| var token string | ||
| var influxProvider InfluxdbProvider | ||
|
|
||
| if provider.Address == "" || err != nil { | ||
| return nil, fmt.Errorf("%s address %s is not a valid URL", provider.Type, provider.Address) | ||
| } | ||
|
|
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| if provider.SecretRef != nil { | ||
| if authToken, ok := credentials["token"]; ok { | ||
| token = string(authToken) | ||
| } else { | ||
| return nil, fmt.Errorf("%s credentials does not contain an authentication token", provider.Type) | ||
| } | ||
|
|
||
| if org, ok := credentials["org"]; ok { | ||
| influxProvider.org = string(org) | ||
| } else { | ||
| return nil, fmt.Errorf("%s credentials does not contain an organisation", provider.Type) | ||
| } | ||
| } | ||
|
|
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| client := influxdb2.NewClient(influxURL.String(), token) | ||
| influxProvider.client = client | ||
|
|
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| return &influxProvider, nil | ||
| } | ||
|
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| func (i *InfluxdbProvider) RunQuery(query string) (float64, error) { | ||
| queryAPI := i.client.QueryAPI(i.org) | ||
| ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second) | ||
| defer cancel() | ||
| result, err := queryAPI.Query(ctx, query) | ||
| if err != nil { | ||
| return 0, fmt.Errorf("error accessing influxdb query api: %s", err) | ||
| } | ||
| for result.Next() { | ||
| if result.Err() != nil { | ||
| return 0, fmt.Errorf("query error: %s", err) | ||
| } | ||
| if result.Record().Value() == nil { | ||
| return 0, fmt.Errorf("invalid response: %s: %w", result.Record().String(), ErrNoValuesFound) | ||
| } | ||
|
|
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| if float, ok := result.Record().Value().(float64); ok { | ||
| return float, nil | ||
| } | ||
|
|
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| return 0, fmt.Errorf("invalid response: %s", result.Record().String()) | ||
| } | ||
|
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| return 0, nil | ||
| } | ||
|
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| // IsOnline runs a simple query against the default bucket. | ||
| func (i *InfluxdbProvider) IsOnline() (bool, error) { | ||
| queryAPI := i.client.QueryAPI(i.org) | ||
| ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second) | ||
| defer cancel() | ||
| result, err := queryAPI.Query(ctx, `from(bucket: "default") |> range(start: -2h)`) | ||
| if err != nil { | ||
| return false, fmt.Errorf("error accessing influxdb query api: %s", err) | ||
| } | ||
| for result.Next() { | ||
| if result.Err() != nil { | ||
| return false, fmt.Errorf("query error: %s", err) | ||
| } | ||
| } | ||
|
|
||
| return true, nil | ||
| } |
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