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https://github.com/opencensus-integrations/gomongowrapper
MongoDB Go wrapper source code
https://github.com/opencensus-integrations/gomongowrapper
Last synced: 3 months ago
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MongoDB Go wrapper source code
- Host: GitHub
- URL: https://github.com/opencensus-integrations/gomongowrapper
- Owner: opencensus-integrations
- License: other
- Created: 2018-10-31T06:39:16.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2020-05-22T00:03:42.000Z (about 4 years ago)
- Last Synced: 2023-07-27T22:26:12.489Z (11 months ago)
- Language: Go
- Size: 571 KB
- Stars: 7
- Watchers: 4
- Forks: 8
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Lists
- awesome-opencensus - gomongowrapper
README
# gomongowrapper
MongoDB Go wrapper source code
## Table of contents
- [End to end example](#end-to-end-example)
- [Traces](#traces)
- [Metrics](#metrics)
## End to end example
With a MongoDB server running at "localhost:27017" and running this example with Go
```go
package main
import (
"context"
"log"
"time"
"go.mongodb.org/mongo-driver/mongo/options"
"go.mongodb.org/mongo-driver/bson"
mongowrapper "github.com/opencensus-integrations/gomongowrapper"
"contrib.go.opencensus.io/exporter/stackdriver"
"go.opencensus.io/stats/view"
"go.opencensus.io/trace"
)
func main() {
// Enabling the OpenCensus exporter.
// Just using Stackdriver since it has both Tracing and Metrics
// and is easy to whip up. Add your desired one here.
sde, err := stackdriver.NewExporter(stackdriver.Options{
ProjectID: "census-demos",
MetricPrefix: "mongosample",
})
if err != nil {
log.Fatalf("Failed to create Stackdriver exporter: %v", err)
}
view.RegisterExporter(sde)
trace.RegisterExporter(sde)
if err := mongowrapper.RegisterAllViews(); err != nil {
log.Fatalf("Failed to register all views: %v\n", err)
}
defer func() {
<-time.After(2 * time.Minute)
}()
// Start a span like your application would start one.
ctx, span := trace.StartSpan(context.Background(), "Fetch", trace.WithSampler(trace.AlwaysSample()))
defer span.End()
// Now for the mongo connections, using the context
// with the span in it for continuity.
client, err := mongowrapper.NewClient(options.Client().ApplyURI("mongodb://localhost:27017"))
if err != nil {
log.Fatalf("Failed to create the new client: %v", err)
}
if err := client.Connect(ctx); err != nil {
log.Fatalf("Failed to open client connection: %v", err)
}
defer client.Disconnect(ctx)
coll := client.Database("the_db").Collection("music")
q := bson.M{"name": "Examples"}
cur, err := coll.Find(ctx, q)
if err != nil {
log.Fatalf("Find error: %v", err)
}
for cur.Next(ctx) {
elem := make(map[string]int)
if err := cur.Decode(elem); err != nil {
log.Printf("Decode error: %v", err)
continue
}
log.Printf("Got result: %v\n", elem)
}
log.Print("Done iterating")
_, err = coll.DeleteMany(ctx, q)
if err != nil {
log.Fatalf("Failed to delete: %v", err)
}
}
```
## Traces
## Metrics
