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#GoLang AWS Cloudwatch
## Installation
Please refer to the project's main page at [https://github.com/docker/goamz](https://github.com/docker/goamz) for instructions about how to install.
## Available methods
<table>
<tr>
<td>GetMetricStatistics</td>
<td>Gets statistics for the specified metric.</td>
</tr>
<tr>
<td>ListMetrics</td>
<td>Returns a list of valid metrics stored for the AWS account.</td>
</tr>
<tr>
<td>PutMetricData</td>
<td>Publishes metric data points to Amazon CloudWatch.</td>
</tr>
</table>
[Please refer to AWS Cloudwatch's documentation for more info](http://docs.aws.amazon.com/AmazonCloudWatch/latest/APIReference/API_Operations.html)
##Examples
####Get Metric Statistics
```go
import (
"fmt"
"time"
"os"
"github.com/docker/goamz/aws"
"github.com/docker/goamz/cloudwatch"
)
func test_get_metric_statistics() {
region := aws.Regions["a_region"]
namespace:= "AWS/ELB"
dimension := &cloudwatch.Dimension{
Name: "LoadBalancerName",
Value: "your_value",
}
metricName := "RequestCount"
now := time.Now()
prev := now.Add(time.Duration(600)*time.Second*-1) // 600 secs = 10 minutes
auth, err := aws.GetAuth("your_AccessKeyId", "your_SecretAccessKey", "", now)
if err != nil {
fmt.Printf("Error: %+v\n", err)
os.Exit(1)
}
cw, err := cloudwatch.NewCloudWatch(auth, region.CloudWatchServicepoint)
request := &cloudwatch.GetMetricStatisticsRequest {
Dimensions: []cloudwatch.Dimension{*dimension},
EndTime: now,
StartTime: prev,
MetricName: metricName,
Unit: cloudwatch.UnitCount, // Not mandatory
Period: 60,
Statistics: []string{cloudwatch.StatisticDatapointSum},
Namespace: namespace,
}
response, err := cw.GetMetricStatistics(request)
if err == nil {
fmt.Printf("%+v\n", response)
} else {
fmt.Printf("Error: %+v\n", err)
}
}
```
####List Metrics
```go
import (
"fmt"
"time"
"os"
"github.com/docker/goamz/aws"
"github.com/docker/goamz/cloudwatch"
)
func test_list_metrics() {
region := aws.Regions["us-east-1"] // Any region here
now := time.Now()
auth, err := aws.GetAuth("an AccessKeyId", "a SecretAccessKey", "", now)
if err != nil {
fmt.Printf("Error: %+v\n", err)
os.Exit(1)
}
cw, err := cloudwatch.NewCloudWatch(auth, region.CloudWatchServicepoint)
request := &cloudwatch.ListMetricsRequest{Namespace: "AWS/EC2"}
response, err := cw.ListMetrics(request)
if err == nil {
fmt.Printf("%+v\n", response)
} else {
fmt.Printf("Error: %+v\n", err)
}
}
```
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