133 lines
2.7 KiB
Go
133 lines
2.7 KiB
Go
package nginx_plus_api
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import (
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"fmt"
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"net/http"
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"net/url"
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"sync"
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"time"
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"github.com/influxdata/telegraf"
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"github.com/influxdata/telegraf/internal"
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"github.com/influxdata/telegraf/internal/tls"
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"github.com/influxdata/telegraf/plugins/inputs"
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)
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type NginxPlusApi struct {
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Urls []string `toml:"urls"`
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ApiVersion int64 `toml:"api_version"`
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ResponseTimeout internal.Duration `toml:"response_timeout"`
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tls.ClientConfig
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client *http.Client
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}
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const (
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// Default settings
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defaultApiVersion = 3
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// Paths
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processesPath = "processes"
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connectionsPath = "connections"
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sslPath = "ssl"
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httpRequestsPath = "http/requests"
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httpServerZonesPath = "http/server_zones"
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httpLocationZonesPath = "http/location_zones"
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httpUpstreamsPath = "http/upstreams"
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httpCachesPath = "http/caches"
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resolverZonesPath = "resolvers"
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streamServerZonesPath = "stream/server_zones"
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streamUpstreamsPath = "stream/upstreams"
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)
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var sampleConfig = `
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## An array of API URI to gather stats.
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urls = ["http://localhost/api"]
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# Nginx API version, default: 3
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# api_version = 3
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# HTTP response timeout (default: 5s)
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response_timeout = "5s"
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## Optional TLS Config
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# tls_ca = "/etc/telegraf/ca.pem"
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# tls_cert = "/etc/telegraf/cert.pem"
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# tls_key = "/etc/telegraf/key.pem"
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## Use TLS but skip chain & host verification
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# insecure_skip_verify = false
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`
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func (n *NginxPlusApi) SampleConfig() string {
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return sampleConfig
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}
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func (n *NginxPlusApi) Description() string {
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return "Read Nginx Plus Api documentation"
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}
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func (n *NginxPlusApi) Gather(acc telegraf.Accumulator) error {
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var wg sync.WaitGroup
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// Create an HTTP client that is re-used for each
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// collection interval
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if n.ApiVersion == 0 {
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n.ApiVersion = defaultApiVersion
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}
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if n.client == nil {
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client, err := n.createHttpClient()
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if err != nil {
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return err
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}
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n.client = client
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}
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for _, u := range n.Urls {
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addr, err := url.Parse(u)
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if err != nil {
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acc.AddError(fmt.Errorf("Unable to parse address '%s': %s", u, err))
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continue
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}
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wg.Add(1)
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go func(addr *url.URL) {
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defer wg.Done()
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n.gatherMetrics(addr, acc)
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}(addr)
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}
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wg.Wait()
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return nil
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}
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func (n *NginxPlusApi) createHttpClient() (*http.Client, error) {
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if n.ResponseTimeout.Duration < time.Second {
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n.ResponseTimeout.Duration = time.Second * 5
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}
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tlsConfig, err := n.ClientConfig.TLSConfig()
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if err != nil {
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return nil, err
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}
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client := &http.Client{
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Transport: &http.Transport{
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TLSClientConfig: tlsConfig,
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},
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Timeout: n.ResponseTimeout.Duration,
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}
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return client, nil
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}
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func init() {
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inputs.Add("nginx_plus_api", func() telegraf.Input {
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return &NginxPlusApi{}
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})
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}
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