netdata/netdata

// SPDX-License-Identifier: GPL-3.0-or-later

package consul

import (
    "errors"
    "net/http"
    "net/url"

    "github.com/netdata/netdata/go/go.d.plugin/pkg/prometheus"
    "github.com/netdata/netdata/go/go.d.plugin/pkg/web"
)

func (c *Consul) validateConfig() error {
    if c.URL == "" {
        return errors.New("'url' not set")
    }
    return nil
}

func (c *Consul) initHTTPClient() (*http.Client, error) {
    return web.NewHTTPClient(c.Client)
}

const urlPathAgentMetrics = "/v1/agent/metrics"

func (c *Consul) initPrometheusClient(httpClient *http.Client) (prometheus.Prometheus, error) {
    r, err := web.NewHTTPRequest(c.Request.Copy())
    if err != nil {
        return nil, err
    }
    r.URL.Path = urlPathAgentMetrics
    r.URL.RawQuery = url.Values{
        "format": []string{"prometheus"},
    }.Encode()

    req := c.Request.Copy()
    req.URL = r.URL.String()

    if c.ACLToken != "" {
        if req.Headers == nil {
            req.Headers = make(map[string]string)
        }
        req.Headers["X-Consul-Token"] = c.ACLToken
    }

    return prometheus.New(httpClient, req), nil
}