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|
package linodego
import (
"context"
"fmt"
"net/http"
"net/url"
"os"
"path"
"github.com/go-resty/resty/v2"
)
const (
// MonitorAPIHost is the default monitor-api host
MonitorAPIHost = "monitor-api.linode.com"
// MonitorAPIHostVar is the env var to check for the alternate Monitor API URL
MonitorAPIHostVar = "MONITOR_API_URL"
// MonitorAPIVersion is the default API version to use
MonitorAPIVersion = "v2beta"
// MonitorAPIVersionVar is the env var to check for the alternate Monitor API version
MonitorAPIVersionVar = "MONITOR_API_VERSION"
// MonitorAPIEnvVar is the env var to check for Monitor API token
MonitorAPIEnvVar = "MONITOR_API_TOKEN"
)
// MonitorClient is a wrapper around the Resty client
type MonitorClient struct {
resty *resty.Client
debug bool
apiBaseURL string
apiProtocol string
apiVersion string
userAgent string
}
// NewMonitorClient is the entry point for user to create a new MonitorClient
// It utilizes default values and looks for environment variables to initialize a MonitorClient.
func NewMonitorClient(hc *http.Client) (mClient MonitorClient) {
if hc != nil {
mClient.resty = resty.NewWithClient(hc)
} else {
mClient.resty = resty.New()
}
mClient.SetUserAgent(DefaultUserAgent)
baseURL, baseURLExists := os.LookupEnv(MonitorAPIHostVar)
if baseURLExists {
mClient.SetBaseURL(baseURL)
} else {
mClient.SetBaseURL(MonitorAPIHost)
}
apiVersion, apiVersionExists := os.LookupEnv(MonitorAPIVersionVar)
if apiVersionExists {
mClient.SetAPIVersion(apiVersion)
} else {
mClient.SetAPIVersion(MonitorAPIVersion)
}
token, apiTokenExists := os.LookupEnv(MonitorAPIEnvVar)
if apiTokenExists {
mClient.SetToken(token)
}
mClient.SetDebug(envDebug)
return
}
// SetUserAgent sets a custom user-agent for HTTP requests
func (mc *MonitorClient) SetUserAgent(ua string) *MonitorClient {
mc.userAgent = ua
mc.resty.SetHeader("User-Agent", mc.userAgent)
return mc
}
// R wraps resty's R method
func (mc *MonitorClient) R(ctx context.Context) *resty.Request {
return mc.resty.R().
ExpectContentType("application/json").
SetHeader("Content-Type", "application/json").
SetContext(ctx).
SetError(APIError{})
}
// SetDebug sets the debug on resty's client
func (mc *MonitorClient) SetDebug(debug bool) *MonitorClient {
mc.debug = debug
mc.resty.SetDebug(debug)
return mc
}
// SetLogger allows the user to override the output
// logger for debug logs.
func (mc *MonitorClient) SetLogger(logger Logger) *MonitorClient {
mc.resty.SetLogger(logger)
return mc
}
// SetBaseURL is the helper function to set base url
func (mc *MonitorClient) SetBaseURL(baseURL string) *MonitorClient {
baseURLPath, _ := url.Parse(baseURL)
mc.apiBaseURL = path.Join(baseURLPath.Host, baseURLPath.Path)
mc.apiProtocol = baseURLPath.Scheme
mc.updateMonitorHostURL()
return mc
}
// SetAPIVersion is the helper function to set api version
func (mc *MonitorClient) SetAPIVersion(apiVersion string) *MonitorClient {
mc.apiVersion = apiVersion
mc.updateMonitorHostURL()
return mc
}
// SetRootCertificate adds a root certificate to the underlying TLS client config
func (mc *MonitorClient) SetRootCertificate(path string) *MonitorClient {
mc.resty.SetRootCertificate(path)
return mc
}
// SetToken sets the API token for all requests from this client
func (mc *MonitorClient) SetToken(token string) *MonitorClient {
mc.resty.SetHeader("Authorization", fmt.Sprintf("Bearer %s", token))
return mc
}
// SetHeader sets a custom header to be used in all API requests made with the current client.
// NOTE: Some headers may be overridden by the individual request functions.
func (mc *MonitorClient) SetHeader(name, value string) {
mc.resty.SetHeader(name, value)
}
func (mc *MonitorClient) updateMonitorHostURL() {
apiProto := APIProto
baseURL := MonitorAPIHost
apiVersion := MonitorAPIVersion
if mc.apiBaseURL != "" {
baseURL = mc.apiBaseURL
}
if mc.apiVersion != "" {
apiVersion = mc.apiVersion
}
if mc.apiProtocol != "" {
apiProto = mc.apiProtocol
}
mc.resty.SetBaseURL(
fmt.Sprintf(
"%s://%s/%s",
apiProto,
baseURL,
url.PathEscape(apiVersion),
),
)
}
|
