NewProvider returns a new empty provider with a given resolver type. If empty resolver type is net.DefaultResolver.
(resolverType ResolverType, maxIdleConnections uint, logger log.Logger, reg prometheus.Registerer)
| 58 | // NewProvider returns a new empty provider with a given resolver type. |
| 59 | // If empty resolver type is net.DefaultResolver. |
| 60 | func NewProvider(resolverType ResolverType, maxIdleConnections uint, logger log.Logger, reg prometheus.Registerer) *Provider { |
| 61 | var backend ipLookupResolver |
| 62 | switch resolverType { |
| 63 | case GolangResolverType: |
| 64 | backend = &godns.Resolver{Resolver: net.DefaultResolver} |
| 65 | case MiekgdnsResolverType: |
| 66 | backend = miekgdns.NewResolver(miekgdns.DefaultResolvConfPath, maxIdleConnections, logger) |
| 67 | default: |
| 68 | level.Warn(logger).Log("msg", "no such resolver type, defaulting to golang", "type", resolverType) |
| 69 | backend = &godns.Resolver{Resolver: net.DefaultResolver} |
| 70 | } |
| 71 | |
| 72 | p := &Provider{ |
| 73 | resolver: NewResolver(backend, logger), |
| 74 | resolved: make(map[string][]string), |
| 75 | logger: logger, |
| 76 | resolverAddrsDesc: prometheus.NewDesc( |
| 77 | "dns_provider_results", |
| 78 | "The number of resolved endpoints for each configured address", |
| 79 | []string{"addr"}, |
| 80 | nil), |
| 81 | resolverLookupsCount: promauto.With(reg).NewCounter(prometheus.CounterOpts{ |
| 82 | Name: "dns_lookups_total", |
| 83 | Help: "The number of DNS lookups resolutions attempts", |
| 84 | }), |
| 85 | resolverFailuresCount: promauto.With(reg).NewCounter(prometheus.CounterOpts{ |
| 86 | Name: "dns_failures_total", |
| 87 | Help: "The number of DNS lookup failures", |
| 88 | }), |
| 89 | } |
| 90 | if reg != nil { |
| 91 | reg.MustRegister(p) |
| 92 | } |
| 93 | |
| 94 | return p |
| 95 | } |
| 96 | |
| 97 | // Clone returns a new provider from an existing one. |
| 98 | func (p *Provider) Clone() *Provider { |