William Kurkian | ea86948 | 2019-04-09 15:16:11 -0400 | [diff] [blame] | 1 | package api |
| 2 | |
| 3 | import ( |
| 4 | "bufio" |
| 5 | "fmt" |
| 6 | "net/http" |
| 7 | "net/url" |
| 8 | ) |
| 9 | |
| 10 | // ServiceKind is the kind of service being registered. |
| 11 | type ServiceKind string |
| 12 | |
| 13 | const ( |
| 14 | // ServiceKindTypical is a typical, classic Consul service. This is |
| 15 | // represented by the absence of a value. This was chosen for ease of |
| 16 | // backwards compatibility: existing services in the catalog would |
| 17 | // default to the typical service. |
| 18 | ServiceKindTypical ServiceKind = "" |
| 19 | |
| 20 | // ServiceKindConnectProxy is a proxy for the Connect feature. This |
| 21 | // service proxies another service within Consul and speaks the connect |
| 22 | // protocol. |
| 23 | ServiceKindConnectProxy ServiceKind = "connect-proxy" |
| 24 | ) |
| 25 | |
| 26 | // ProxyExecMode is the execution mode for a managed Connect proxy. |
| 27 | type ProxyExecMode string |
| 28 | |
| 29 | const ( |
| 30 | // ProxyExecModeDaemon indicates that the proxy command should be long-running |
| 31 | // and should be started and supervised by the agent until it's target service |
| 32 | // is deregistered. |
| 33 | ProxyExecModeDaemon ProxyExecMode = "daemon" |
| 34 | |
| 35 | // ProxyExecModeScript indicates that the proxy command should be invoke to |
| 36 | // completion on each change to the configuration of lifecycle event. The |
| 37 | // script typically fetches the config and certificates from the agent API and |
| 38 | // then configures an externally managed daemon, perhaps starting and stopping |
| 39 | // it if necessary. |
| 40 | ProxyExecModeScript ProxyExecMode = "script" |
| 41 | ) |
| 42 | |
| 43 | // UpstreamDestType is the type of upstream discovery mechanism. |
| 44 | type UpstreamDestType string |
| 45 | |
| 46 | const ( |
| 47 | // UpstreamDestTypeService discovers instances via healthy service lookup. |
| 48 | UpstreamDestTypeService UpstreamDestType = "service" |
| 49 | |
| 50 | // UpstreamDestTypePreparedQuery discovers instances via prepared query |
| 51 | // execution. |
| 52 | UpstreamDestTypePreparedQuery UpstreamDestType = "prepared_query" |
| 53 | ) |
| 54 | |
| 55 | // AgentCheck represents a check known to the agent |
| 56 | type AgentCheck struct { |
| 57 | Node string |
| 58 | CheckID string |
| 59 | Name string |
| 60 | Status string |
| 61 | Notes string |
| 62 | Output string |
| 63 | ServiceID string |
| 64 | ServiceName string |
| 65 | Definition HealthCheckDefinition |
| 66 | } |
| 67 | |
| 68 | // AgentWeights represent optional weights for a service |
| 69 | type AgentWeights struct { |
| 70 | Passing int |
| 71 | Warning int |
| 72 | } |
| 73 | |
| 74 | // AgentService represents a service known to the agent |
| 75 | type AgentService struct { |
| 76 | Kind ServiceKind `json:",omitempty"` |
| 77 | ID string |
| 78 | Service string |
| 79 | Tags []string |
| 80 | Meta map[string]string |
| 81 | Port int |
| 82 | Address string |
| 83 | Weights AgentWeights |
| 84 | EnableTagOverride bool |
| 85 | CreateIndex uint64 `json:",omitempty"` |
| 86 | ModifyIndex uint64 `json:",omitempty"` |
| 87 | ContentHash string `json:",omitempty"` |
| 88 | // DEPRECATED (ProxyDestination) - remove this field |
| 89 | ProxyDestination string `json:",omitempty"` |
| 90 | Proxy *AgentServiceConnectProxyConfig `json:",omitempty"` |
| 91 | Connect *AgentServiceConnect `json:",omitempty"` |
| 92 | } |
| 93 | |
| 94 | // AgentServiceChecksInfo returns information about a Service and its checks |
| 95 | type AgentServiceChecksInfo struct { |
| 96 | AggregatedStatus string |
| 97 | Service *AgentService |
| 98 | Checks HealthChecks |
| 99 | } |
| 100 | |
| 101 | // AgentServiceConnect represents the Connect configuration of a service. |
| 102 | type AgentServiceConnect struct { |
| 103 | Native bool `json:",omitempty"` |
| 104 | Proxy *AgentServiceConnectProxy `json:",omitempty"` |
| 105 | SidecarService *AgentServiceRegistration `json:",omitempty"` |
| 106 | } |
| 107 | |
| 108 | // AgentServiceConnectProxy represents the Connect Proxy configuration of a |
| 109 | // service. |
| 110 | type AgentServiceConnectProxy struct { |
| 111 | ExecMode ProxyExecMode `json:",omitempty"` |
| 112 | Command []string `json:",omitempty"` |
| 113 | Config map[string]interface{} `json:",omitempty"` |
| 114 | Upstreams []Upstream `json:",omitempty"` |
| 115 | } |
| 116 | |
| 117 | // AgentServiceConnectProxyConfig is the proxy configuration in a connect-proxy |
| 118 | // ServiceDefinition or response. |
| 119 | type AgentServiceConnectProxyConfig struct { |
| 120 | DestinationServiceName string |
| 121 | DestinationServiceID string `json:",omitempty"` |
| 122 | LocalServiceAddress string `json:",omitempty"` |
| 123 | LocalServicePort int `json:",omitempty"` |
| 124 | Config map[string]interface{} `json:",omitempty"` |
| 125 | Upstreams []Upstream |
| 126 | } |
| 127 | |
| 128 | // AgentMember represents a cluster member known to the agent |
| 129 | type AgentMember struct { |
| 130 | Name string |
| 131 | Addr string |
| 132 | Port uint16 |
| 133 | Tags map[string]string |
| 134 | Status int |
| 135 | ProtocolMin uint8 |
| 136 | ProtocolMax uint8 |
| 137 | ProtocolCur uint8 |
| 138 | DelegateMin uint8 |
| 139 | DelegateMax uint8 |
| 140 | DelegateCur uint8 |
| 141 | } |
| 142 | |
| 143 | // AllSegments is used to select for all segments in MembersOpts. |
| 144 | const AllSegments = "_all" |
| 145 | |
| 146 | // MembersOpts is used for querying member information. |
| 147 | type MembersOpts struct { |
| 148 | // WAN is whether to show members from the WAN. |
| 149 | WAN bool |
| 150 | |
| 151 | // Segment is the LAN segment to show members for. Setting this to the |
| 152 | // AllSegments value above will show members in all segments. |
| 153 | Segment string |
| 154 | } |
| 155 | |
| 156 | // AgentServiceRegistration is used to register a new service |
| 157 | type AgentServiceRegistration struct { |
| 158 | Kind ServiceKind `json:",omitempty"` |
| 159 | ID string `json:",omitempty"` |
| 160 | Name string `json:",omitempty"` |
| 161 | Tags []string `json:",omitempty"` |
| 162 | Port int `json:",omitempty"` |
| 163 | Address string `json:",omitempty"` |
| 164 | EnableTagOverride bool `json:",omitempty"` |
| 165 | Meta map[string]string `json:",omitempty"` |
| 166 | Weights *AgentWeights `json:",omitempty"` |
| 167 | Check *AgentServiceCheck |
| 168 | Checks AgentServiceChecks |
| 169 | // DEPRECATED (ProxyDestination) - remove this field |
| 170 | ProxyDestination string `json:",omitempty"` |
| 171 | Proxy *AgentServiceConnectProxyConfig `json:",omitempty"` |
| 172 | Connect *AgentServiceConnect `json:",omitempty"` |
| 173 | } |
| 174 | |
| 175 | // AgentCheckRegistration is used to register a new check |
| 176 | type AgentCheckRegistration struct { |
| 177 | ID string `json:",omitempty"` |
| 178 | Name string `json:",omitempty"` |
| 179 | Notes string `json:",omitempty"` |
| 180 | ServiceID string `json:",omitempty"` |
| 181 | AgentServiceCheck |
| 182 | } |
| 183 | |
| 184 | // AgentServiceCheck is used to define a node or service level check |
| 185 | type AgentServiceCheck struct { |
| 186 | CheckID string `json:",omitempty"` |
| 187 | Name string `json:",omitempty"` |
| 188 | Args []string `json:"ScriptArgs,omitempty"` |
| 189 | DockerContainerID string `json:",omitempty"` |
| 190 | Shell string `json:",omitempty"` // Only supported for Docker. |
| 191 | Interval string `json:",omitempty"` |
| 192 | Timeout string `json:",omitempty"` |
| 193 | TTL string `json:",omitempty"` |
| 194 | HTTP string `json:",omitempty"` |
| 195 | Header map[string][]string `json:",omitempty"` |
| 196 | Method string `json:",omitempty"` |
| 197 | TCP string `json:",omitempty"` |
| 198 | Status string `json:",omitempty"` |
| 199 | Notes string `json:",omitempty"` |
| 200 | TLSSkipVerify bool `json:",omitempty"` |
| 201 | GRPC string `json:",omitempty"` |
| 202 | GRPCUseTLS bool `json:",omitempty"` |
| 203 | AliasNode string `json:",omitempty"` |
| 204 | AliasService string `json:",omitempty"` |
| 205 | |
| 206 | // In Consul 0.7 and later, checks that are associated with a service |
| 207 | // may also contain this optional DeregisterCriticalServiceAfter field, |
| 208 | // which is a timeout in the same Go time format as Interval and TTL. If |
| 209 | // a check is in the critical state for more than this configured value, |
| 210 | // then its associated service (and all of its associated checks) will |
| 211 | // automatically be deregistered. |
| 212 | DeregisterCriticalServiceAfter string `json:",omitempty"` |
| 213 | } |
| 214 | type AgentServiceChecks []*AgentServiceCheck |
| 215 | |
| 216 | // AgentToken is used when updating ACL tokens for an agent. |
| 217 | type AgentToken struct { |
| 218 | Token string |
| 219 | } |
| 220 | |
| 221 | // Metrics info is used to store different types of metric values from the agent. |
| 222 | type MetricsInfo struct { |
| 223 | Timestamp string |
| 224 | Gauges []GaugeValue |
| 225 | Points []PointValue |
| 226 | Counters []SampledValue |
| 227 | Samples []SampledValue |
| 228 | } |
| 229 | |
| 230 | // GaugeValue stores one value that is updated as time goes on, such as |
| 231 | // the amount of memory allocated. |
| 232 | type GaugeValue struct { |
| 233 | Name string |
| 234 | Value float32 |
| 235 | Labels map[string]string |
| 236 | } |
| 237 | |
| 238 | // PointValue holds a series of points for a metric. |
| 239 | type PointValue struct { |
| 240 | Name string |
| 241 | Points []float32 |
| 242 | } |
| 243 | |
| 244 | // SampledValue stores info about a metric that is incremented over time, |
| 245 | // such as the number of requests to an HTTP endpoint. |
| 246 | type SampledValue struct { |
| 247 | Name string |
| 248 | Count int |
| 249 | Sum float64 |
| 250 | Min float64 |
| 251 | Max float64 |
| 252 | Mean float64 |
| 253 | Stddev float64 |
| 254 | Labels map[string]string |
| 255 | } |
| 256 | |
| 257 | // AgentAuthorizeParams are the request parameters for authorizing a request. |
| 258 | type AgentAuthorizeParams struct { |
| 259 | Target string |
| 260 | ClientCertURI string |
| 261 | ClientCertSerial string |
| 262 | } |
| 263 | |
| 264 | // AgentAuthorize is the response structure for Connect authorization. |
| 265 | type AgentAuthorize struct { |
| 266 | Authorized bool |
| 267 | Reason string |
| 268 | } |
| 269 | |
| 270 | // ConnectProxyConfig is the response structure for agent-local proxy |
| 271 | // configuration. |
| 272 | type ConnectProxyConfig struct { |
| 273 | ProxyServiceID string |
| 274 | TargetServiceID string |
| 275 | TargetServiceName string |
| 276 | ContentHash string |
| 277 | // DEPRECATED(managed-proxies) - this struct is re-used for sidecar configs |
| 278 | // but they don't need ExecMode or Command |
| 279 | ExecMode ProxyExecMode `json:",omitempty"` |
| 280 | Command []string `json:",omitempty"` |
| 281 | Config map[string]interface{} |
| 282 | Upstreams []Upstream |
| 283 | } |
| 284 | |
| 285 | // Upstream is the response structure for a proxy upstream configuration. |
| 286 | type Upstream struct { |
| 287 | DestinationType UpstreamDestType `json:",omitempty"` |
| 288 | DestinationNamespace string `json:",omitempty"` |
| 289 | DestinationName string |
| 290 | Datacenter string `json:",omitempty"` |
| 291 | LocalBindAddress string `json:",omitempty"` |
| 292 | LocalBindPort int `json:",omitempty"` |
| 293 | Config map[string]interface{} `json:",omitempty"` |
| 294 | } |
| 295 | |
| 296 | // Agent can be used to query the Agent endpoints |
| 297 | type Agent struct { |
| 298 | c *Client |
| 299 | |
| 300 | // cache the node name |
| 301 | nodeName string |
| 302 | } |
| 303 | |
| 304 | // Agent returns a handle to the agent endpoints |
| 305 | func (c *Client) Agent() *Agent { |
| 306 | return &Agent{c: c} |
| 307 | } |
| 308 | |
| 309 | // Self is used to query the agent we are speaking to for |
| 310 | // information about itself |
| 311 | func (a *Agent) Self() (map[string]map[string]interface{}, error) { |
| 312 | r := a.c.newRequest("GET", "/v1/agent/self") |
| 313 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 314 | if err != nil { |
| 315 | return nil, err |
| 316 | } |
| 317 | defer resp.Body.Close() |
| 318 | |
| 319 | var out map[string]map[string]interface{} |
| 320 | if err := decodeBody(resp, &out); err != nil { |
| 321 | return nil, err |
| 322 | } |
| 323 | return out, nil |
| 324 | } |
| 325 | |
| 326 | // Host is used to retrieve information about the host the |
| 327 | // agent is running on such as CPU, memory, and disk. Requires |
| 328 | // a operator:read ACL token. |
| 329 | func (a *Agent) Host() (map[string]interface{}, error) { |
| 330 | r := a.c.newRequest("GET", "/v1/agent/host") |
| 331 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 332 | if err != nil { |
| 333 | return nil, err |
| 334 | } |
| 335 | defer resp.Body.Close() |
| 336 | |
| 337 | var out map[string]interface{} |
| 338 | if err := decodeBody(resp, &out); err != nil { |
| 339 | return nil, err |
| 340 | } |
| 341 | return out, nil |
| 342 | } |
| 343 | |
| 344 | // Metrics is used to query the agent we are speaking to for |
| 345 | // its current internal metric data |
| 346 | func (a *Agent) Metrics() (*MetricsInfo, error) { |
| 347 | r := a.c.newRequest("GET", "/v1/agent/metrics") |
| 348 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 349 | if err != nil { |
| 350 | return nil, err |
| 351 | } |
| 352 | defer resp.Body.Close() |
| 353 | |
| 354 | var out *MetricsInfo |
| 355 | if err := decodeBody(resp, &out); err != nil { |
| 356 | return nil, err |
| 357 | } |
| 358 | return out, nil |
| 359 | } |
| 360 | |
| 361 | // Reload triggers a configuration reload for the agent we are connected to. |
| 362 | func (a *Agent) Reload() error { |
| 363 | r := a.c.newRequest("PUT", "/v1/agent/reload") |
| 364 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 365 | if err != nil { |
| 366 | return err |
| 367 | } |
| 368 | resp.Body.Close() |
| 369 | return nil |
| 370 | } |
| 371 | |
| 372 | // NodeName is used to get the node name of the agent |
| 373 | func (a *Agent) NodeName() (string, error) { |
| 374 | if a.nodeName != "" { |
| 375 | return a.nodeName, nil |
| 376 | } |
| 377 | info, err := a.Self() |
| 378 | if err != nil { |
| 379 | return "", err |
| 380 | } |
| 381 | name := info["Config"]["NodeName"].(string) |
| 382 | a.nodeName = name |
| 383 | return name, nil |
| 384 | } |
| 385 | |
| 386 | // Checks returns the locally registered checks |
| 387 | func (a *Agent) Checks() (map[string]*AgentCheck, error) { |
| 388 | r := a.c.newRequest("GET", "/v1/agent/checks") |
| 389 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 390 | if err != nil { |
| 391 | return nil, err |
| 392 | } |
| 393 | defer resp.Body.Close() |
| 394 | |
| 395 | var out map[string]*AgentCheck |
| 396 | if err := decodeBody(resp, &out); err != nil { |
| 397 | return nil, err |
| 398 | } |
| 399 | return out, nil |
| 400 | } |
| 401 | |
| 402 | // Services returns the locally registered services |
| 403 | func (a *Agent) Services() (map[string]*AgentService, error) { |
| 404 | r := a.c.newRequest("GET", "/v1/agent/services") |
| 405 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 406 | if err != nil { |
| 407 | return nil, err |
| 408 | } |
| 409 | defer resp.Body.Close() |
| 410 | |
| 411 | var out map[string]*AgentService |
| 412 | if err := decodeBody(resp, &out); err != nil { |
| 413 | return nil, err |
| 414 | } |
| 415 | |
| 416 | return out, nil |
| 417 | } |
| 418 | |
| 419 | // AgentHealthServiceByID returns for a given serviceID: the aggregated health status, the service definition or an error if any |
| 420 | // - If the service is not found, will return status (critical, nil, nil) |
| 421 | // - If the service is found, will return (critical|passing|warning), AgentServiceChecksInfo, nil) |
| 422 | // - In all other cases, will return an error |
| 423 | func (a *Agent) AgentHealthServiceByID(serviceID string) (string, *AgentServiceChecksInfo, error) { |
| 424 | path := fmt.Sprintf("/v1/agent/health/service/id/%v", url.PathEscape(serviceID)) |
| 425 | r := a.c.newRequest("GET", path) |
| 426 | r.params.Add("format", "json") |
| 427 | r.header.Set("Accept", "application/json") |
| 428 | _, resp, err := a.c.doRequest(r) |
| 429 | if err != nil { |
| 430 | return "", nil, err |
| 431 | } |
| 432 | defer resp.Body.Close() |
| 433 | // Service not Found |
| 434 | if resp.StatusCode == http.StatusNotFound { |
| 435 | return HealthCritical, nil, nil |
| 436 | } |
| 437 | var out *AgentServiceChecksInfo |
| 438 | if err := decodeBody(resp, &out); err != nil { |
| 439 | return HealthCritical, out, err |
| 440 | } |
| 441 | switch resp.StatusCode { |
| 442 | case http.StatusOK: |
| 443 | return HealthPassing, out, nil |
| 444 | case http.StatusTooManyRequests: |
| 445 | return HealthWarning, out, nil |
| 446 | case http.StatusServiceUnavailable: |
| 447 | return HealthCritical, out, nil |
| 448 | } |
| 449 | return HealthCritical, out, fmt.Errorf("Unexpected Error Code %v for %s", resp.StatusCode, path) |
| 450 | } |
| 451 | |
| 452 | // AgentHealthServiceByName returns for a given service name: the aggregated health status for all services |
| 453 | // having the specified name. |
| 454 | // - If no service is not found, will return status (critical, [], nil) |
| 455 | // - If the service is found, will return (critical|passing|warning), []api.AgentServiceChecksInfo, nil) |
| 456 | // - In all other cases, will return an error |
| 457 | func (a *Agent) AgentHealthServiceByName(service string) (string, []AgentServiceChecksInfo, error) { |
| 458 | path := fmt.Sprintf("/v1/agent/health/service/name/%v", url.PathEscape(service)) |
| 459 | r := a.c.newRequest("GET", path) |
| 460 | r.params.Add("format", "json") |
| 461 | r.header.Set("Accept", "application/json") |
| 462 | _, resp, err := a.c.doRequest(r) |
| 463 | if err != nil { |
| 464 | return "", nil, err |
| 465 | } |
| 466 | defer resp.Body.Close() |
| 467 | // Service not Found |
| 468 | if resp.StatusCode == http.StatusNotFound { |
| 469 | return HealthCritical, nil, nil |
| 470 | } |
| 471 | var out []AgentServiceChecksInfo |
| 472 | if err := decodeBody(resp, &out); err != nil { |
| 473 | return HealthCritical, out, err |
| 474 | } |
| 475 | switch resp.StatusCode { |
| 476 | case http.StatusOK: |
| 477 | return HealthPassing, out, nil |
| 478 | case http.StatusTooManyRequests: |
| 479 | return HealthWarning, out, nil |
| 480 | case http.StatusServiceUnavailable: |
| 481 | return HealthCritical, out, nil |
| 482 | } |
| 483 | return HealthCritical, out, fmt.Errorf("Unexpected Error Code %v for %s", resp.StatusCode, path) |
| 484 | } |
| 485 | |
| 486 | // Service returns a locally registered service instance and allows for |
| 487 | // hash-based blocking. |
| 488 | // |
| 489 | // Note that this uses an unconventional blocking mechanism since it's |
| 490 | // agent-local state. That means there is no persistent raft index so we block |
| 491 | // based on object hash instead. |
| 492 | func (a *Agent) Service(serviceID string, q *QueryOptions) (*AgentService, *QueryMeta, error) { |
| 493 | r := a.c.newRequest("GET", "/v1/agent/service/"+serviceID) |
| 494 | r.setQueryOptions(q) |
| 495 | rtt, resp, err := requireOK(a.c.doRequest(r)) |
| 496 | if err != nil { |
| 497 | return nil, nil, err |
| 498 | } |
| 499 | defer resp.Body.Close() |
| 500 | |
| 501 | qm := &QueryMeta{} |
| 502 | parseQueryMeta(resp, qm) |
| 503 | qm.RequestTime = rtt |
| 504 | |
| 505 | var out *AgentService |
| 506 | if err := decodeBody(resp, &out); err != nil { |
| 507 | return nil, nil, err |
| 508 | } |
| 509 | |
| 510 | return out, qm, nil |
| 511 | } |
| 512 | |
| 513 | // Members returns the known gossip members. The WAN |
| 514 | // flag can be used to query a server for WAN members. |
| 515 | func (a *Agent) Members(wan bool) ([]*AgentMember, error) { |
| 516 | r := a.c.newRequest("GET", "/v1/agent/members") |
| 517 | if wan { |
| 518 | r.params.Set("wan", "1") |
| 519 | } |
| 520 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 521 | if err != nil { |
| 522 | return nil, err |
| 523 | } |
| 524 | defer resp.Body.Close() |
| 525 | |
| 526 | var out []*AgentMember |
| 527 | if err := decodeBody(resp, &out); err != nil { |
| 528 | return nil, err |
| 529 | } |
| 530 | return out, nil |
| 531 | } |
| 532 | |
| 533 | // MembersOpts returns the known gossip members and can be passed |
| 534 | // additional options for WAN/segment filtering. |
| 535 | func (a *Agent) MembersOpts(opts MembersOpts) ([]*AgentMember, error) { |
| 536 | r := a.c.newRequest("GET", "/v1/agent/members") |
| 537 | r.params.Set("segment", opts.Segment) |
| 538 | if opts.WAN { |
| 539 | r.params.Set("wan", "1") |
| 540 | } |
| 541 | |
| 542 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 543 | if err != nil { |
| 544 | return nil, err |
| 545 | } |
| 546 | defer resp.Body.Close() |
| 547 | |
| 548 | var out []*AgentMember |
| 549 | if err := decodeBody(resp, &out); err != nil { |
| 550 | return nil, err |
| 551 | } |
| 552 | return out, nil |
| 553 | } |
| 554 | |
| 555 | // ServiceRegister is used to register a new service with |
| 556 | // the local agent |
| 557 | func (a *Agent) ServiceRegister(service *AgentServiceRegistration) error { |
| 558 | r := a.c.newRequest("PUT", "/v1/agent/service/register") |
| 559 | r.obj = service |
| 560 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 561 | if err != nil { |
| 562 | return err |
| 563 | } |
| 564 | resp.Body.Close() |
| 565 | return nil |
| 566 | } |
| 567 | |
| 568 | // ServiceDeregister is used to deregister a service with |
| 569 | // the local agent |
| 570 | func (a *Agent) ServiceDeregister(serviceID string) error { |
| 571 | r := a.c.newRequest("PUT", "/v1/agent/service/deregister/"+serviceID) |
| 572 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 573 | if err != nil { |
| 574 | return err |
| 575 | } |
| 576 | resp.Body.Close() |
| 577 | return nil |
| 578 | } |
| 579 | |
| 580 | // PassTTL is used to set a TTL check to the passing state. |
| 581 | // |
| 582 | // DEPRECATION NOTICE: This interface is deprecated in favor of UpdateTTL(). |
| 583 | // The client interface will be removed in 0.8 or changed to use |
| 584 | // UpdateTTL()'s endpoint and the server endpoints will be removed in 0.9. |
| 585 | func (a *Agent) PassTTL(checkID, note string) error { |
| 586 | return a.updateTTL(checkID, note, "pass") |
| 587 | } |
| 588 | |
| 589 | // WarnTTL is used to set a TTL check to the warning state. |
| 590 | // |
| 591 | // DEPRECATION NOTICE: This interface is deprecated in favor of UpdateTTL(). |
| 592 | // The client interface will be removed in 0.8 or changed to use |
| 593 | // UpdateTTL()'s endpoint and the server endpoints will be removed in 0.9. |
| 594 | func (a *Agent) WarnTTL(checkID, note string) error { |
| 595 | return a.updateTTL(checkID, note, "warn") |
| 596 | } |
| 597 | |
| 598 | // FailTTL is used to set a TTL check to the failing state. |
| 599 | // |
| 600 | // DEPRECATION NOTICE: This interface is deprecated in favor of UpdateTTL(). |
| 601 | // The client interface will be removed in 0.8 or changed to use |
| 602 | // UpdateTTL()'s endpoint and the server endpoints will be removed in 0.9. |
| 603 | func (a *Agent) FailTTL(checkID, note string) error { |
| 604 | return a.updateTTL(checkID, note, "fail") |
| 605 | } |
| 606 | |
| 607 | // updateTTL is used to update the TTL of a check. This is the internal |
| 608 | // method that uses the old API that's present in Consul versions prior to |
| 609 | // 0.6.4. Since Consul didn't have an analogous "update" API before it seemed |
| 610 | // ok to break this (former) UpdateTTL in favor of the new UpdateTTL below, |
| 611 | // but keep the old Pass/Warn/Fail methods using the old API under the hood. |
| 612 | // |
| 613 | // DEPRECATION NOTICE: This interface is deprecated in favor of UpdateTTL(). |
| 614 | // The client interface will be removed in 0.8 and the server endpoints will |
| 615 | // be removed in 0.9. |
| 616 | func (a *Agent) updateTTL(checkID, note, status string) error { |
| 617 | switch status { |
| 618 | case "pass": |
| 619 | case "warn": |
| 620 | case "fail": |
| 621 | default: |
| 622 | return fmt.Errorf("Invalid status: %s", status) |
| 623 | } |
| 624 | endpoint := fmt.Sprintf("/v1/agent/check/%s/%s", status, checkID) |
| 625 | r := a.c.newRequest("PUT", endpoint) |
| 626 | r.params.Set("note", note) |
| 627 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 628 | if err != nil { |
| 629 | return err |
| 630 | } |
| 631 | resp.Body.Close() |
| 632 | return nil |
| 633 | } |
| 634 | |
| 635 | // checkUpdate is the payload for a PUT for a check update. |
| 636 | type checkUpdate struct { |
| 637 | // Status is one of the api.Health* states: HealthPassing |
| 638 | // ("passing"), HealthWarning ("warning"), or HealthCritical |
| 639 | // ("critical"). |
| 640 | Status string |
| 641 | |
| 642 | // Output is the information to post to the UI for operators as the |
| 643 | // output of the process that decided to hit the TTL check. This is |
| 644 | // different from the note field that's associated with the check |
| 645 | // itself. |
| 646 | Output string |
| 647 | } |
| 648 | |
| 649 | // UpdateTTL is used to update the TTL of a check. This uses the newer API |
| 650 | // that was introduced in Consul 0.6.4 and later. We translate the old status |
| 651 | // strings for compatibility (though a newer version of Consul will still be |
| 652 | // required to use this API). |
| 653 | func (a *Agent) UpdateTTL(checkID, output, status string) error { |
| 654 | switch status { |
| 655 | case "pass", HealthPassing: |
| 656 | status = HealthPassing |
| 657 | case "warn", HealthWarning: |
| 658 | status = HealthWarning |
| 659 | case "fail", HealthCritical: |
| 660 | status = HealthCritical |
| 661 | default: |
| 662 | return fmt.Errorf("Invalid status: %s", status) |
| 663 | } |
| 664 | |
| 665 | endpoint := fmt.Sprintf("/v1/agent/check/update/%s", checkID) |
| 666 | r := a.c.newRequest("PUT", endpoint) |
| 667 | r.obj = &checkUpdate{ |
| 668 | Status: status, |
| 669 | Output: output, |
| 670 | } |
| 671 | |
| 672 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 673 | if err != nil { |
| 674 | return err |
| 675 | } |
| 676 | resp.Body.Close() |
| 677 | return nil |
| 678 | } |
| 679 | |
| 680 | // CheckRegister is used to register a new check with |
| 681 | // the local agent |
| 682 | func (a *Agent) CheckRegister(check *AgentCheckRegistration) error { |
| 683 | r := a.c.newRequest("PUT", "/v1/agent/check/register") |
| 684 | r.obj = check |
| 685 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 686 | if err != nil { |
| 687 | return err |
| 688 | } |
| 689 | resp.Body.Close() |
| 690 | return nil |
| 691 | } |
| 692 | |
| 693 | // CheckDeregister is used to deregister a check with |
| 694 | // the local agent |
| 695 | func (a *Agent) CheckDeregister(checkID string) error { |
| 696 | r := a.c.newRequest("PUT", "/v1/agent/check/deregister/"+checkID) |
| 697 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 698 | if err != nil { |
| 699 | return err |
| 700 | } |
| 701 | resp.Body.Close() |
| 702 | return nil |
| 703 | } |
| 704 | |
| 705 | // Join is used to instruct the agent to attempt a join to |
| 706 | // another cluster member |
| 707 | func (a *Agent) Join(addr string, wan bool) error { |
| 708 | r := a.c.newRequest("PUT", "/v1/agent/join/"+addr) |
| 709 | if wan { |
| 710 | r.params.Set("wan", "1") |
| 711 | } |
| 712 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 713 | if err != nil { |
| 714 | return err |
| 715 | } |
| 716 | resp.Body.Close() |
| 717 | return nil |
| 718 | } |
| 719 | |
| 720 | // Leave is used to have the agent gracefully leave the cluster and shutdown |
| 721 | func (a *Agent) Leave() error { |
| 722 | r := a.c.newRequest("PUT", "/v1/agent/leave") |
| 723 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 724 | if err != nil { |
| 725 | return err |
| 726 | } |
| 727 | resp.Body.Close() |
| 728 | return nil |
| 729 | } |
| 730 | |
| 731 | // ForceLeave is used to have the agent eject a failed node |
| 732 | func (a *Agent) ForceLeave(node string) error { |
| 733 | r := a.c.newRequest("PUT", "/v1/agent/force-leave/"+node) |
| 734 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 735 | if err != nil { |
| 736 | return err |
| 737 | } |
| 738 | resp.Body.Close() |
| 739 | return nil |
| 740 | } |
| 741 | |
| 742 | // ConnectAuthorize is used to authorize an incoming connection |
| 743 | // to a natively integrated Connect service. |
| 744 | func (a *Agent) ConnectAuthorize(auth *AgentAuthorizeParams) (*AgentAuthorize, error) { |
| 745 | r := a.c.newRequest("POST", "/v1/agent/connect/authorize") |
| 746 | r.obj = auth |
| 747 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 748 | if err != nil { |
| 749 | return nil, err |
| 750 | } |
| 751 | defer resp.Body.Close() |
| 752 | |
| 753 | var out AgentAuthorize |
| 754 | if err := decodeBody(resp, &out); err != nil { |
| 755 | return nil, err |
| 756 | } |
| 757 | return &out, nil |
| 758 | } |
| 759 | |
| 760 | // ConnectCARoots returns the list of roots. |
| 761 | func (a *Agent) ConnectCARoots(q *QueryOptions) (*CARootList, *QueryMeta, error) { |
| 762 | r := a.c.newRequest("GET", "/v1/agent/connect/ca/roots") |
| 763 | r.setQueryOptions(q) |
| 764 | rtt, resp, err := requireOK(a.c.doRequest(r)) |
| 765 | if err != nil { |
| 766 | return nil, nil, err |
| 767 | } |
| 768 | defer resp.Body.Close() |
| 769 | |
| 770 | qm := &QueryMeta{} |
| 771 | parseQueryMeta(resp, qm) |
| 772 | qm.RequestTime = rtt |
| 773 | |
| 774 | var out CARootList |
| 775 | if err := decodeBody(resp, &out); err != nil { |
| 776 | return nil, nil, err |
| 777 | } |
| 778 | return &out, qm, nil |
| 779 | } |
| 780 | |
| 781 | // ConnectCALeaf gets the leaf certificate for the given service ID. |
| 782 | func (a *Agent) ConnectCALeaf(serviceID string, q *QueryOptions) (*LeafCert, *QueryMeta, error) { |
| 783 | r := a.c.newRequest("GET", "/v1/agent/connect/ca/leaf/"+serviceID) |
| 784 | r.setQueryOptions(q) |
| 785 | rtt, resp, err := requireOK(a.c.doRequest(r)) |
| 786 | if err != nil { |
| 787 | return nil, nil, err |
| 788 | } |
| 789 | defer resp.Body.Close() |
| 790 | |
| 791 | qm := &QueryMeta{} |
| 792 | parseQueryMeta(resp, qm) |
| 793 | qm.RequestTime = rtt |
| 794 | |
| 795 | var out LeafCert |
| 796 | if err := decodeBody(resp, &out); err != nil { |
| 797 | return nil, nil, err |
| 798 | } |
| 799 | return &out, qm, nil |
| 800 | } |
| 801 | |
| 802 | // ConnectProxyConfig gets the configuration for a local managed proxy instance. |
| 803 | // |
| 804 | // Note that this uses an unconventional blocking mechanism since it's |
| 805 | // agent-local state. That means there is no persistent raft index so we block |
| 806 | // based on object hash instead. |
| 807 | func (a *Agent) ConnectProxyConfig(proxyServiceID string, q *QueryOptions) (*ConnectProxyConfig, *QueryMeta, error) { |
| 808 | r := a.c.newRequest("GET", "/v1/agent/connect/proxy/"+proxyServiceID) |
| 809 | r.setQueryOptions(q) |
| 810 | rtt, resp, err := requireOK(a.c.doRequest(r)) |
| 811 | if err != nil { |
| 812 | return nil, nil, err |
| 813 | } |
| 814 | defer resp.Body.Close() |
| 815 | |
| 816 | qm := &QueryMeta{} |
| 817 | parseQueryMeta(resp, qm) |
| 818 | qm.RequestTime = rtt |
| 819 | |
| 820 | var out ConnectProxyConfig |
| 821 | if err := decodeBody(resp, &out); err != nil { |
| 822 | return nil, nil, err |
| 823 | } |
| 824 | return &out, qm, nil |
| 825 | } |
| 826 | |
| 827 | // EnableServiceMaintenance toggles service maintenance mode on |
| 828 | // for the given service ID. |
| 829 | func (a *Agent) EnableServiceMaintenance(serviceID, reason string) error { |
| 830 | r := a.c.newRequest("PUT", "/v1/agent/service/maintenance/"+serviceID) |
| 831 | r.params.Set("enable", "true") |
| 832 | r.params.Set("reason", reason) |
| 833 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 834 | if err != nil { |
| 835 | return err |
| 836 | } |
| 837 | resp.Body.Close() |
| 838 | return nil |
| 839 | } |
| 840 | |
| 841 | // DisableServiceMaintenance toggles service maintenance mode off |
| 842 | // for the given service ID. |
| 843 | func (a *Agent) DisableServiceMaintenance(serviceID string) error { |
| 844 | r := a.c.newRequest("PUT", "/v1/agent/service/maintenance/"+serviceID) |
| 845 | r.params.Set("enable", "false") |
| 846 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 847 | if err != nil { |
| 848 | return err |
| 849 | } |
| 850 | resp.Body.Close() |
| 851 | return nil |
| 852 | } |
| 853 | |
| 854 | // EnableNodeMaintenance toggles node maintenance mode on for the |
| 855 | // agent we are connected to. |
| 856 | func (a *Agent) EnableNodeMaintenance(reason string) error { |
| 857 | r := a.c.newRequest("PUT", "/v1/agent/maintenance") |
| 858 | r.params.Set("enable", "true") |
| 859 | r.params.Set("reason", reason) |
| 860 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 861 | if err != nil { |
| 862 | return err |
| 863 | } |
| 864 | resp.Body.Close() |
| 865 | return nil |
| 866 | } |
| 867 | |
| 868 | // DisableNodeMaintenance toggles node maintenance mode off for the |
| 869 | // agent we are connected to. |
| 870 | func (a *Agent) DisableNodeMaintenance() error { |
| 871 | r := a.c.newRequest("PUT", "/v1/agent/maintenance") |
| 872 | r.params.Set("enable", "false") |
| 873 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 874 | if err != nil { |
| 875 | return err |
| 876 | } |
| 877 | resp.Body.Close() |
| 878 | return nil |
| 879 | } |
| 880 | |
| 881 | // Monitor returns a channel which will receive streaming logs from the agent |
| 882 | // Providing a non-nil stopCh can be used to close the connection and stop the |
| 883 | // log stream. An empty string will be sent down the given channel when there's |
| 884 | // nothing left to stream, after which the caller should close the stopCh. |
| 885 | func (a *Agent) Monitor(loglevel string, stopCh <-chan struct{}, q *QueryOptions) (chan string, error) { |
| 886 | r := a.c.newRequest("GET", "/v1/agent/monitor") |
| 887 | r.setQueryOptions(q) |
| 888 | if loglevel != "" { |
| 889 | r.params.Add("loglevel", loglevel) |
| 890 | } |
| 891 | _, resp, err := requireOK(a.c.doRequest(r)) |
| 892 | if err != nil { |
| 893 | return nil, err |
| 894 | } |
| 895 | |
| 896 | logCh := make(chan string, 64) |
| 897 | go func() { |
| 898 | defer resp.Body.Close() |
| 899 | |
| 900 | scanner := bufio.NewScanner(resp.Body) |
| 901 | for { |
| 902 | select { |
| 903 | case <-stopCh: |
| 904 | close(logCh) |
| 905 | return |
| 906 | default: |
| 907 | } |
| 908 | if scanner.Scan() { |
| 909 | // An empty string signals to the caller that |
| 910 | // the scan is done, so make sure we only emit |
| 911 | // that when the scanner says it's done, not if |
| 912 | // we happen to ingest an empty line. |
| 913 | if text := scanner.Text(); text != "" { |
| 914 | logCh <- text |
| 915 | } else { |
| 916 | logCh <- " " |
| 917 | } |
| 918 | } else { |
| 919 | logCh <- "" |
| 920 | } |
| 921 | } |
| 922 | }() |
| 923 | |
| 924 | return logCh, nil |
| 925 | } |
| 926 | |
| 927 | // UpdateACLToken updates the agent's "acl_token". See updateToken for more |
| 928 | // details. |
| 929 | // |
| 930 | // DEPRECATED (ACL-Legacy-Compat) - Prefer UpdateDefaultACLToken for v1.4.3 and above |
| 931 | func (a *Agent) UpdateACLToken(token string, q *WriteOptions) (*WriteMeta, error) { |
| 932 | return a.updateToken("acl_token", token, q) |
| 933 | } |
| 934 | |
| 935 | // UpdateACLAgentToken updates the agent's "acl_agent_token". See updateToken |
| 936 | // for more details. |
| 937 | // |
| 938 | // DEPRECATED (ACL-Legacy-Compat) - Prefer UpdateAgentACLToken for v1.4.3 and above |
| 939 | func (a *Agent) UpdateACLAgentToken(token string, q *WriteOptions) (*WriteMeta, error) { |
| 940 | return a.updateToken("acl_agent_token", token, q) |
| 941 | } |
| 942 | |
| 943 | // UpdateACLAgentMasterToken updates the agent's "acl_agent_master_token". See |
| 944 | // updateToken for more details. |
| 945 | // |
| 946 | // DEPRECATED (ACL-Legacy-Compat) - Prefer UpdateAgentMasterACLToken for v1.4.3 and above |
| 947 | func (a *Agent) UpdateACLAgentMasterToken(token string, q *WriteOptions) (*WriteMeta, error) { |
| 948 | return a.updateToken("acl_agent_master_token", token, q) |
| 949 | } |
| 950 | |
| 951 | // UpdateACLReplicationToken updates the agent's "acl_replication_token". See |
| 952 | // updateToken for more details. |
| 953 | // |
| 954 | // DEPRECATED (ACL-Legacy-Compat) - Prefer UpdateReplicationACLToken for v1.4.3 and above |
| 955 | func (a *Agent) UpdateACLReplicationToken(token string, q *WriteOptions) (*WriteMeta, error) { |
| 956 | return a.updateToken("acl_replication_token", token, q) |
| 957 | } |
| 958 | |
| 959 | // UpdateDefaultACLToken updates the agent's "default" token. See updateToken |
| 960 | // for more details |
| 961 | func (a *Agent) UpdateDefaultACLToken(token string, q *WriteOptions) (*WriteMeta, error) { |
| 962 | return a.updateTokenFallback("default", "acl_token", token, q) |
| 963 | } |
| 964 | |
| 965 | // UpdateAgentACLToken updates the agent's "agent" token. See updateToken |
| 966 | // for more details |
| 967 | func (a *Agent) UpdateAgentACLToken(token string, q *WriteOptions) (*WriteMeta, error) { |
| 968 | return a.updateTokenFallback("agent", "acl_agent_token", token, q) |
| 969 | } |
| 970 | |
| 971 | // UpdateAgentMasterACLToken updates the agent's "agent_master" token. See updateToken |
| 972 | // for more details |
| 973 | func (a *Agent) UpdateAgentMasterACLToken(token string, q *WriteOptions) (*WriteMeta, error) { |
| 974 | return a.updateTokenFallback("agent_master", "acl_agent_master_token", token, q) |
| 975 | } |
| 976 | |
| 977 | // UpdateReplicationACLToken updates the agent's "replication" token. See updateToken |
| 978 | // for more details |
| 979 | func (a *Agent) UpdateReplicationACLToken(token string, q *WriteOptions) (*WriteMeta, error) { |
| 980 | return a.updateTokenFallback("replication", "acl_replication_token", token, q) |
| 981 | } |
| 982 | |
| 983 | // updateToken can be used to update one of an agent's ACL tokens after the agent has |
| 984 | // started. The tokens are may not be persisted, so will need to be updated again if |
| 985 | // the agent is restarted unless the agent is configured to persist them. |
| 986 | func (a *Agent) updateToken(target, token string, q *WriteOptions) (*WriteMeta, error) { |
| 987 | meta, _, err := a.updateTokenOnce(target, token, q) |
| 988 | return meta, err |
| 989 | } |
| 990 | |
| 991 | func (a *Agent) updateTokenFallback(target, fallback, token string, q *WriteOptions) (*WriteMeta, error) { |
| 992 | meta, status, err := a.updateTokenOnce(target, token, q) |
| 993 | if err != nil && status == 404 { |
| 994 | meta, _, err = a.updateTokenOnce(fallback, token, q) |
| 995 | } |
| 996 | return meta, err |
| 997 | } |
| 998 | |
| 999 | func (a *Agent) updateTokenOnce(target, token string, q *WriteOptions) (*WriteMeta, int, error) { |
| 1000 | r := a.c.newRequest("PUT", fmt.Sprintf("/v1/agent/token/%s", target)) |
| 1001 | r.setWriteOptions(q) |
| 1002 | r.obj = &AgentToken{Token: token} |
| 1003 | rtt, resp, err := requireOK(a.c.doRequest(r)) |
| 1004 | if err != nil { |
| 1005 | return nil, resp.StatusCode, err |
| 1006 | } |
| 1007 | resp.Body.Close() |
| 1008 | |
| 1009 | wm := &WriteMeta{RequestTime: rtt} |
| 1010 | return wm, resp.StatusCode, nil |
| 1011 | } |