package consulutil
import (
"time"
"github.com/Sirupsen/logrus"
"github.com/hashicorp/consul/api"
"github.com/square/p2/pkg/logging"
"github.com/square/p2/pkg/util/param"
)
// SessionRetrySeconds specifies how long to wait between retries when establishing a
// session to Consul.
var SessionRetrySeconds = param.Int("session_retry_seconds", 5)
// SessionManager continually creates and maintains Consul sessions. It is intended to be
// run in its own goroutine. If one session expires, a new one will be created. As
// sessions come and go, the session ID (or "" for an expired session) will be sent on the
// output channel.
//
// Parameters:
// config: Configuration passed to Consul when creating a new session.
// client: The Consul client to use.
// output: The channel used for exposing Consul session IDs. This method takes
// ownership of this channel and will close it once no new IDs will be created.
// done: Close this channel to close the current session (if any) and stop creating
// new sessions.
// logger: Errors will be logged to this logger.
func SessionManager(
config api.SessionEntry,
"github.com/square/p2/pkg/manifest"
"github.com/square/p2/pkg/pods"
"github.com/square/p2/pkg/rc"
"github.com/square/p2/pkg/types"
"github.com/square/p2/pkg/util"
"github.com/square/p2/pkg/util/param"
"github.com/Sirupsen/logrus"
)
type Labeler interface {
GetLabels(labelType labels.Type, id string) (labels.Labeled, error)
}
var (
ensureRealityPeriodMillis = param.Int("ensure_in_reality_millis", 5000)
ensureHealthyPeriodMillis = param.Int("ensure_healthy_millis", 1000)
)
type nodeUpdated struct {
node types.NodeName
err error
}
type replicationError struct {
err error
// Indicates if the error halted replication or if it is recoverable
isFatal bool
}
// Assert that replicationError implements the error interface
"github.com/Sirupsen/logrus"
"github.com/hashicorp/consul/api"
"github.com/square/p2/pkg/health"
"github.com/square/p2/pkg/kp/consulutil"
"github.com/square/p2/pkg/logging"
"github.com/square/p2/pkg/types"
"github.com/square/p2/pkg/util/limit"
"github.com/square/p2/pkg/util/param"
"github.com/square/p2/pkg/util/stream"
)
var (
// HealthRetryTimeSec determines how long to wait between retries when a health check
// fails to write.
HealthRetryTimeSec = param.Int("health_retry_time_sec", 5)
// SessionTTLSec sets the TTL time for each session created by consulHealthManager. This
// parameter controls how long it takes for clients to notice that health checks have
// stopped.
SessionTTLSec = param.Int("health_session_ttl_sec", 15)
// HealthWritesPerMinute sets the average number of writes per minute per service that
// will be sent to Consul to update health.
HealthWritesPerMinute = param.Int("health_writes_per_minute", 4)
// HealthMaxBucketSize sets the maximum token bucket size per service used to
// rate-limit Consul writes.
HealthMaxBucketSize = param.Int64("health_max_bucket_size", 16)
// HealthResumeLimit sets the lower bound on the number of tokens at which updates will
import (
"time"
"github.com/Sirupsen/logrus"
"github.com/hashicorp/consul/api"
"github.com/square/p2/pkg/logging"
"github.com/square/p2/pkg/util/param"
"github.com/square/p2/pkg/util/randseed"
)
// SessionRetrySeconds specifies the base time to wait between retries when establishing a
// session. In the presence of errors, the effective time is derived from this base
// following a strategy of exponential backoff with jitter.
var SessionRetrySeconds = param.Int("session_retry_seconds", 10)
// SessionMaxRetrySeconds is the maximum number of seconds to wait between failed
// attempts to acquire a session.
var SessionMaxRetrySeconds = param.Int("session_max_retry_seconds", 300)
// SessionManager continually creates and maintains Consul sessions. It is intended to be
// run in its own goroutine. If one session expires, a new one will be created. As
// sessions come and go, the session ID (or "" for an expired session) will be sent on the
// output channel.
//
// Parameters:
// config: Configuration passed to Consul when creating a new session.
// client: The Consul client to use.
// output: The channel used for exposing Consul session IDs. This method takes
// ownership of this channel and will close it once no new IDs will be created.