VOL-1867 move simulated olt from voltha-go to voltha-simolt-adapter
Sourced from voltha-go commit 251a11c0ffe60512318a644cd6ce0dc4e12f4018
Change-Id: I8e7ee4da1fed739b3c461917301d2729a79307f5
diff --git a/vendor/github.com/bsm/sarama-cluster/config.go b/vendor/github.com/bsm/sarama-cluster/config.go
new file mode 100644
index 0000000..084b835
--- /dev/null
+++ b/vendor/github.com/bsm/sarama-cluster/config.go
@@ -0,0 +1,146 @@
+package cluster
+
+import (
+ "regexp"
+ "time"
+
+ "github.com/Shopify/sarama"
+)
+
+var minVersion = sarama.V0_9_0_0
+
+type ConsumerMode uint8
+
+const (
+ ConsumerModeMultiplex ConsumerMode = iota
+ ConsumerModePartitions
+)
+
+// Config extends sarama.Config with Group specific namespace
+type Config struct {
+ sarama.Config
+
+ // Group is the namespace for group management properties
+ Group struct {
+
+ // The strategy to use for the allocation of partitions to consumers (defaults to StrategyRange)
+ PartitionStrategy Strategy
+
+ // By default, messages and errors from the subscribed topics and partitions are all multiplexed and
+ // made available through the consumer's Messages() and Errors() channels.
+ //
+ // Users who require low-level access can enable ConsumerModePartitions where individual partitions
+ // are exposed on the Partitions() channel. Messages and errors must then be consumed on the partitions
+ // themselves.
+ Mode ConsumerMode
+
+ Offsets struct {
+ Retry struct {
+ // The numer retries when committing offsets (defaults to 3).
+ Max int
+ }
+ Synchronization struct {
+ // The duration allowed for other clients to commit their offsets before resumption in this client, e.g. during a rebalance
+ // NewConfig sets this to the Consumer.MaxProcessingTime duration of the Sarama configuration
+ DwellTime time.Duration
+ }
+ }
+
+ Session struct {
+ // The allowed session timeout for registered consumers (defaults to 30s).
+ // Must be within the allowed server range.
+ Timeout time.Duration
+ }
+
+ Heartbeat struct {
+ // Interval between each heartbeat (defaults to 3s). It should be no more
+ // than 1/3rd of the Group.Session.Timout setting
+ Interval time.Duration
+ }
+
+ // Return specifies which group channels will be populated. If they are set to true,
+ // you must read from the respective channels to prevent deadlock.
+ Return struct {
+ // If enabled, rebalance notification will be returned on the
+ // Notifications channel (default disabled).
+ Notifications bool
+ }
+
+ Topics struct {
+ // An additional whitelist of topics to subscribe to.
+ Whitelist *regexp.Regexp
+ // An additional blacklist of topics to avoid. If set, this will precede over
+ // the Whitelist setting.
+ Blacklist *regexp.Regexp
+ }
+
+ Member struct {
+ // Custom metadata to include when joining the group. The user data for all joined members
+ // can be retrieved by sending a DescribeGroupRequest to the broker that is the
+ // coordinator for the group.
+ UserData []byte
+ }
+ }
+}
+
+// NewConfig returns a new configuration instance with sane defaults.
+func NewConfig() *Config {
+ c := &Config{
+ Config: *sarama.NewConfig(),
+ }
+ c.Group.PartitionStrategy = StrategyRange
+ c.Group.Offsets.Retry.Max = 3
+ c.Group.Offsets.Synchronization.DwellTime = c.Consumer.MaxProcessingTime
+ c.Group.Session.Timeout = 30 * time.Second
+ c.Group.Heartbeat.Interval = 3 * time.Second
+ c.Config.Version = minVersion
+ return c
+}
+
+// Validate checks a Config instance. It will return a
+// sarama.ConfigurationError if the specified values don't make sense.
+func (c *Config) Validate() error {
+ if c.Group.Heartbeat.Interval%time.Millisecond != 0 {
+ sarama.Logger.Println("Group.Heartbeat.Interval only supports millisecond precision; nanoseconds will be truncated.")
+ }
+ if c.Group.Session.Timeout%time.Millisecond != 0 {
+ sarama.Logger.Println("Group.Session.Timeout only supports millisecond precision; nanoseconds will be truncated.")
+ }
+ if c.Group.PartitionStrategy != StrategyRange && c.Group.PartitionStrategy != StrategyRoundRobin {
+ sarama.Logger.Println("Group.PartitionStrategy is not supported; range will be assumed.")
+ }
+ if !c.Version.IsAtLeast(minVersion) {
+ sarama.Logger.Println("Version is not supported; 0.9. will be assumed.")
+ c.Version = minVersion
+ }
+ if err := c.Config.Validate(); err != nil {
+ return err
+ }
+
+ // validate the Group values
+ switch {
+ case c.Group.Offsets.Retry.Max < 0:
+ return sarama.ConfigurationError("Group.Offsets.Retry.Max must be >= 0")
+ case c.Group.Offsets.Synchronization.DwellTime <= 0:
+ return sarama.ConfigurationError("Group.Offsets.Synchronization.DwellTime must be > 0")
+ case c.Group.Offsets.Synchronization.DwellTime > 10*time.Minute:
+ return sarama.ConfigurationError("Group.Offsets.Synchronization.DwellTime must be <= 10m")
+ case c.Group.Heartbeat.Interval <= 0:
+ return sarama.ConfigurationError("Group.Heartbeat.Interval must be > 0")
+ case c.Group.Session.Timeout <= 0:
+ return sarama.ConfigurationError("Group.Session.Timeout must be > 0")
+ case !c.Metadata.Full && c.Group.Topics.Whitelist != nil:
+ return sarama.ConfigurationError("Metadata.Full must be enabled when Group.Topics.Whitelist is used")
+ case !c.Metadata.Full && c.Group.Topics.Blacklist != nil:
+ return sarama.ConfigurationError("Metadata.Full must be enabled when Group.Topics.Blacklist is used")
+ }
+
+ // ensure offset is correct
+ switch c.Consumer.Offsets.Initial {
+ case sarama.OffsetOldest, sarama.OffsetNewest:
+ default:
+ return sarama.ConfigurationError("Consumer.Offsets.Initial must be either OffsetOldest or OffsetNewest")
+ }
+
+ return nil
+}