83 lines
3.9 KiB
Go
83 lines
3.9 KiB
Go
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package tailsampler
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import "time"
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type PolicyType string
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type Config struct {
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DecisionWait time.Duration `mapstructure:"decision_wait" yaml:"decision_wait"`
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NumTraces uint64 `mapstructure:"num_traces" yaml:"num_traces"`
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ExpectedNewTracesPerSec uint64 `mapstructure:"expected_new_traces_per_sec" yaml:"expected_new_traces_per_sec"`
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PolicyCfgs []PolicyCfg `mapstructure:"policies" yaml:"policies"`
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// read only version number (optional)
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Version int
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}
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type ProbabilisticCfg struct {
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// HashSalt allows one to configure the hashing salts. This is important in scenarios where multiple layers of collectors
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// have different sampling rates: if they use the same salt all passing one layer may pass the other even if they have
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// different sampling rates, configuring different salts avoids that.
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HashSalt string `mapstructure:"hash_salt" yaml:"hash_salt"`
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// SamplingPercentage is the percentage rate at which traces are going to be sampled. Defaults to zero, i.e.: no sample.
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// Values greater or equal 100 are treated as "sample all traces".
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SamplingPercentage float64 `mapstructure:"sampling_percentage" yaml:"sampling_percentage"`
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}
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type NumericAttributeCfg struct {
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// Tag that the filter is going to be matching against.
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Key string `mapstructure:"key" yaml:"key"`
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// MinValue is the minimum value of the attribute to be considered a match.
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MinValue int64 `mapstructure:"min_value" yaml:"min_value"`
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// MaxValue is the maximum value of the attribute to be considered a match.
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MaxValue int64 `mapstructure:"max_value" yaml:"max_value"`
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}
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type StringAttributeCfg struct {
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// Tag that the filter is going to be matching against.
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Key string `mapstructure:"key" yaml:"key"`
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// Values indicate the set of values or regular expressions to use when matching against attribute values.
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// StringAttribute Policy will apply exact value match on Values unless EnabledRegexMatching is true.
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Values []string `mapstructure:"values" yaml:"values"`
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// EnabledRegexMatching determines whether match attribute values by regexp string.
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EnabledRegexMatching bool `mapstructure:"enabled_regex_matching" yaml:"enabled_regex_matching"`
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// CacheMaxSize is the maximum number of attribute entries of LRU Cache that stores the matched result
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// from the regular expressions defined in Values.
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// CacheMaxSize will not be used if EnabledRegexMatching is set to false.
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CacheMaxSize int `mapstructure:"cache_max_size" yaml:"cache_max_size"`
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// InvertMatch indicates that values or regular expressions must not match against attribute values.
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// If InvertMatch is true and Values is equal to 'acme', all other values will be sampled except 'acme'.
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// Also, if the specified Key does not match on any resource or span attributes, data will be sampled.
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InvertMatch bool `mapstructure:"invert_match" yaml:"invert_match"`
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}
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type PolicyFilterCfg struct {
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// values: AND | OR
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FilterOp string `mapstructure:"filter_op" yaml:"filter_op"`
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StringAttributeCfgs []StringAttributeCfg `mapstructure:"string_attributes" yaml:"string_attributes"`
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NumericAttributeCfgs []NumericAttributeCfg `mapstructure:"numeric_attributes" yaml:"numeric_attributes"`
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}
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// PolicyCfg identifies policy rules in policy group
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type PolicyCfg struct {
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// name of the policy
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Name string `mapstructure:"name" yaml:"name"`
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// Type of the policy this will be used to match the proper configuration of the policy.
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Type PolicyType `mapstructure:"type" yaml:"type"`
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// Set to true for sampling rule (root) and false for conditions
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Root bool `mapstructure:"root" yaml:"root"`
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Priority int `mapstructure:"priority" yaml:"priority"`
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// sampling applied when PolicyFilter matches
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ProbabilisticCfg `mapstructure:",squash" yaml:"sampling"`
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// filter to activate policy
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PolicyFilterCfg `mapstructure:",squash" yaml:"policy_filter"`
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SubPolicies []PolicyCfg `mapstructure:"sub_policies" yaml:"sub_policies"`
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}
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