Class: Logster::RedisStore
Instance Attribute Summary collapse
Attributes inherited from BaseStore
#ignore, #level, #max_retention, #skip_empty
Instance Method Summary
collapse
Methods inherited from BaseStore
#report
Constructor Details
#initialize(redis = nil) ⇒ RedisStore
Returns a new instance of RedisStore.
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# File 'lib/logster/redis_store.rb', line 9
def initialize(redis = nil)
super()
@redis = redis || Redis.new
@max_backlog = 1000
end
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Instance Attribute Details
#max_backlog ⇒ Object
Returns the value of attribute max_backlog.
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# File 'lib/logster/redis_store.rb', line 7
def max_backlog
@max_backlog
end
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#redis ⇒ Object
Returns the value of attribute redis.
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# File 'lib/logster/redis_store.rb', line 7
def redis
@redis
end
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Instance Method Details
#clear ⇒ Object
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# File 'lib/logster/redis_store.rb', line 81
def clear
@redis.del(list_key)
keys = @redis.smembers(protected_key) || []
if keys.empty?
@redis.del(hash_key)
else
protected = @redis.mapped_hmget(hash_key, *keys)
@redis.del(hash_key)
@redis.mapped_hmset(hash_key, protected)
sorted = protected
.values
.map { |string| Message.from_json(string) }
.sort
.map(&:key)
@redis.pipelined do
sorted.each do |message_key|
@redis.rpush(list_key, message_key)
end
end
end
end
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#clear_all ⇒ Object
Delete everything, included protected messages (use in tests)
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# File 'lib/logster/redis_store.rb', line 107
def clear_all
@redis.del(list_key)
@redis.del(protected_key)
@redis.del(hash_key)
end
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#count ⇒ Object
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# File 'lib/logster/redis_store.rb', line 31
def count
@redis.llen(list_key)
end
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#get(message_key) ⇒ Object
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# File 'lib/logster/redis_store.rb', line 113
def get(message_key)
json = @redis.hget(hash_key, message_key)
return nil unless json
message = Message.from_json(json)
message.protected = @redis.sismember(protected_key, message_key)
message
end
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#latest(opts = {}) ⇒ Object
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# File 'lib/logster/redis_store.rb', line 35
def latest(opts={})
limit = opts[:limit] || 50
severity = opts[:severity]
before = opts[:before]
after = opts[:after]
search = opts[:search]
start, finish = find_location(before, after, limit)
return [] unless start && finish
results = []
direction = after ? 1 : -1
begin
keys = @redis.lrange(list_key, start, finish) || []
break unless keys and keys.count > 0
rows = @redis.hmget(hash_key, keys)
temp = []
rows.each do |s|
row = Message.from_json(s)
break if before && before == row.key
row = nil if severity && !severity.include?(row.severity)
row = filter_search(row, search)
temp << row if row
end
if direction == -1
results = temp + results
else
results += temp
end
start += limit * direction
finish += limit * direction
finish = -1 if finish > -1
end while rows.length > 0 && results.length < limit && start < 0
results
end
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#protect(message_key) ⇒ Object
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# File 'lib/logster/redis_store.rb', line 122
def protect(message_key)
json = @redis.hget(hash_key, message_key)
return false unless json
@redis.sadd(protected_key, message_key)
true
end
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#save(message) ⇒ Object
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# File 'lib/logster/redis_store.rb', line 15
def save(message)
@redis.multi do
@redis.hset(hash_key, message.key, message.to_json)
@redis.rpush(list_key, message.key)
end
if @redis.llen(list_key) > max_backlog
removed_key = @redis.lpop(list_key)
if removed_key && !@redis.sismember(protected_key, removed_key)
@redis.hdel(hash_key, removed_key)
end
end
end
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#unprotect(message_key) ⇒ Object
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# File 'lib/logster/redis_store.rb', line 132
def unprotect(message_key)
value = @redis.hget(hash_key, message_key)
raise "Message already deleted?" unless value
@redis.srem(protected_key, message_key)
index = find_message(list_key, message_key)
if index == nil
@redis.hdel(hash_key, message_key)
end
true
end
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