Class: Logster::RedisStore

Inherits:
BaseStore show all
Defined in:
lib/logster/redis_store.rb

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.



117
118
119
120
121
 
# File 'lib/logster/redis_store.rb', line 117

def initialize(redis = nil)
  super()
  @redis = redis || Redis.new
  @max_backlog = 1000
end

Instance Attribute Details

#max_backlog ⇒ Object

Returns the value of attribute max_backlog.



114
115
116
 
# File 'lib/logster/redis_store.rb', line 114

def max_backlog
  @max_backlog
end

#redis ⇒ Object

Returns the value of attribute redis.



114
115
116
 
# File 'lib/logster/redis_store.rb', line 114

def redis
  @redis
end

#redis_prefix ⇒ Object 



305
306
307
308
309
 
# File 'lib/logster/redis_store.rb', line 305

def redis_prefix
  return 'default'.freeze if !@redis_prefix
  @prefix_is_proc ||= @redis_prefix.respond_to?(:call)
  @prefix_is_proc ? @redis_prefix.call : @redis_prefix
end

#redis_raw_connection ⇒ Object

Returns the value of attribute redis_raw_connection.



114
115
116
 
# File 'lib/logster/redis_store.rb', line 114

def redis_raw_connection
  @redis_raw_connection
end

Instance Method Details

#clear ⇒ Object 



231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
 
# File 'lib/logster/redis_store.rb', line 231

def clear
  RedisRateLimiter.clear_all(@redis)
  @redis.del(solved_key)
  @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) rescue nil
      }
      .compact
      .sort
      .map(&:key)

    @redis.pipelined do
      sorted.each do |message_key|
        @redis.rpush(list_key, message_key)
      end
    end
  end
end

#clear_all ⇒ Object

Delete everything, included protected messages (use in tests)



262
263
264
265
266
267
268
 
# File 'lib/logster/redis_store.rb', line 262

def clear_all
  @redis.del(list_key)
  @redis.del(protected_key)
  @redis.del(hash_key)
  @redis.del(grouping_key)
  @redis.del(solved_key)
end

#count ⇒ Object 



171
172
173
 
# File 'lib/logster/redis_store.rb', line 171

def count
  @redis.llen(list_key)
end

#delete(msg) ⇒ Object 



143
144
145
146
147
148
149
 
# File 'lib/logster/redis_store.rb', line 143

def delete(msg)
  @redis.multi do
    @redis.hdel(hash_key, msg.key)
    @redis.hdel(grouping_key, msg.grouping_key)
    @redis.lrem(list_key, -1, msg.key)
  end
end

#get(message_key) ⇒ Object 



270
271
272
273
274
275
 
# File 'lib/logster/redis_store.rb', line 270

def get(message_key)
  json = @redis.hget(hash_key, message_key)
  return nil unless json

  Message.from_json(json)
end

#latest(opts = {}) ⇒ Object 



185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
 
# File 'lib/logster/redis_store.rb', line 185

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

#protect(message_key) ⇒ Object 



277
278
279
280
281
282
 
# File 'lib/logster/redis_store.rb', line 277

def protect(message_key)
  if message = get(message_key)
    message.protected = true
    update_message(message)
  end
end

#rate_limits ⇒ Object 



311
312
313
 
# File 'lib/logster/redis_store.rb', line 311

def rate_limits
  @rate_limits ||= {}
end

#register_rate_limit_per_hour(severities, limit, &block) ⇒ Object 



301
302
303
 
# File 'lib/logster/redis_store.rb', line 301

def register_rate_limit_per_hour(severities, limit, &block)
  register_rate_limit(severities, limit, 3600, block)
end

#register_rate_limit_per_minute(severities, limit, &block) ⇒ Object 



297
298
299
 
# File 'lib/logster/redis_store.rb', line 297

def register_rate_limit_per_minute(severities, limit, &block)
  register_rate_limit(severities, limit, 60, block)
end

#replace_and_bump(message) ⇒ Object 



151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
 
# File 'lib/logster/redis_store.rb', line 151

def replace_and_bump(message)
  # TODO make it atomic
  exists = @redis.hexists(hash_key, message.key)
  return false unless exists

  @redis.multi do
    @redis.hset(hash_key, message.key, message.to_json)
    @redis.lrem(list_key, -1, message.key)
    @redis.rpush(list_key, message.key)
  end

  check_rate_limits(message.severity)

  true
end

#save(message) ⇒ Object 



124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
 
# File 'lib/logster/redis_store.rb', line 124

def save(message)
  if keys=message.solved_keys
    keys.each do |solved|
      return true if @redis.hget(solved_key, solved)
    end
  end

  @redis.multi do
    @redis.hset(grouping_key, message.grouping_key, message.key)
    @redis.rpush(list_key, message.key)
    update_message(message)
  end

  trim
  check_rate_limits(message.severity)

  true
end

#similar_key(message) ⇒ Object 



167
168
169
 
# File 'lib/logster/redis_store.rb', line 167

def similar_key(message)
  @redis.hget(grouping_key, message.grouping_key)
end

#solve(message_key) ⇒ Object 



175
176
177
178
179
180
181
182
183
 
# File 'lib/logster/redis_store.rb', line 175

def solve(message_key)
  if (message = get(message_key)) && (keys = message.solved_keys)
    # add a time so we can expire it
    keys.each do |s_key|
      @redis.hset(solved_key, s_key, Time.now.to_f.to_i)
    end
  end
  clear_solved
end

#solved ⇒ Object 



293
294
295
 
# File 'lib/logster/redis_store.rb', line 293

def solved
  @redis.hkeys(solved_key) || []
end

#unprotect(message_key) ⇒ Object 



284
285
286
287
288
289
290
291
 
# File 'lib/logster/redis_store.rb', line 284

def unprotect(message_key)
  if message = get(message_key)
    message.protected = false
    update_message(message)
  else
    raise "Message already deleted"
  end
end