Module: NewRelic::Agent::Database
- Extended by:
- Database
- Included in:
- Database
- Defined in:
- lib/new_relic/agent/database.rb
Defined Under Namespace
Classes: ConnectionManager, Obfuscator, Statement
Instance Method Summary
collapse
Instance Method Details
#close_connections ⇒ Object
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# File 'lib/new_relic/agent/database.rb', line 49
def close_connections
ConnectionManager.instance.close_connections
end
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#explain_sql(sql, connection_config) ⇒ Object
Perform this in the runtime environment of a managed application, to explain the sql statement executed within a segment of a transaction sample. Returns an array of explanations (which is an array rows consisting of an array of strings for each column returned by the the explain query) Note this happens only for statements whose execution time exceeds a threshold (e.g. 500ms) and only within the slowest transaction in a report period, selected for shipment to New Relic
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# File 'lib/new_relic/agent/database.rb', line 62
def explain_sql(sql, connection_config)
return nil unless sql && connection_config
statement = sql.split(";\n")[0] explain_sql = explain_statement(statement, connection_config)
return explain_sql || []
end
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#explain_statement(statement, config) ⇒ Object
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# File 'lib/new_relic/agent/database.rb', line 69
def explain_statement(statement, config)
if is_select?(statement)
handle_exception_in_explain do
connection = get_connection(config)
plan = nil
if connection
plan = process_resultset(connection.execute("EXPLAIN #{statement}"))
end
return plan
end
end
end
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#get_connection(config) ⇒ Object
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# File 'lib/new_relic/agent/database.rb', line 45
def get_connection(config)
ConnectionManager.instance.get_connection(config)
end
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#handle_exception_in_explain ⇒ Object
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# File 'lib/new_relic/agent/database.rb', line 111
def handle_exception_in_explain
yield
rescue => e
begin
NewRelic::Control.instance.log.error("Error getting query plan: #{e.message}")
NewRelic::Control.instance.log.debug(e.backtrace.join("\n"))
rescue
end
end
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#is_select?(statement) ⇒ Boolean
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# File 'lib/new_relic/agent/database.rb', line 123
def is_select?(statement)
first_word, rest_of_statement = statement.split($;, 2)
(first_word.upcase == 'SELECT')
end
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#obfuscate_sql(sql) ⇒ Object
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# File 'lib/new_relic/agent/database.rb', line 22
def obfuscate_sql(sql)
Obfuscator.instance.obfuscator.call(sql)
end
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#process_resultset(items) ⇒ Object
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# File 'lib/new_relic/agent/database.rb', line 82
def process_resultset(items)
= []
values = []
if items.respond_to?(:each_hash)
items.each_hash do |row|
= row.keys
values << .map{|h| row[h] }
end
elsif items.respond_to?(:each)
items.each do |row|
if row.kind_of?(Hash)
= row.keys
values << .map{|h| row[h] }
else
values << row
end
end
else
values = [items]
end
= nil if .empty?
[, values]
end
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#record_sql_method ⇒ Object
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# File 'lib/new_relic/agent/database.rb', line 30
def record_sql_method
case Agent.config[:'transaction_tracer.record_sql'].to_s
when 'off'
:off
when 'none'
:off
when 'false'
:off
when 'raw'
:raw
else
:obfuscated
end
end
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#set_sql_obfuscator(type, &block) ⇒ Object
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# File 'lib/new_relic/agent/database.rb', line 26
def set_sql_obfuscator(type, &block)
Obfuscator.instance.set_sql_obfuscator(type, &block)
end
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