Wrapper for os.Getenv (may trigger log.Fatal if value is empty or is not valid integer).

Using os.Getenv, get map of key=value strings from environment.

Wrapper for os.Getenv (may trigger log.Fatal if value is empty).

NewClientFromConfig creates client connection from environmental config (or custom config source) Config is read using key=value; pairs in key GRPC_SERVER_serviceName" value: A string must begin with first argument with no value (single string) Key-value pairs are separated with ';' Example: "test;key1=value;key2=other value;" serviceName: locates config values by key "GRPC_SERVICE_serviceName globalConfig: config map, from where to read the string.

Makes new Queue (unintialized) Without Initialize, Enqueue takes up to to [backlog] operations before blocked.

Example: "test;key1=value;key2=other value;" serverName: locates config values by key "GRPC_SERVER_serviceName globalConfig: config map, from where to read the string.

ParseConfstr splits value of a variable by key=value; pairs.

EnvVarsConfig should be used to indicate config variable containing settings for must be read by ParseConfstr() from os.Environ.

JobQueue is synchronous operations pool used to ensure that at a given time moment only one database read/write operation is exec.

Context passed to the operation func will tell it is cancelled if queue is stopping.