This is a traveling cobbler at work with a customer in an alleyway.
A cobbler is called 'tukang sol sepatu' here. A traveling cobbler usually travels from place to place shouting "sol patu!" touting the service he's offering. A customer who needs his/her shoes or sandals repaired would then halt him and both negotiate the fee for the work that needs to be done.
Most traveling cobblers in this city come from Garut, a regency about 60 kilometers to the southeast of Bandung.