  We study theoretically the transport of linearly polarized exciton-polaritons
in a quasi one-dimensional microcavity channel separating two polariton
condensates generated by optical pumping. The direction and value of mass and
spin currents are controlled by the relative phase and polarisation of two
condensates, as in the stationary Josephson effect. However, due to dissipation
and particle-particle interactions, the current denisty is inhomogeneous: it
strongly depends on the coordinate along the axis of the channel. A stationary
spin domain can be created in the channel, its position would be sensitive to
the phase difference between two bordering condensates.
