diff options
Diffstat (limited to 'src/core/ext/lb_policy/pick_first/pick_first.c')
| -rw-r--r-- | src/core/ext/lb_policy/pick_first/pick_first.c | 54 |
1 files changed, 40 insertions, 14 deletions
diff --git a/src/core/ext/lb_policy/pick_first/pick_first.c b/src/core/ext/lb_policy/pick_first/pick_first.c index cb5c40501e..43197c1191 100644 --- a/src/core/ext/lb_policy/pick_first/pick_first.c +++ b/src/core/ext/lb_policy/pick_first/pick_first.c @@ -40,6 +40,7 @@ typedef struct pending_pick { struct pending_pick *next; grpc_pollset *pollset; + uint32_t initial_metadata_flags; grpc_connected_subchannel **target; grpc_closure *on_complete; } pending_pick; @@ -149,6 +150,31 @@ static void pf_cancel_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol, gpr_mu_unlock(&p->mu); } +static void pf_cancel_picks(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol, + uint32_t initial_metadata_flags_mask, + uint32_t initial_metadata_flags_eq) { + pick_first_lb_policy *p = (pick_first_lb_policy *)pol; + pending_pick *pp; + gpr_mu_lock(&p->mu); + pp = p->pending_picks; + p->pending_picks = NULL; + while (pp != NULL) { + pending_pick *next = pp->next; + if ((pp->initial_metadata_flags & initial_metadata_flags_mask) == + initial_metadata_flags_eq) { + grpc_pollset_set_del_pollset(exec_ctx, p->base.interested_parties, + pp->pollset); + grpc_exec_ctx_enqueue(exec_ctx, pp->on_complete, false, NULL); + gpr_free(pp); + } else { + pp->next = p->pending_picks; + p->pending_picks = pp; + } + pp = next; + } + gpr_mu_unlock(&p->mu); +} + static void start_picking(grpc_exec_ctx *exec_ctx, pick_first_lb_policy *p) { p->started_picking = 1; p->checking_subchannel = 0; @@ -171,6 +197,7 @@ static void pf_exit_idle(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) { static int pf_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol, grpc_pollset *pollset, grpc_metadata_batch *initial_metadata, + uint32_t initial_metadata_flags, grpc_connected_subchannel **target, grpc_closure *on_complete) { pick_first_lb_policy *p = (pick_first_lb_policy *)pol; @@ -199,6 +226,7 @@ static int pf_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol, pp->next = p->pending_picks; pp->pollset = pollset; pp->target = target; + pp->initial_metadata_flags = initial_metadata_flags; pp->on_complete = on_complete; p->pending_picks = pp; gpr_mu_unlock(&p->mu); @@ -286,11 +314,14 @@ static void pf_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg, &p->checking_connectivity, &p->connectivity_changed); break; case GRPC_CHANNEL_TRANSIENT_FAILURE: - grpc_connectivity_state_set(exec_ctx, &p->state_tracker, - GRPC_CHANNEL_TRANSIENT_FAILURE, - "connecting_transient_failure"); p->checking_subchannel = (p->checking_subchannel + 1) % p->num_subchannels; + if (p->checking_subchannel == 0) { + /* only trigger transient failure when we've tried all alternatives */ + grpc_connectivity_state_set(exec_ctx, &p->state_tracker, + GRPC_CHANNEL_TRANSIENT_FAILURE, + "connecting_transient_failure"); + } p->checking_connectivity = grpc_subchannel_check_connectivity( p->subchannels[p->checking_subchannel]); if (p->checking_connectivity == GRPC_CHANNEL_TRANSIENT_FAILURE) { @@ -378,14 +409,9 @@ static void pf_ping_one(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol, } static const grpc_lb_policy_vtable pick_first_lb_policy_vtable = { - pf_destroy, - pf_shutdown, - pf_pick, - pf_cancel_pick, - pf_ping_one, - pf_exit_idle, - pf_check_connectivity, - pf_notify_on_state_change}; + pf_destroy, pf_shutdown, pf_pick, + pf_cancel_pick, pf_cancel_picks, pf_ping_one, + pf_exit_idle, pf_check_connectivity, pf_notify_on_state_change}; static void pick_first_factory_ref(grpc_lb_policy_factory *factory) {} @@ -395,7 +421,7 @@ static grpc_lb_policy *create_pick_first(grpc_exec_ctx *exec_ctx, grpc_lb_policy_factory *factory, grpc_lb_policy_args *args) { GPR_ASSERT(args->addresses != NULL); - GPR_ASSERT(args->subchannel_factory != NULL); + GPR_ASSERT(args->client_channel_factory != NULL); if (args->addresses->naddrs == 0) return NULL; @@ -412,8 +438,8 @@ static grpc_lb_policy *create_pick_first(grpc_exec_ctx *exec_ctx, sc_args.addr = (struct sockaddr *)(args->addresses->addrs[i].addr); sc_args.addr_len = (size_t)args->addresses->addrs[i].len; - grpc_subchannel *subchannel = grpc_subchannel_factory_create_subchannel( - exec_ctx, args->subchannel_factory, &sc_args); + grpc_subchannel *subchannel = grpc_client_channel_factory_create_subchannel( + exec_ctx, args->client_channel_factory, &sc_args); if (subchannel != NULL) { p->subchannels[subchannel_idx++] = subchannel; |