resolver.h

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#ifndef GRPC_INTERNAL_CORE_CLIENT_CONFIG_RESOLVER_H
#define GRPC_INTERNAL_CORE_CLIENT_CONFIG_RESOLVER_H

#include "src/core/client_config/client_config.h"
#include "src/core/iomgr/iomgr.h"
#include "src/core/iomgr/sockaddr.h"

typedef struct grpc_resolver grpc_resolver;
typedef struct grpc_resolver_vtable grpc_resolver_vtable;

struct grpc_resolver {
  const grpc_resolver_vtable *vtable;
  gpr_refcount refs;
};

struct grpc_resolver_vtable {
  void (*destroy)(grpc_resolver *resolver);
  void (*shutdown)(grpc_resolver *resolver);
  void (*channel_saw_error)(grpc_resolver *resolver,
                            struct sockaddr *failing_address,
                            int failing_address_len);
  void (*next)(grpc_resolver *resolver, grpc_client_config **target_config,
               grpc_iomgr_closure *on_complete);
};

#ifdef GRPC_RESOLVER_REFCOUNT_DEBUG
#define GRPC_RESOLVER_REF(p, r) grpc_resolver_ref((p), __FILE__, __LINE__, (r))
#define GRPC_RESOLVER_UNREF(p, r) \
  grpc_resolver_unref((p), __FILE__, __LINE__, (r))
void grpc_resolver_ref(grpc_resolver *policy, const char *file, int line,
                       const char *reason);
void grpc_resolver_unref(grpc_resolver *policy, const char *file, int line,
                         const char *reason);
#else
#define GRPC_RESOLVER_REF(p, r) grpc_resolver_ref((p))
#define GRPC_RESOLVER_UNREF(p, r) grpc_resolver_unref((p))
void grpc_resolver_ref(grpc_resolver *policy);
void grpc_resolver_unref(grpc_resolver *policy);
#endif

void grpc_resolver_init(grpc_resolver *resolver,
                        const grpc_resolver_vtable *vtable);

void grpc_resolver_shutdown(grpc_resolver *resolver);

void grpc_resolver_channel_saw_error(grpc_resolver *resolver,
                                     struct sockaddr *failing_address,
                                     int failing_address_len);

void grpc_resolver_next(grpc_resolver *resolver,
                        grpc_client_config **target_config,
                        grpc_iomgr_closure *on_complete);

#endif /* GRPC_INTERNAL_CORE_CONFIG_RESOLVER_H */