Reorganize ext tree

- filters live under filters
- lb_policy, resolver implementations (being part of client_channel) live under client_channel

1 files changed, 84 insertions, 0 deletions

diff --git a/src/core/ext/filters/client_channel/resolver_registry.h b/src/core/ext/filters/client_channel/resolver_registry.h
new file mode 100644
index 0000000000..8d95fd864c
--- /dev/null
+++ b/src/core/ext/filters/client_channel/resolver_registry.h
@@ -0,0 +1,84 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_CLIENT_CHANNEL_RESOLVER_REGISTRY_H
+#define GRPC_CORE_EXT_CLIENT_CHANNEL_RESOLVER_REGISTRY_H
+
+#include "src/core/ext/filters/client_channel/resolver_factory.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+
+void grpc_resolver_registry_init();
+void grpc_resolver_registry_shutdown(void);
+
+/** Set the default URI prefix to \a default_prefix. */
+void grpc_resolver_registry_set_default_prefix(const char *default_prefix);
+
+/** Register a resolver type.
+    URI's of \a scheme will be resolved with the given resolver.
+    If \a priority is greater than zero, then the resolver will be eligible
+    to resolve names that are passed in with no scheme. Higher priority
+    resolvers will be tried before lower priority schemes. */
+void grpc_register_resolver_type(grpc_resolver_factory *factory);
+
+/** Create a resolver given \a target.
+    First tries to parse \a target as a URI. If this succeeds, tries
+    to locate a registered resolver factory based on the URI scheme.
+    If parsing or location fails, prefixes default_prefix from
+    grpc_resolver_registry_init to target, and tries again (if default_prefix
+    was not NULL).
+    If a resolver factory was found, use it to instantiate a resolver and
+    return it.
+    If a resolver factory was not found, return NULL.
+    \a args is a set of channel arguments to be included in the result
+    (typically the set of arguments passed in from the client API).
+    \a pollset_set is used to drive IO in the name resolution process, it
+    should not be NULL. */
+grpc_resolver *grpc_resolver_create(grpc_exec_ctx *exec_ctx, const char *target,
+                                    const grpc_channel_args *args,
+                                    grpc_pollset_set *pollset_set,
+                                    grpc_combiner *combiner);
+
+/** Find a resolver factory given a name and return an (owned-by-the-caller)
+ *  reference to it */
+grpc_resolver_factory *grpc_resolver_factory_lookup(const char *name);
+
+/** Given a target, return a (freshly allocated with gpr_malloc) string
+    representing the default authority to pass from a client. */
+char *grpc_get_default_authority(grpc_exec_ctx *exec_ctx, const char *target);
+
+/** Returns a newly allocated string containing \a target, adding the
+    default prefix if needed. */
+char *grpc_resolver_factory_add_default_prefix_if_needed(
+    grpc_exec_ctx *exec_ctx, const char *target);
+
+#endif /* GRPC_CORE_EXT_CLIENT_CHANNEL_RESOLVER_REGISTRY_H */