From 7da45d65be36d36b880cc55c5036e96c24b53f00 Mon Sep 17 00:00:00 2001 From: Qiaowei Ren Date: Thu, 1 Mar 2018 14:38:11 +0800 Subject: remove ceph code This patch removes initial ceph code, due to license issue. Change-Id: I092d44f601cdf34aed92300fe13214925563081c Signed-off-by: Qiaowei Ren --- src/ceph/examples/librados/hello_world_c.c | 313 ----------------------------- 1 file changed, 313 deletions(-) delete mode 100644 src/ceph/examples/librados/hello_world_c.c (limited to 'src/ceph/examples/librados/hello_world_c.c') diff --git a/src/ceph/examples/librados/hello_world_c.c b/src/ceph/examples/librados/hello_world_c.c deleted file mode 100644 index 5b3efc9..0000000 --- a/src/ceph/examples/librados/hello_world_c.c +++ /dev/null @@ -1,313 +0,0 @@ -// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- -// vim: ts=8 sw=2 smarttab -/* - * Ceph - scalable distributed file system - * - * This is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License version 2.1, as published by the Free Software - * Foundation. See file COPYING. - * Copyright 2013 Inktank - */ - -// install the librados-dev package to get this -#include -#include -#include - -int main(int argc, const char **argv) -{ - int ret = 0; - - // we will use all of these below - const char *pool_name = "hello_world_pool"; - const char* hello = "hello world!"; - const char* object_name = "hello_object"; - rados_ioctx_t io_ctx = NULL; - int pool_created = 0; - - // first, we create a Rados object and initialize it - rados_t rados = NULL; - { - ret = rados_create(&rados, "admin"); // just use the client.admin keyring - if (ret < 0) { // let's handle any error that might have come back - printf("couldn't initialize rados! error %d\n", ret); - ret = EXIT_FAILURE; - goto out; - } else { - printf("we just set up a rados cluster object\n"); - } - } - - /* - * Now we need to get the rados object its config info. It can - * parse argv for us to find the id, monitors, etc, so let's just - * use that. - */ - { - ret = rados_conf_parse_argv(rados, argc, argv); - if (ret < 0) { - // This really can't happen, but we need to check to be a good citizen. - printf("failed to parse config options! error %d\n", ret); - ret = EXIT_FAILURE; - goto out; - } else { - printf("we just parsed our config options\n"); - // We also want to apply the config file if the user specified - // one, and conf_parse_argv won't do that for us. - int i; - for (i = 0; i < argc; ++i) { - if ((strcmp(argv[i], "-c") == 0) || (strcmp(argv[i], "--conf") == 0)) { - ret = rados_conf_read_file(rados, argv[i+1]); - if (ret < 0) { - // This could fail if the config file is malformed, but it'd be hard. - printf("failed to parse config file %s! error %d\n", argv[i+1], ret); - ret = EXIT_FAILURE; - goto out; - } - break; - } - } - } - } - - /* - * next, we actually connect to the cluster - */ - { - ret = rados_connect(rados); - if (ret < 0) { - printf("couldn't connect to cluster! error %d\n", ret); - ret = EXIT_FAILURE; - goto out; - } else { - printf("we just connected to the rados cluster\n"); - } - } - - /* - * let's create our own pool instead of scribbling over real data. - * Note that this command creates pools with default PG counts specified - * by the monitors, which may not be appropriate for real use -- it's fine - * for testing, though. - */ - { - ret = rados_pool_create(rados, pool_name); - if (ret < 0) { - printf("couldn't create pool! error %d\n", ret); - return EXIT_FAILURE; - } else { - printf("we just created a new pool named %s\n", pool_name); - } - pool_created = 1; - } - - /* - * create an "IoCtx" which is used to do IO to a pool - */ - { - ret = rados_ioctx_create(rados, pool_name, &io_ctx); - if (ret < 0) { - printf("couldn't set up ioctx! error %d\n", ret); - ret = EXIT_FAILURE; - goto out; - } else { - printf("we just created an ioctx for our pool\n"); - } - } - - /* - * now let's do some IO to the pool! We'll write "hello world!" to a - * new object. - */ - { - /* - * now that we have the data to write, let's send it to an object. - * We'll use the synchronous interface for simplicity. - */ - ret = rados_write_full(io_ctx, object_name, hello, strlen(hello)); - if (ret < 0) { - printf("couldn't write object! error %d\n", ret); - ret = EXIT_FAILURE; - goto out; - } else { - printf("we just wrote new object %s, with contents '%s'\n", object_name, hello); - } - } - - /* - * now let's read that object back! Just for fun, we'll do it using - * async IO instead of synchronous. (This would be more useful if we - * wanted to send off multiple reads at once; see - * http://docs.ceph.com/docs/master/rados/api/librados/#asychronous-io ) - */ - { - int read_len = 4194304; // this is way more than we need - char* read_buf = malloc(read_len + 1); // add one for the terminating 0 we'll add later - if (!read_buf) { - printf("couldn't allocate read buffer\n"); - ret = EXIT_FAILURE; - goto out; - } - // allocate the completion from librados - rados_completion_t read_completion; - ret = rados_aio_create_completion(NULL, NULL, NULL, &read_completion); - if (ret < 0) { - printf("couldn't create completion! error %d\n", ret); - ret = EXIT_FAILURE; - free(read_buf); - goto out; - } else { - printf("we just created a new completion\n"); - } - // send off the request. - ret = rados_aio_read(io_ctx, object_name, read_completion, read_buf, read_len, 0); - if (ret < 0) { - printf("couldn't start read object! error %d\n", ret); - ret = EXIT_FAILURE; - free(read_buf); - rados_aio_release(read_completion); - goto out; - } - // wait for the request to complete, and check that it succeeded. - rados_aio_wait_for_complete(read_completion); - ret = rados_aio_get_return_value(read_completion); - if (ret < 0) { - printf("couldn't read object! error %d\n", ret); - ret = EXIT_FAILURE; - free(read_buf); - rados_aio_release(read_completion); - goto out; - } else { - read_buf[ret] = 0; // null-terminate the string - printf("we read our object %s, and got back %d bytes with contents\n%s\n", object_name, ret, read_buf); - } - - free(read_buf); - rados_aio_release(read_completion); - } - - /* - * We can also use xattrs that go alongside the object. - */ - { - const char* version = "1"; - ret = rados_setxattr(io_ctx, object_name, "version", version, strlen(version)); - if (ret < 0) { - printf("failed to set xattr version entry! error %d\n", ret); - ret = EXIT_FAILURE; - goto out; - } else { - printf("we set the xattr 'version' on our object!\n"); - } - } - - /* - * And if we want to be really cool, we can do multiple things in a single - * atomic operation. For instance, we can update the contents of our object - * and set the version at the same time. - */ - { - const char* content = "v2"; - rados_write_op_t write_op = rados_create_write_op(); - if (!write_op) { - printf("failed to allocate write op\n"); - ret = EXIT_FAILURE; - goto out; - } - rados_write_op_write_full(write_op, content, strlen(content)); - const char* version = "2"; - rados_write_op_setxattr(write_op, "version", version, strlen(version)); - ret = rados_write_op_operate(write_op, io_ctx, object_name, NULL, 0); - if (ret < 0) { - printf("failed to do compound write! error %d\n", ret); - ret = EXIT_FAILURE; - rados_release_write_op(write_op); - goto out; - } else { - printf("we overwrote our object %s with contents\n%s\n", object_name, content); - } - rados_release_write_op(write_op); - } - - /* - * And to be even cooler, we can make sure that the object looks the - * way we expect before doing the write! Notice how this attempt fails - * because the xattr differs. - */ - { - rados_write_op_t failed_write_op = rados_create_write_op(); - if (!failed_write_op) { - printf("failed to allocate write op\n"); - ret = EXIT_FAILURE; - goto out; - } - const char* content = "v2"; - const char* version = "2"; - const char* old_version = "1"; - rados_write_op_cmpxattr(failed_write_op, "version", LIBRADOS_CMPXATTR_OP_EQ, old_version, strlen(old_version)); - rados_write_op_write_full(failed_write_op, content, strlen(content)); - rados_write_op_setxattr(failed_write_op, "version", version, strlen(version)); - ret = rados_write_op_operate(failed_write_op, io_ctx, object_name, NULL, 0); - if (ret < 0) { - printf("we just failed a write because the xattr wasn't as specified\n"); - } else { - printf("we succeeded on writing despite an xattr comparison mismatch!\n"); - ret = EXIT_FAILURE; - rados_release_write_op(failed_write_op); - goto out; - } - rados_release_write_op(failed_write_op); - - /* - * Now let's do the update with the correct xattr values so it - * actually goes through - */ - content = "v3"; - old_version = "2"; - version = "3"; - rados_write_op_t update_op = rados_create_write_op(); - if (!failed_write_op) { - printf("failed to allocate write op\n"); - ret = EXIT_FAILURE; - goto out; - } - rados_write_op_cmpxattr(update_op, "version", LIBRADOS_CMPXATTR_OP_EQ, old_version, strlen(old_version)); - rados_write_op_write_full(update_op, content, strlen(content)); - rados_write_op_setxattr(update_op, "version", version, strlen(version)); - ret = rados_write_op_operate(update_op, io_ctx, object_name, NULL, 0); - if (ret < 0) { - printf("failed to do a compound write update! error %d\n", ret); - ret = EXIT_FAILURE; - rados_release_write_op(update_op); - goto out; - } else { - printf("we overwrote our object %s following an xattr test with contents\n%s\n", object_name, content); - } - rados_release_write_op(update_op); - } - - ret = EXIT_SUCCESS; - - out: - if (io_ctx) { - rados_ioctx_destroy(io_ctx); - } - - if (pool_created) { - /* - * And now we're done, so let's remove our pool and then - * shut down the connection gracefully. - */ - int delete_ret = rados_pool_delete(rados, pool_name); - if (delete_ret < 0) { - // be careful not to - printf("We failed to delete our test pool!\n"); - ret = EXIT_FAILURE; - } - } - - rados_shutdown(rados); - - return ret; -} -- cgit 1.2.3-korg