重构cache目录，将libxml2、libcurl放到vendor目录。

cache/src/tango_cache_client_in.h

@@ -0,0 +1,151 @@
+#ifndef __TANGO_CACHE_CLIENT_IN_H__
+#define __TANGO_CACHE_CLIENT_IN_H__
+
+#include <curl/curl.h>
+#include <sys/queue.h>
+
+#include <event2/event.h>  
+#include <event.h>
+
+#include <MESA/wiredLB.h>
+#include "tango_cache_client.h"
+
+#define RESPONSE_HDR_EXPIRES 1
+#define RESPONSE_HDR_LAST_MOD 2
+#define RESPONSE_HDR_ALL	3
+
+enum CACHE_REQUEST_METHOD
+{
+	CACHE_REQUEST_GET=0,
+	CACHE_REQUEST_PUT,
+	CACHE_REQUEST_DELETE,
+	CACHE_REQUEST_DELETE_MUL,
+};
+
+enum GET_OBJECT_STATE
+{
+	GET_STATE_START=0,
+	GET_STATE_DELETE,
+	GET_STATE_END,
+};
+
+enum PUT_OBJECT_STATE
+{
+	PUT_STATE_START=0,
+	PUT_STATE_WAIT_START,
+	PUT_STATE_PART,
+	PUT_STATE_END,
+	PUT_STATE_CANCEL,
+};
+
+struct easy_string
+{
+	char* buff;
+	size_t len;
+	size_t size;
+};
+
+struct tango_cache_instance
+{
+	char minio_iplist[4096];
+	char bucketname[256];
+	char wiredlb_topic[64];
+	char wiredlb_group[64];
+	char wiredlb_datacenter[64];
+	u_int32_t minio_port;
+	u_int32_t wiredlb_override;
+	struct event_base* evbase;
+	struct event timer_event;
+	struct cache_statistics statistic;
+	CURLM *multi_hd;
+	void *runtime_log;
+	WLB_handle_t wiredlb;
+	time_t relative_ttl; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD><D0A7>
+	u_int64_t cache_limit_size;
+	long max_cnn_host;
+	u_int32_t upload_block_size; //minio<69>ֶ<EFBFBD><D6B6>ϴ<EFBFBD><CFB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD>
+	enum CACHE_ERR_CODE error_code;
+	u_int32_t hash_object_key;
+};
+
+struct multipart_etag_list
+{
+	char *etag;
+	u_int32_t part_number;
+	TAILQ_ENTRY(multipart_etag_list) node;
+};
+
+struct cache_ctx_data_get
+{
+	time_t max_age;//Get
+	time_t min_fresh;//Get
+	time_t expires;
+	time_t last_modify;
+	u_int32_t need_hdrs;
+	enum GET_OBJECT_STATE state;
+	struct easy_string response_tag;
+};
+
+struct cache_ctx_data_put
+{
+	struct evbuffer *evbuf;
+	size_t upload_length;
+	size_t upload_offset;
+	char *uploadID;
+	char *combine_xml;
+	TAILQ_HEAD(__etag_list_head, multipart_etag_list) etag_head;
+	enum PUT_OBJECT_STATE state;
+	u_int32_t part_index; //<2F><>RESPONSE_HDR_
+	bool close_state; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ùر<C3B9>
+};
+
+struct cache_ctx_multi_delete
+{
+	u_int32_t succ_num;
+	u_int32_t fail_num;
+};
+
+struct tango_cache_ctx
+{
+	CURL *curl;
+	struct curl_slist *headers;
+	struct future* future;
+	char error[CURL_ERROR_SIZE];	
+	char object_key[256];
+	char hostaddr[48];
+
+	enum CACHE_REQUEST_METHOD method;
+	enum CACHE_ERR_CODE error_code;
+	struct easy_string response;
+
+	bool fail_state;
+	long res_code;
+	
+	union{
+		struct cache_ctx_data_put put;
+		struct cache_ctx_data_get get;
+		struct cache_ctx_multi_delete del;
+	};
+	struct tango_cache_instance *instance;
+};
+
+struct curl_socket_data
+{
+	struct event sock_event;
+};
+
+void caculate_sha256(const char *data, unsigned long len, char *result, u_int32_t size);
+
+void easy_string_savedata(struct easy_string *estr, const char *data, size_t len);
+void easy_string_destroy(struct easy_string *estr);
+
+void tango_cache_ctx_destroy(struct tango_cache_ctx *ctx);
+void tango_cache_set_fail_state(struct tango_cache_ctx *ctx, enum CACHE_ERR_CODE error_code);
+const char *tango_cache_get_errstring(const struct tango_cache_ctx *ctx);
+
+struct tango_cache_ctx *tango_cache_update_prepare(struct tango_cache_instance *instance, struct future* future, struct tango_cache_meta *meta);
+struct tango_cache_ctx *tango_cache_fetch_prepare(struct tango_cache_instance *instance, struct future* future, struct tango_cache_meta *meta);
+struct tango_cache_ctx *tango_cache_delete_prepare(struct tango_cache_instance *instance, struct future* future, const char *objkey);
+
+#endif
+