initial code repo

[stor4nfv.git] / src / ceph / src / rgw / rgw_formats.h

diff --git a/src/ceph/src/rgw/rgw_formats.h b/src/ceph/src/rgw/rgw_formats.h
new file mode 100644 (file)
index 0000000..a509658
--- /dev/null
+++ b/src/ceph/src/rgw/rgw_formats.h
@@ -0,0 +1,128 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_RGW_FORMATS_H
+#define CEPH_RGW_FORMATS_H
+
+#include "common/Formatter.h"
+
+#include <list>
+#include <stdint.h>
+#include <string>
+#include <ostream>
+
+struct plain_stack_entry {
+  int size;
+  bool is_array;
+};
+
+/* FIXME: this class is mis-named.
+ * FIXME: This was a hack to send certain swift messages.
+ * There is a much better way to do this.
+ */
+class RGWFormatter_Plain : public Formatter {
+  void reset_buf();
+public:
+  explicit RGWFormatter_Plain(bool use_kv = false);
+  ~RGWFormatter_Plain() override;
+
+  void set_status(int status, const char* status_name) override {};
+  void output_header() override {};
+  void output_footer() override {};
+  void enable_line_break() override {};
+  void flush(ostream& os) override;
+  void reset() override;
+
+  void open_array_section(const char *name) override;
+  void open_array_section_in_ns(const char *name, const char *ns) override;
+  void open_object_section(const char *name) override;
+  void open_object_section_in_ns(const char *name, const char *ns) override;
+  void close_section() override;
+  void dump_unsigned(const char *name, uint64_t u) override;
+  void dump_int(const char *name, int64_t u) override;
+  void dump_float(const char *name, double d) override;
+  void dump_string(const char *name, const std::string& s) override;
+  std::ostream& dump_stream(const char *name) override;
+  void dump_format_va(const char *name, const char *ns, bool quoted, const char *fmt, va_list ap) override;
+  int get_len() const override;
+  void write_raw_data(const char *data) override;
+
+private:
+  void write_data(const char *fmt, ...);
+  void dump_value_int(const char *name, const char *fmt, ...);
+
+  char *buf = nullptr;
+  int len = 0;
+  int max_len = 0;
+
+  std::list<struct plain_stack_entry> stack;
+  size_t min_stack_level = 0;
+  bool use_kv;
+  bool wrote_something = 0;
+};
+
+
+/* This is a presentation layer. No logic inside, please. */
+class RGWSwiftWebsiteListingFormatter {
+  std::ostream& ss;
+  const std::string prefix;
+protected:
+  std::string format_name(const std::string& item_name) const;
+public:
+  RGWSwiftWebsiteListingFormatter(std::ostream& ss,
+                                  std::string prefix)
+    : ss(ss),
+      prefix(std::move(prefix)) {
+  }
+
+  /* The supplied css_path can be empty. In such situation a default,
+   * embedded style sheet will be generated. */
+  void generate_header(const std::string& dir_path,
+                       const std::string& css_path);
+  void generate_footer();
+  void dump_object(const rgw_bucket_dir_entry& objent);
+  void dump_subdir(const std::string& name);
+};
+
+
+class RGWFormatterFlusher {
+protected:
+  Formatter *formatter;
+  bool flushed;
+  bool started;
+  virtual void do_flush() = 0;
+  virtual void do_start(int ret) {}
+  void set_formatter(Formatter *f) {
+    formatter = f;
+  }
+public:
+  explicit RGWFormatterFlusher(Formatter *f) : formatter(f), flushed(false), started(false) {}
+  virtual ~RGWFormatterFlusher() {}
+
+  void flush() {
+    do_flush();
+    flushed = true;
+  }
+
+  virtual void start(int client_ret) {
+    if (!started)
+      do_start(client_ret);
+    started = true;
+  }
+
+  Formatter *get_formatter() { return formatter; }
+  bool did_flush() { return flushed; }
+  bool did_start() { return started; }
+};
+
+class RGWStreamFlusher : public RGWFormatterFlusher {
+  ostream& os;
+protected:
+  void do_flush() override {
+    formatter->flush(os);
+  }
+public:
+  RGWStreamFlusher(Formatter *f, ostream& _os) : RGWFormatterFlusher(f), os(_os) {}
+};
+
+#endif