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Diffstat (limited to 'src/common/Formatter.cc')
| -rw-r--r-- | src/common/Formatter.cc | 957 |
1 files changed, 957 insertions, 0 deletions
diff --git a/src/common/Formatter.cc b/src/common/Formatter.cc new file mode 100644 index 000000000..362deffb5 --- /dev/null +++ b/src/common/Formatter.cc @@ -0,0 +1,957 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2011 New Dream Network + * + * 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. + * + */ + +#define LARGE_SIZE 1024 + +#include "HTMLFormatter.h" +#include "common/escape.h" +#include "include/buffer.h" + +#include <fmt/format.h> +#include <algorithm> +#include <set> +#include <limits> + +// ----------------------- +namespace ceph { + +std::string +fixed_u_to_string(uint64_t num, int scale) +{ + std::ostringstream t; + + t.fill('0'); + t.width(scale + 1); + t << num; + int len = t.str().size(); + return t.str().substr(0,len - scale) + "." + t.str().substr(len - scale); +} + +std::string +fixed_to_string(int64_t num, int scale) +{ + std::ostringstream t; + bool neg = num < 0; + if (neg) num = -num; + + t.fill('0'); + t.width(scale + 1); + t << num; + int len = t.str().size(); + return (neg ? "-" : "") + t.str().substr(0,len - scale) + "." + t.str().substr(len - scale); +} + +/* + * FormatterAttrs(const char *attr, ...) + * + * Requires a list of attrs followed by NULL. The attrs should be char * + * pairs, first one is the name, second one is the value. E.g., + * + * FormatterAttrs("name1", "value1", "name2", "value2", NULL); + */ +FormatterAttrs::FormatterAttrs(const char *attr, ...) +{ + const char *s = attr; + va_list ap; + va_start(ap, attr); + do { + const char *val = va_arg(ap, char *); + if (!val) + break; + + attrs.push_back(make_pair(std::string(s), std::string(val))); + s = va_arg(ap, char *); + } while (s); + va_end(ap); +} + +void Formatter::write_bin_data(const char*, int){} + +Formatter::Formatter() { } + +Formatter::~Formatter() { } + +Formatter *Formatter::create(std::string_view type, + std::string_view default_type, + std::string_view fallback) +{ + std::string_view mytype(type); + if (mytype.empty()) { + mytype = default_type; + } + + if (mytype == "json") + return new JSONFormatter(false); + else if (mytype == "json-pretty") + return new JSONFormatter(true); + else if (mytype == "xml") + return new XMLFormatter(false); + else if (mytype == "xml-pretty") + return new XMLFormatter(true); + else if (mytype == "table") + return new TableFormatter(); + else if (mytype == "table-kv") + return new TableFormatter(true); + else if (mytype == "html") + return new HTMLFormatter(false); + else if (mytype == "html-pretty") + return new HTMLFormatter(true); + else if (fallback != "") + return create(fallback, "", ""); + else + return (Formatter *) NULL; +} + + +void Formatter::flush(bufferlist &bl) +{ + std::stringstream os; + flush(os); + bl.append(os.str()); +} + +void Formatter::dump_format(std::string_view name, const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + dump_format_va(name, NULL, true, fmt, ap); + va_end(ap); +} + +void Formatter::dump_format_ns(std::string_view name, const char *ns, const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + dump_format_va(name, ns, true, fmt, ap); + va_end(ap); + +} + +void Formatter::dump_format_unquoted(std::string_view name, const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + dump_format_va(name, NULL, false, fmt, ap); + va_end(ap); +} + +// ----------------------- + +JSONFormatter::JSONFormatter(bool p) +: m_pretty(p), m_is_pending_string(false) +{ + reset(); +} + +void JSONFormatter::flush(std::ostream& os) +{ + finish_pending_string(); + os << m_ss.str(); + if (m_line_break_enabled) + os << "\n"; + m_ss.clear(); + m_ss.str(""); +} + +void JSONFormatter::reset() +{ + m_stack.clear(); + m_ss.clear(); + m_ss.str(""); + m_pending_string.clear(); + m_pending_string.str(""); +} + +void JSONFormatter::print_comma(json_formatter_stack_entry_d& entry) +{ + if (entry.size) { + if (m_pretty) { + m_ss << ",\n"; + for (unsigned i = 1; i < m_stack.size(); i++) + m_ss << " "; + } else { + m_ss << ","; + } + } else if (m_pretty) { + m_ss << "\n"; + for (unsigned i = 1; i < m_stack.size(); i++) + m_ss << " "; + } + if (m_pretty && entry.is_array) + m_ss << " "; +} + +void JSONFormatter::print_quoted_string(std::string_view s) +{ + m_ss << '\"' << json_stream_escaper(s) << '\"'; +} + +void JSONFormatter::print_name(std::string_view name) +{ + finish_pending_string(); + if (m_stack.empty()) + return; + struct json_formatter_stack_entry_d& entry = m_stack.back(); + print_comma(entry); + if (!entry.is_array) { + if (m_pretty) { + m_ss << " "; + } + m_ss << "\"" << name << "\""; + if (m_pretty) + m_ss << ": "; + else + m_ss << ':'; + } + ++entry.size; +} + +void JSONFormatter::open_section(std::string_view name, const char *ns, bool is_array) +{ + if (handle_open_section(name, ns, is_array)) { + return; + } + if (ns) { + std::ostringstream oss; + oss << name << " " << ns; + print_name(oss.str().c_str()); + } else { + print_name(name); + } + if (is_array) + m_ss << '['; + else + m_ss << '{'; + + json_formatter_stack_entry_d n; + n.is_array = is_array; + m_stack.push_back(n); +} + +void JSONFormatter::open_array_section(std::string_view name) +{ + open_section(name, nullptr, true); +} + +void JSONFormatter::open_array_section_in_ns(std::string_view name, const char *ns) +{ + open_section(name, ns, true); +} + +void JSONFormatter::open_object_section(std::string_view name) +{ + open_section(name, nullptr, false); +} + +void JSONFormatter::open_object_section_in_ns(std::string_view name, const char *ns) +{ + open_section(name, ns, false); +} + +void JSONFormatter::close_section() +{ + + if (handle_close_section()) { + return; + } + ceph_assert(!m_stack.empty()); + finish_pending_string(); + + struct json_formatter_stack_entry_d& entry = m_stack.back(); + if (m_pretty && entry.size) { + m_ss << "\n"; + for (unsigned i = 1; i < m_stack.size(); i++) + m_ss << " "; + } + m_ss << (entry.is_array ? ']' : '}'); + m_stack.pop_back(); + if (m_pretty && m_stack.empty()) + m_ss << "\n"; +} + +void JSONFormatter::finish_pending_string() +{ + if (m_is_pending_string) { + m_is_pending_string = false; + add_value(m_pending_name.c_str(), m_pending_string.str(), true); + m_pending_string.str(""); + } +} + +template <class T> +void JSONFormatter::add_value(std::string_view name, T val) +{ + std::stringstream ss; + ss.precision(std::numeric_limits<T>::max_digits10); + ss << val; + add_value(name, ss.str(), false); +} + +void JSONFormatter::add_value(std::string_view name, std::string_view val, bool quoted) +{ + if (handle_value(name, val, quoted)) { + return; + } + print_name(name); + if (!quoted) { + m_ss << val; + } else { + print_quoted_string(val); + } +} + +void JSONFormatter::dump_unsigned(std::string_view name, uint64_t u) +{ + add_value(name, u); +} + +void JSONFormatter::dump_int(std::string_view name, int64_t s) +{ + add_value(name, s); +} + +void JSONFormatter::dump_float(std::string_view name, double d) +{ + add_value(name, d); +} + +void JSONFormatter::dump_string(std::string_view name, std::string_view s) +{ + add_value(name, s, true); +} + +std::ostream& JSONFormatter::dump_stream(std::string_view name) +{ + finish_pending_string(); + m_pending_name = name; + m_is_pending_string = true; + return m_pending_string; +} + +void JSONFormatter::dump_format_va(std::string_view name, const char *ns, bool quoted, const char *fmt, va_list ap) +{ + char buf[LARGE_SIZE]; + vsnprintf(buf, LARGE_SIZE, fmt, ap); + + add_value(name, buf, quoted); +} + +int JSONFormatter::get_len() const +{ + return m_ss.str().size(); +} + +void JSONFormatter::write_raw_data(const char *data) +{ + m_ss << data; +} + +const char *XMLFormatter::XML_1_DTD = + "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"; + +XMLFormatter::XMLFormatter(bool pretty, bool lowercased, bool underscored) +: m_pretty(pretty), + m_lowercased(lowercased), + m_underscored(underscored) +{ + reset(); +} + +void XMLFormatter::flush(std::ostream& os) +{ + finish_pending_string(); + std::string m_ss_str = m_ss.str(); + os << m_ss_str; + /* There is a small catch here. If the rest of the formatter had NO output, + * we should NOT output a newline. This primarily triggers on HTTP redirects */ + if (m_pretty && !m_ss_str.empty()) + os << "\n"; + else if (m_line_break_enabled) + os << "\n"; + m_ss.clear(); + m_ss.str(""); +} + +void XMLFormatter::reset() +{ + m_ss.clear(); + m_ss.str(""); + m_pending_string.clear(); + m_pending_string.str(""); + m_sections.clear(); + m_pending_string_name.clear(); + m_header_done = false; +} + +void XMLFormatter::output_header() +{ + if(!m_header_done) { + m_header_done = true; + write_raw_data(XMLFormatter::XML_1_DTD); + if (m_pretty) + m_ss << "\n"; + } +} + +void XMLFormatter::output_footer() +{ + while(!m_sections.empty()) { + close_section(); + } +} + +void XMLFormatter::open_object_section(std::string_view name) +{ + open_section_in_ns(name, NULL, NULL); +} + +void XMLFormatter::open_object_section_with_attrs(std::string_view name, const FormatterAttrs& attrs) +{ + open_section_in_ns(name, NULL, &attrs); +} + +void XMLFormatter::open_object_section_in_ns(std::string_view name, const char *ns) +{ + open_section_in_ns(name, ns, NULL); +} + +void XMLFormatter::open_array_section(std::string_view name) +{ + open_section_in_ns(name, NULL, NULL); +} + +void XMLFormatter::open_array_section_with_attrs(std::string_view name, const FormatterAttrs& attrs) +{ + open_section_in_ns(name, NULL, &attrs); +} + +void XMLFormatter::open_array_section_in_ns(std::string_view name, const char *ns) +{ + open_section_in_ns(name, ns, NULL); +} + +void XMLFormatter::close_section() +{ + ceph_assert(!m_sections.empty()); + finish_pending_string(); + + std::string section = m_sections.back(); + std::transform(section.begin(), section.end(), section.begin(), + [this](char c) { return this->to_lower_underscore(c); }); + m_sections.pop_back(); + print_spaces(); + m_ss << "</" << section << ">"; + if (m_pretty) + m_ss << "\n"; +} + +template <class T> +void XMLFormatter::add_value(std::string_view name, T val) +{ + std::string e(name); + std::transform(e.begin(), e.end(), e.begin(), + [this](char c) { return this->to_lower_underscore(c); }); + + print_spaces(); + m_ss.precision(std::numeric_limits<T>::max_digits10); + m_ss << "<" << e << ">" << val << "</" << e << ">"; + if (m_pretty) + m_ss << "\n"; +} + +void XMLFormatter::dump_unsigned(std::string_view name, uint64_t u) +{ + add_value(name, u); +} + +void XMLFormatter::dump_int(std::string_view name, int64_t s) +{ + add_value(name, s); +} + +void XMLFormatter::dump_float(std::string_view name, double d) +{ + add_value(name, d); +} + +void XMLFormatter::dump_string(std::string_view name, std::string_view s) +{ + std::string e(name); + std::transform(e.begin(), e.end(), e.begin(), + [this](char c) { return this->to_lower_underscore(c); }); + + print_spaces(); + m_ss << "<" << e << ">" << xml_stream_escaper(s) << "</" << e << ">"; + if (m_pretty) + m_ss << "\n"; +} + +void XMLFormatter::dump_string_with_attrs(std::string_view name, std::string_view s, const FormatterAttrs& attrs) +{ + std::string e(name); + std::transform(e.begin(), e.end(), e.begin(), + [this](char c) { return this->to_lower_underscore(c); }); + + std::string attrs_str; + get_attrs_str(&attrs, attrs_str); + print_spaces(); + m_ss << "<" << e << attrs_str << ">" << xml_stream_escaper(s) << "</" << e << ">"; + if (m_pretty) + m_ss << "\n"; +} + +std::ostream& XMLFormatter::dump_stream(std::string_view name) +{ + print_spaces(); + m_pending_string_name = name; + m_ss << "<" << m_pending_string_name << ">"; + return m_pending_string; +} + +void XMLFormatter::dump_format_va(std::string_view name, const char *ns, bool quoted, const char *fmt, va_list ap) +{ + char buf[LARGE_SIZE]; + size_t len = vsnprintf(buf, LARGE_SIZE, fmt, ap); + std::string e(name); + std::transform(e.begin(), e.end(), e.begin(), + [this](char c) { return this->to_lower_underscore(c); }); + + print_spaces(); + if (ns) { + m_ss << "<" << e << " xmlns=\"" << ns << "\">" << xml_stream_escaper(std::string_view(buf, len)) << "</" << e << ">"; + } else { + m_ss << "<" << e << ">" << xml_stream_escaper(std::string_view(buf, len)) << "</" << e << ">"; + } + + if (m_pretty) + m_ss << "\n"; +} + +int XMLFormatter::get_len() const +{ + return m_ss.str().size(); +} + +void XMLFormatter::write_raw_data(const char *data) +{ + m_ss << data; +} + +void XMLFormatter::write_bin_data(const char* buff, int buf_len) +{ + std::stringbuf *pbuf = m_ss.rdbuf(); + pbuf->sputn(buff, buf_len); + m_ss.seekg(buf_len); +} + +void XMLFormatter::get_attrs_str(const FormatterAttrs *attrs, std::string& attrs_str) +{ + std::stringstream attrs_ss; + + for (std::list<std::pair<std::string, std::string> >::const_iterator iter = attrs->attrs.begin(); + iter != attrs->attrs.end(); ++iter) { + std::pair<std::string, std::string> p = *iter; + attrs_ss << " " << p.first << "=" << "\"" << p.second << "\""; + } + + attrs_str = attrs_ss.str(); +} + +void XMLFormatter::open_section_in_ns(std::string_view name, const char *ns, const FormatterAttrs *attrs) +{ + print_spaces(); + std::string attrs_str; + + if (attrs) { + get_attrs_str(attrs, attrs_str); + } + + std::string e(name); + std::transform(e.begin(), e.end(), e.begin(), + [this](char c) { return this->to_lower_underscore(c); }); + + if (ns) { + m_ss << "<" << e << attrs_str << " xmlns=\"" << ns << "\">"; + } else { + m_ss << "<" << e << attrs_str << ">"; + } + if (m_pretty) + m_ss << "\n"; + m_sections.push_back(std::string(name)); +} + +void XMLFormatter::finish_pending_string() +{ + if (!m_pending_string_name.empty()) { + m_ss << xml_stream_escaper(m_pending_string.str()) + << "</" << m_pending_string_name << ">"; + m_pending_string_name.clear(); + m_pending_string.str(std::string()); + if (m_pretty) { + m_ss << "\n"; + } + } +} + +void XMLFormatter::print_spaces() +{ + finish_pending_string(); + if (m_pretty) { + std::string spaces(m_sections.size(), ' '); + m_ss << spaces; + } +} + +char XMLFormatter::to_lower_underscore(char c) const +{ + if (m_underscored && c == ' ') { + return '_'; + } else if (m_lowercased) { + return std::tolower(c); + } + return c; +} + +TableFormatter::TableFormatter(bool keyval) : m_keyval(keyval) +{ + reset(); +} + +void TableFormatter::flush(std::ostream& os) +{ + finish_pending_string(); + std::vector<size_t> column_size = m_column_size; + std::vector<std::string> column_name = m_column_name; + + std::set<int> need_header_set; + + // auto-sizing columns + for (size_t i = 0; i < m_vec.size(); i++) { + for (size_t j = 0; j < m_vec[i].size(); j++) { + column_size.resize(m_vec[i].size()); + column_name.resize(m_vec[i].size()); + if (i > 0) { + if (m_vec[i - 1][j] != m_vec[i][j]) { + // changing row labels require to show the header + need_header_set.insert(i); + column_name[i] = m_vec[i][j].first; + } + } else { + column_name[i] = m_vec[i][j].first; + } + + if (m_vec[i][j].second.length() > column_size[j]) + column_size[j] = m_vec[i][j].second.length(); + if (m_vec[i][j].first.length() > column_size[j]) + column_size[j] = m_vec[i][j].first.length(); + } + } + + bool need_header = false; + if ((column_size.size() == m_column_size.size())) { + for (size_t i = 0; i < column_size.size(); i++) { + if (column_size[i] != m_column_size[i]) { + need_header = true; + break; + } + } + } else { + need_header = true; + } + + if (need_header) { + // first row always needs a header if there wasn't one before + need_header_set.insert(0); + } + + m_column_size = column_size; + for (size_t i = 0; i < m_vec.size(); i++) { + if (i == 0) { + if (need_header_set.count(i)) { + // print the header + if (!m_keyval) { + os << "+"; + for (size_t j = 0; j < m_vec[i].size(); j++) { + for (size_t v = 0; v < m_column_size[j] + 3; v++) + os << "-"; + os << "+"; + } + os << "\n"; + os << "|"; + + for (size_t j = 0; j < m_vec[i].size(); j++) { + os << fmt::format(" {:<{}}|", + m_vec[i][j].first, m_column_size[j] + 2); + } + os << "\n"; + os << "+"; + for (size_t j = 0; j < m_vec[i].size(); j++) { + for (size_t v = 0; v < m_column_size[j] + 3; v++) + os << "-"; + os << "+"; + } + os << "\n"; + } + } + } + // print body + if (!m_keyval) + os << "|"; + for (size_t j = 0; j < m_vec[i].size(); j++) { + if (!m_keyval) + os << " "; + if (m_keyval) { + os << "key::"; + os << m_vec[i][j].first; + os << "="; + os << "\""; + os << m_vec[i][j].second; + os << "\" "; + } else { + os << fmt::format("{:<{}}|", m_vec[i][j].second, m_column_size[j] + 2); + } + } + + os << "\n"; + if (!m_keyval) { + if (i == (m_vec.size() - 1)) { + // print trailer + os << "+"; + for (size_t j = 0; j < m_vec[i].size(); j++) { + for (size_t v = 0; v < m_column_size[j] + 3; v++) + os << "-"; + os << "+"; + } + os << "\n"; + } + } + m_vec[i].clear(); + } + m_vec.clear(); +} + +void TableFormatter::reset() +{ + m_ss.clear(); + m_ss.str(""); + m_section_cnt.clear(); + m_column_size.clear(); + m_section_open = 0; +} + +void TableFormatter::open_object_section(std::string_view name) +{ + open_section_in_ns(name, NULL, NULL); +} + +void TableFormatter::open_object_section_with_attrs(std::string_view name, const FormatterAttrs& attrs) +{ + open_section_in_ns(name, NULL, NULL); +} + +void TableFormatter::open_object_section_in_ns(std::string_view name, const char *ns) +{ + open_section_in_ns(name, NULL, NULL); +} + +void TableFormatter::open_array_section(std::string_view name) +{ + open_section_in_ns(name, NULL, NULL); +} + +void TableFormatter::open_array_section_with_attrs(std::string_view name, const FormatterAttrs& attrs) +{ + open_section_in_ns(name, NULL, NULL); +} + +void TableFormatter::open_array_section_in_ns(std::string_view name, const char *ns) +{ + open_section_in_ns(name, NULL, NULL); +} + +void TableFormatter::open_section_in_ns(std::string_view name, const char *ns, const FormatterAttrs *attrs) +{ + m_section.push_back(std::string(name)); + m_section_open++; +} + +void TableFormatter::close_section() +{ + // + m_section_open--; + if (m_section.size()) { + m_section_cnt[m_section.back()] = 0; + m_section.pop_back(); + } +} + +size_t TableFormatter::m_vec_index(std::string_view name) +{ + std::string key(name); + + size_t i = m_vec.size(); + if (i) + i--; + + // make sure there are vectors to push back key/val pairs + if (!m_vec.size()) + m_vec.resize(1); + + if (m_vec.size()) { + if (m_vec[i].size()) { + if (m_vec[i][0].first == key) { + // start a new column if a key is repeated + m_vec.resize(m_vec.size() + 1); + i++; + } + } + } + + return i; +} + +std::string TableFormatter::get_section_name(std::string_view name) +{ + std::string t_name{name}; + for (size_t i = 0; i < m_section.size(); i++) { + t_name.insert(0, ":"); + t_name.insert(0, m_section[i]); + } + if (m_section_open) { + std::stringstream lss; + lss << t_name; + lss << "["; + lss << m_section_cnt[t_name]++; + lss << "]"; + return lss.str(); + } else { + return t_name; + } +} + +template <class T> +void TableFormatter::add_value(std::string_view name, T val) { + finish_pending_string(); + size_t i = m_vec_index(name); + m_ss.precision(std::numeric_limits<double>::max_digits10); + m_ss << val; + + m_vec[i].push_back(std::make_pair(get_section_name(name), m_ss.str())); + m_ss.clear(); + m_ss.str(""); +} + +void TableFormatter::dump_unsigned(std::string_view name, uint64_t u) +{ + add_value(name, u); +} + +void TableFormatter::dump_int(std::string_view name, int64_t s) +{ + add_value(name, s); +} + +void TableFormatter::dump_float(std::string_view name, double d) +{ + add_value(name, d); +} + +void TableFormatter::dump_string(std::string_view name, std::string_view s) +{ + finish_pending_string(); + size_t i = m_vec_index(name); + m_ss << s; + + m_vec[i].push_back(std::make_pair(get_section_name(name), m_ss.str())); + m_ss.clear(); + m_ss.str(""); +} + +void TableFormatter::dump_string_with_attrs(std::string_view name, std::string_view s, const FormatterAttrs& attrs) +{ + finish_pending_string(); + size_t i = m_vec_index(name); + + std::string attrs_str; + get_attrs_str(&attrs, attrs_str); + m_ss << attrs_str << s; + + m_vec[i].push_back(std::make_pair(get_section_name(name), m_ss.str())); + m_ss.clear(); + m_ss.str(""); +} + +void TableFormatter::dump_format_va(std::string_view name, + const char *ns, bool quoted, + const char *fmt, va_list ap) +{ + finish_pending_string(); + char buf[LARGE_SIZE]; + vsnprintf(buf, LARGE_SIZE, fmt, ap); + + size_t i = m_vec_index(name); + if (ns) { + m_ss << ns << "." << buf; + } else + m_ss << buf; + + m_vec[i].push_back(std::make_pair(get_section_name(name), m_ss.str())); + m_ss.clear(); + m_ss.str(""); +} + +std::ostream& TableFormatter::dump_stream(std::string_view name) +{ + finish_pending_string(); + // we don't support this + m_pending_name = name; + return m_ss; +} + +int TableFormatter::get_len() const +{ + // we don't know the size until flush is called + return 0; +} + +void TableFormatter::write_raw_data(const char *data) { + // not supported +} + +void TableFormatter::get_attrs_str(const FormatterAttrs *attrs, std::string& attrs_str) +{ + std::stringstream attrs_ss; + + for (std::list<std::pair<std::string, std::string> >::const_iterator iter = attrs->attrs.begin(); + iter != attrs->attrs.end(); ++iter) { + std::pair<std::string, std::string> p = *iter; + attrs_ss << " " << p.first << "=" << "\"" << p.second << "\""; + } + + attrs_str = attrs_ss.str(); +} + +void TableFormatter::finish_pending_string() +{ + if (m_pending_name.length()) { + std::string ss = m_ss.str(); + m_ss.clear(); + m_ss.str(""); + std::string pending_name = m_pending_name; + m_pending_name = ""; + dump_string(pending_name.c_str(), ss); + } +} +} + |