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authorEbus-at-dockstar <ebus@dockstar>2014-07-25 22:13:55 +0200
committerEbus-at-dockstar <ebus@dockstar>2014-07-25 22:13:55 +0200
commitf6675ccdd7a5997def3c4656f0e2c5dbbbed1fc8 (patch)
tree893a37289de684b95a6184c528e5c9c8547e7197 /datastore-leveldb/src/web.cpp
parentcfb0c10631bbbd31b525e7992b59de06d3c2e550 (diff)
downloadebus-alt-f6675ccdd7a5997def3c4656f0e2c5dbbbed1fc8.tar.gz
ebus-alt-f6675ccdd7a5997def3c4656f0e2c5dbbbed1fc8.zip
embed xexpr-path
Diffstat (limited to 'datastore-leveldb/src/web.cpp')
-rw-r--r--datastore-leveldb/src/web.cpp179
1 files changed, 0 insertions, 179 deletions
diff --git a/datastore-leveldb/src/web.cpp b/datastore-leveldb/src/web.cpp
deleted file mode 100644
index 443e782..0000000
--- a/datastore-leveldb/src/web.cpp
+++ /dev/null
@@ -1,179 +0,0 @@
-#include "web.h"
-#include "db.h"
-#include <algorithm>
-#include <chrono>
-#include <leveldb/comparator.h>
-
-static const leveldb::Comparator *cmp = leveldb::BytewiseComparator();
-
-static inline uint64_t now() {
- return std::chrono::duration_cast<std::chrono::milliseconds>(
- std::chrono::high_resolution_clock::now().time_since_epoch()).count();
-}
-
-// uint64_t is long
-inline void strToL(unsigned long int *l, std::string s) {
- *l = std::stoul(s);
-}
-// uint64_t is long long
-inline void strToL(unsigned long long int *l, std::string s) {
- *l = std::stoull(s);
-}
-
-static inline void reply_header(struct mg_connection *conn, const bool ok, const char *msg, const char *extra = "") {
- mg_printf(conn,
- "HTTP/1.1 %s %s\r\n"
- "%s",
- (ok) ? "200" : "500",
- msg,
- extra);
-}
-
-static inline bool parse_key(leveldb::Slice &&key, uint64_t *value) {
- if (key.size() != 20+3)
- return false;
- strToL(value, key.data()+3);
- return true;
-}
-
-const boost::regex web_handle_api_value_R(
- "/api/value/([a-zA-Z0-9\\.]+)");
-void web_handle_api_value(const boost::cmatch &match, struct mg_connection *conn) {
- std::string sensor(match[1].str());
- uint64_t timestamp = now();
- char buf[1024];
- int bytesRead = mg_read(conn, buf, 1024);
- std::string value(buf, bytesRead);
-
- if (db_insert(sensor, timestamp, value)) {
- reply_header(conn, true, "OK Value received", "\r\n");
- } else {
- reply_header(conn, false, "Internal Error", "\r\n");
- }
-}
-
-const boost::regex web_handle_api_value_timestamp_R(
- "/api/value/([a-zA-Z0-9\\.]+)/([0-9]+)");
-void web_handle_api_value_timestamp(const boost::cmatch &match, struct mg_connection *conn) {
- std::string sensor(match[1].str());
- uint64_t timestamp; strToL(&timestamp, match[2].str());
- char buf[1024];
- int bytesRead = mg_read(conn, buf, 1024);
- std::string value(buf, bytesRead);
-
- if (db_insert(sensor, timestamp, value)) {
- reply_header(conn, true, "OK Value received", "\r\n");
- } else {
- reply_header(conn, false, "Internal Error", "\r\n");
- }
-}
-
-static inline void print_json_tuple(struct mg_connection *conn,
- std::ostringstream &outbuf,
- leveldb::Slice &&key,
- leveldb::Slice &&value) {
-
- size_t key_size = key.size();
- if (key_size != 20+3) {
- std::cerr << "invalid key" << std::endl;
- return;
- }
-
- unsigned int offset = 3; // "ts-"
- // skip zeros in timestamp
- while (offset < key_size-1 and *(key.data()+offset) == '0')
- offset++;
-
- outbuf << '[';
- outbuf.write(key.data()+offset, key_size-offset);
- outbuf << ',';
- outbuf.write(value.data(), value.size());
- outbuf << ']';
-
- mg_write(conn, outbuf.str().c_str(), outbuf.tellp());
-}
-
-
-const boost::regex web_handle_api_range_R(
- "/api/range/([a-zA-Z0-9\\.]+)/([0-9]+)/([0-9]+)");
-void web_handle_api_range(const boost::cmatch &match, struct mg_connection *conn) {
- std::string sensor(match[1].str());
- uint64_t start; strToL(&start, match[2].str());
- uint64_t end; strToL(&end, match[3].str());
- std::string key_start(std::move(db_make_key(start)));
- std::string key_end(std::move(db_make_key(end)));
-
- leveldb::DB *db = db_get(sensor);
- if (db == nullptr) {
- reply_header(conn, false, "Internal Error", "\r\n");
- return;
- }
-
- reply_header(conn, true, "OK", "Content-Type: application/json\r\n\r\n");
-
- std::ostringstream out;
- out << "{\"sensor\":\"" << sensor << "\", "
- << "\"error\":null, "
- << "\"data\":[";
- mg_write(conn, out.str().c_str(), out.str().size());
-
- leveldb::Iterator* it = db->NewIterator(leveldb::ReadOptions());
- bool first = true;
- std::ostringstream outbuf;
- for (it->Seek(key_start);
- it->Valid() && cmp->Compare(it->key(), key_end) < 0;
- it->Next()) {
- if (first) first = false;
- else outbuf << ",";
- print_json_tuple(conn, outbuf, it->key(), it->value());
- outbuf.seekp(0);
- }
- mg_printf(conn, "]}\r\n");
- delete it;
-}
-
-const boost::regex web_handle_api_range_size_R(
- "/api/range/([a-zA-Z0-9\\.]+)/([0-9]+)/([0-9]+)/([0-9]+)");
-void web_handle_api_range_size(const boost::cmatch &match, struct mg_connection *conn) {
- std::string sensor(match[1].str());
- uint64_t start; strToL(&start, match[2].str());
- uint64_t end; strToL(&end, match[3].str());
- uint64_t size; strToL(&size, match[4].str());
-
- leveldb::DB *db = db_get(sensor);
- if (db == nullptr) {
- reply_header(conn, false, "Internal Error", "\r\n");
- return;
- }
-
- reply_header(conn, true, "OK", "Content-Type: application/json\r\n\r\n");
-
- uint64_t step = std::max((uint64_t)1, (end-start) / size);
-
- std::ostringstream out;
- out << "{\"sensor\":\"" << sensor << "\", "
- << "\"error\":null, "
- << "\"size\":" << size << ", "
- << "\"step\":" << step << ", "
- << "\"data\":[";
- mg_write(conn, out.str().c_str(), out.str().size());
-
- bool first = true;
- uint64_t actual_size = 0;
- std::ostringstream outbuf;
- leveldb::Iterator* it = db->NewIterator(leveldb::ReadOptions());
- for (uint64_t key = start; key < end; key += step) {
- it->Seek(db_make_key(key));
- if (!it->Valid()) continue;
-
- if (first) first = false;
- else outbuf << ",";
-
- print_json_tuple(conn, outbuf, it->key(), it->value());
- outbuf.seekp(0);
- actual_size++;
- }
- outbuf << "], \"actual_size\":" << actual_size << "}\r\n";
- mg_write(conn, outbuf.str().c_str(), outbuf.tellp());
- delete it;
-}