AT&T M2X Team / M2XStreamClient

ARM mbed M2X API Client: The ARM mbed client library is used to send/receive data to/from AT&T's M2X service from mbed LPC1768 microcontrollers.

Dependents:   m2x-demo-all M2X_MTS_ACCEL_DEMO M2X_MTS_Accel M2X_K64F_ACCEL ... more

M2XStreamClient_template.h@15:2610823f7f2e, 2015-04-27 (annotated)

Committer:
citrusbyte
Date:
Mon Apr 27 15:40:13 2015 +0000
Revision:
15:2610823f7f2e
Parent:
14:205076b587fe
Child:
19:4dfa28d37b8f
Fix content length bug

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jb8414 0:f479e4f4db0e 1 #ifndef M2XStreamClient_template_h
jb8414 0:f479e4f4db0e 2 #define M2XStreamClient_template_h
jb8414 0:f479e4f4db0e 3
jb8414 0:f479e4f4db0e 4 // Implementations of template functions
jb8414 0:f479e4f4db0e 5
jb8414 0:f479e4f4db0e 6 int print_encoded_string(Print* print, const char* str);
jb8414 0:f479e4f4db0e 7
jb8414 0:f479e4f4db0e 8 template <class T>
citrusbyte 13:0d574742208f 9 int M2XStreamClient::updateStreamValue(const char* deviceId, const char* streamName, T value) {
jb8414 0:f479e4f4db0e 10 if (_client->connect(_host, _port)) {
jb8414 0:f479e4f4db0e 11 DBGLN("%s", "Connected to M2X server!");
citrusbyte 13:0d574742208f 12 writePutHeader(deviceId, streamName,
citrusbyte 15:2610823f7f2e 13 // for {"value":" and "}
citrusbyte 15:2610823f7f2e 14 _null_print.print(value) + 12);
citrusbyte 15:2610823f7f2e 15 _client->print("{\"value\":\"");
jb8414 0:f479e4f4db0e 16 _client->print(value);
citrusbyte 15:2610823f7f2e 17 _client->print("\"}");
jb8414 0:f479e4f4db0e 18 } else {
jb8414 0:f479e4f4db0e 19 DBGLN("%s", "ERROR: Cannot connect to M2X server!");
jb8414 0:f479e4f4db0e 20 return E_NOCONNECTION;
jb8414 0:f479e4f4db0e 21 }
jb8414 0:f479e4f4db0e 22
jb8414 0:f479e4f4db0e 23 return readStatusCode(true);
jb8414 0:f479e4f4db0e 24 }
jb8414 0:f479e4f4db0e 25
jb8414 0:f479e4f4db0e 26 template <class T>
jb8414 0:f479e4f4db0e 27 inline int write_multiple_values(Print* print, int streamNum,
jb8414 0:f479e4f4db0e 28 const char* names[], const int counts[],
jb8414 0:f479e4f4db0e 29 const char* ats[], T values[]) {
jb8414 0:f479e4f4db0e 30 int bytes = 0, value_index = 0;
jb8414 0:f479e4f4db0e 31 bytes += print->print("{\"values\":{");
jb8414 0:f479e4f4db0e 32 for (int i = 0; i < streamNum; i++) {
jb8414 0:f479e4f4db0e 33 bytes += print->print("\"");
jb8414 0:f479e4f4db0e 34 bytes += print->print(names[i]);
jb8414 0:f479e4f4db0e 35 bytes += print->print("\":[");
jb8414 0:f479e4f4db0e 36 for (int j = 0; j < counts[i]; j++) {
citrusbyte 13:0d574742208f 37 bytes += print->print("{\"timestamp\": \"");
citrusbyte 10:4ce9eba38dbe 38 bytes += print->print(ats[value_index]);
citrusbyte 10:4ce9eba38dbe 39 bytes += print->print("\", \"value\": \"");
jb8414 0:f479e4f4db0e 40 bytes += print->print(values[value_index]);
jb8414 0:f479e4f4db0e 41 bytes += print->print("\"}");
jb8414 0:f479e4f4db0e 42 if (j < counts[i] - 1) { bytes += print->print(","); }
jb8414 0:f479e4f4db0e 43 value_index++;
jb8414 0:f479e4f4db0e 44 }
jb8414 0:f479e4f4db0e 45 bytes += print->print("]");
jb8414 0:f479e4f4db0e 46 if (i < streamNum - 1) { bytes += print->print(","); }
jb8414 0:f479e4f4db0e 47 }
jb8414 0:f479e4f4db0e 48 bytes += print->print("}}");
jb8414 0:f479e4f4db0e 49 return bytes;
jb8414 0:f479e4f4db0e 50 }
jb8414 0:f479e4f4db0e 51
jb8414 0:f479e4f4db0e 52 template <class T>
citrusbyte 13:0d574742208f 53 int M2XStreamClient::postDeviceUpdates(const char* deviceId, int streamNum,
citrusbyte 13:0d574742208f 54 const char* names[], const int counts[],
citrusbyte 13:0d574742208f 55 const char* ats[], T values[]) {
jb8414 0:f479e4f4db0e 56 if (_client->connect(_host, _port)) {
jb8414 0:f479e4f4db0e 57 DBGLN("%s", "Connected to M2X server!");
jb8414 0:f479e4f4db0e 58 int length = write_multiple_values(&_null_print, streamNum, names,
jb8414 0:f479e4f4db0e 59 counts, ats, values);
NetArc 14:205076b587fe 60 _client->print("POST ");
NetArc 14:205076b587fe 61 if (_path_prefix)
NetArc 14:205076b587fe 62 _client->print(_path_prefix);
NetArc 14:205076b587fe 63 _client->print("/v2/devices/");
citrusbyte 13:0d574742208f 64 print_encoded_string(_client, deviceId);
citrusbyte 13:0d574742208f 65 _client->println("/updates HTTP/1.0");
jb8414 0:f479e4f4db0e 66 writeHttpHeader(length);
jb8414 0:f479e4f4db0e 67 write_multiple_values(_client, streamNum, names, counts, ats, values);
jb8414 0:f479e4f4db0e 68 } else {
jb8414 0:f479e4f4db0e 69 DBGLN("%s", "ERROR: Cannot connect to M2X server!");
jb8414 0:f479e4f4db0e 70 return E_NOCONNECTION;
jb8414 0:f479e4f4db0e 71 }
jb8414 0:f479e4f4db0e 72 return readStatusCode(true);
jb8414 0:f479e4f4db0e 73 }
jb8414 0:f479e4f4db0e 74
jb8414 0:f479e4f4db0e 75 template <class T>
jb8414 0:f479e4f4db0e 76 static int write_location_data(Print* print, const char* name,
jb8414 0:f479e4f4db0e 77 T latitude, T longitude,
jb8414 0:f479e4f4db0e 78 T elevation) {
jb8414 0:f479e4f4db0e 79 int bytes = 0;
jb8414 0:f479e4f4db0e 80 bytes += print->print("{\"name\":\"");
jb8414 0:f479e4f4db0e 81 bytes += print->print(name);
jb8414 0:f479e4f4db0e 82 bytes += print->print("\",\"latitude\":\"");
jb8414 0:f479e4f4db0e 83 bytes += print->print(latitude);
jb8414 0:f479e4f4db0e 84 bytes += print->print("\",\"longitude\":\"");
jb8414 0:f479e4f4db0e 85 bytes += print->print(longitude);
jb8414 0:f479e4f4db0e 86 bytes += print->print("\",\"elevation\":\"");
jb8414 0:f479e4f4db0e 87 bytes += print->print(elevation);
jb8414 0:f479e4f4db0e 88 bytes += print->print("\"}");
jb8414 0:f479e4f4db0e 89 return bytes;
jb8414 0:f479e4f4db0e 90 }
jb8414 0:f479e4f4db0e 91
jb8414 0:f479e4f4db0e 92 static int write_location_data(Print* print, const char* name,
jb8414 0:f479e4f4db0e 93 double latitude, double longitude,
jb8414 0:f479e4f4db0e 94 double elevation) {
jb8414 0:f479e4f4db0e 95 int bytes = 0;
jb8414 0:f479e4f4db0e 96 bytes += print->print("{\"name\":\"");
jb8414 0:f479e4f4db0e 97 bytes += print->print(name);
jb8414 0:f479e4f4db0e 98 bytes += print->print("\",\"latitude\":\"");
jb8414 0:f479e4f4db0e 99 bytes += print->print(latitude, MAX_DOUBLE_DIGITS);
jb8414 0:f479e4f4db0e 100 bytes += print->print("\",\"longitude\":\"");
jb8414 0:f479e4f4db0e 101 bytes += print->print(longitude, MAX_DOUBLE_DIGITS);
jb8414 0:f479e4f4db0e 102 bytes += print->print("\",\"elevation\":\"");
jb8414 0:f479e4f4db0e 103 bytes += print->print(elevation);
jb8414 0:f479e4f4db0e 104 bytes += print->print("\"}");
jb8414 0:f479e4f4db0e 105 return bytes;
jb8414 0:f479e4f4db0e 106 }
jb8414 0:f479e4f4db0e 107
jb8414 0:f479e4f4db0e 108 template <class T>
citrusbyte 13:0d574742208f 109 int M2XStreamClient::updateLocation(const char* deviceId,
jb8414 0:f479e4f4db0e 110 const char* name,
jb8414 0:f479e4f4db0e 111 T latitude,
jb8414 0:f479e4f4db0e 112 T longitude,
jb8414 0:f479e4f4db0e 113 T elevation) {
jb8414 0:f479e4f4db0e 114 if (_client->connect(_host, _port)) {
jb8414 0:f479e4f4db0e 115 DBGLN("%s", "Connected to M2X server!");
jb8414 0:f479e4f4db0e 116
jb8414 0:f479e4f4db0e 117 int length = write_location_data(&_null_print, name, latitude, longitude,
jb8414 0:f479e4f4db0e 118 elevation);
NetArc 14:205076b587fe 119 _client->print("PUT ");
NetArc 14:205076b587fe 120 if (_path_prefix)
NetArc 14:205076b587fe 121 _client->print(_path_prefix);
NetArc 14:205076b587fe 122 _client->print("/v2/devices/");
citrusbyte 13:0d574742208f 123 print_encoded_string(_client, deviceId);
jb8414 0:f479e4f4db0e 124 _client->println("/location HTTP/1.0");
jb8414 0:f479e4f4db0e 125
jb8414 0:f479e4f4db0e 126 writeHttpHeader(length);
jb8414 0:f479e4f4db0e 127 write_location_data(_client, name, latitude, longitude, elevation);
jb8414 0:f479e4f4db0e 128 } else {
jb8414 0:f479e4f4db0e 129 DBGLN("%s", "ERROR: Cannot connect to M2X server!");
jb8414 0:f479e4f4db0e 130 return E_NOCONNECTION;
jb8414 0:f479e4f4db0e 131 }
jb8414 0:f479e4f4db0e 132 return readStatusCode(true);
jb8414 0:f479e4f4db0e 133 }
jb8414 0:f479e4f4db0e 134
jb8414 0:f479e4f4db0e 135 #endif