examples/dse/date_range/date_range.c

/*
  This is free and unencumbered software released into the public domain.

  Anyone is free to copy, modify, publish, use, compile, sell, or
  distribute this software, either in source code form or as a compiled
  binary, for any purpose, commercial or non-commercial, and by any
  means.

  In jurisdictions that recognize copyright laws, the author or authors
  of this software dedicate any and all copyright interest in the
  software to the public domain. We make this dedication for the benefit
  of the public at large and to the detriment of our heirs and
  successors. We intend this dedication to be an overt act of
  relinquishment in perpetuity of all present and future rights to this
  software under copyright law.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  OTHER DEALINGS IN THE SOFTWARE.

  For more information, please refer to <http://unlicense.org/>
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "dse.h"

void print_error(CassFuture* future) {
  const char* message;
  size_t message_length;
  cass_future_error_message(future, &message, &message_length);
  fprintf(stderr, "Error: %.*s\n", (int)message_length, message);
}

void precision_to_string(DseDateRangePrecision precision, char* precision_string) {
  switch (precision) {
    case DSE_DATE_RANGE_PRECISION_YEAR:
      strcpy(precision_string, "YEAR");
      break;
    case DSE_DATE_RANGE_PRECISION_MONTH:
      strcpy(precision_string, "MONTH");
      break;
    case DSE_DATE_RANGE_PRECISION_DAY:
      strcpy(precision_string, "DAY");
      break;
    case DSE_DATE_RANGE_PRECISION_HOUR:
      strcpy(precision_string, "HOUR");
      break;
    case DSE_DATE_RANGE_PRECISION_MINUTE:
      strcpy(precision_string, "MINUTE");
      break;
    case DSE_DATE_RANGE_PRECISION_SECOND:
      strcpy(precision_string, "SECOND");
      break;
    case DSE_DATE_RANGE_PRECISION_MILLISECOND:
      strcpy(precision_string, "MILLISECOND");
      break;
    default:
      strcpy(precision_string, "UNKNOWN");
  }
}

void time_to_string(cass_int64_t time_int, char* time_string) {
  /* time_int is ms-precision. */
  time_t time_secs = (time_t)time_int / 1000;
  strftime(time_string, 20, "%Y-%m-%d %H:%M:%S", gmtime(&time_secs));
  sprintf(time_string + 19, ".%03d", (int)(time_int % 1000));
}

void print_range(const DseDateRange* range) {
  char from_precision_string[20], to_precision_string[20], from_time_string[30], to_time_string[30];

  if (range->is_single_date) {
    if (dse_date_range_bound_is_unbounded(range->lower_bound)) {
      printf("*\n");
    } else {
      precision_to_string(range->lower_bound.precision, from_precision_string);
      time_to_string(range->lower_bound.time_ms, from_time_string);
      printf("%s(%s)\n", from_time_string, from_precision_string);
    }
  } else if (dse_date_range_bound_is_unbounded(range->lower_bound) &&
             dse_date_range_bound_is_unbounded(range->upper_bound)) {
    printf("* TO *\n");
  } else if (dse_date_range_bound_is_unbounded(range->upper_bound)) {
    precision_to_string(range->lower_bound.precision, from_precision_string);
    time_to_string(range->lower_bound.time_ms, from_time_string);
    printf("%s(%s) TO *\n", from_time_string, from_precision_string);
  } else if (dse_date_range_bound_is_unbounded(range->lower_bound)) {
    precision_to_string(range->upper_bound.precision, to_precision_string);
    time_to_string(range->upper_bound.time_ms, to_time_string);
    printf("* TO %s(%s)\n", to_time_string, to_precision_string);
  } else {
    precision_to_string(range->lower_bound.precision, from_precision_string);
    time_to_string(range->lower_bound.time_ms, from_time_string);
    precision_to_string(range->upper_bound.precision, to_precision_string);
    time_to_string(range->upper_bound.time_ms, to_time_string);
    printf("%s(%s) TO %s(%s)\n", from_time_string, from_precision_string, to_time_string,
           to_precision_string);
  }
}

CassCluster* create_cluster(const char* hosts) {
  CassCluster* cluster = cass_cluster_new();
  cass_cluster_set_contact_points(cluster, hosts);
  cass_cluster_set_dse_plaintext_authenticator(cluster, "cassandra", "cassandra");
  return cluster;
}

CassError connect_session(CassSession* session, const CassCluster* cluster) {
  CassError rc = CASS_OK;
  CassFuture* future = cass_session_connect(session, cluster);

  rc = cass_future_error_code(future);
  if (rc != CASS_OK) {
    print_error(future);
  }
  cass_future_free(future);

  return rc;
}

CassError execute_query(CassSession* session, const char* query) {
  CassError rc = CASS_OK;
  CassFuture* future = NULL;
  CassStatement* statement = cass_statement_new(query, 0);

  future = cass_session_execute(session, statement);

  rc = cass_future_error_code(future);
  if (rc != CASS_OK) {
    print_error(future);
  }

  cass_future_free(future);
  cass_statement_free(statement);

  return rc;
}

CassError insert_into_table(CassSession* session, const char* key, const DseDateRange* range) {
  CassError rc = CASS_OK;
  CassStatement* statement = NULL;
  CassFuture* future = NULL;
  const char* query = "INSERT INTO examples.dr (key, value) VALUES (?, ?);";

  statement = cass_statement_new(query, 2);

  cass_statement_bind_string(statement, 0, key);
  cass_statement_bind_dse_date_range(statement, 1, range);

  future = cass_session_execute(session, statement);

  rc = cass_future_error_code(future);
  if (rc != CASS_OK) {
    print_error(future);
  }

  cass_future_free(future);
  cass_statement_free(statement);

  return rc;
}

CassError select_from_table(CassSession* session) {
  CassError rc = CASS_OK;
  CassStatement* statement = NULL;
  CassFuture* future = NULL;
  const char* query = "SELECT * FROM examples.dr";

  statement = cass_statement_new(query, 0);

  future = cass_session_execute(session, statement);

  rc = cass_future_error_code(future);
  if (rc != CASS_OK) {
    print_error(future);
  } else {
    const CassResult* result = cass_future_get_result(future);
    CassIterator* iterator = cass_iterator_from_result(result);

    while (cass_iterator_next(iterator)) {
      const char* row_key;
      size_t row_key_length;
      const CassRow* row = cass_iterator_get_row(iterator);
      int rc = 0;
      DseDateRange range;

      if ((rc = cass_value_get_string(cass_row_get_column(row, 0), &row_key, &row_key_length)) ==
          CASS_OK) {
        printf("%.*s\t", (int)row_key_length, row_key);
      } else {
        printf("got error: %d\n", rc);
      }

      if ((rc = cass_value_get_dse_date_range(cass_row_get_column(row, 1), &range)) == CASS_OK) {
        print_range(&range);
      } else {
        printf("got error: %d\n", rc);
      }
    }

    cass_result_free(result);
    cass_iterator_free(iterator);
  }

  cass_future_free(future);
  cass_statement_free(statement);

  return rc;
}

CassError insert_into_collections(CassSession* session, const char* key, const DseDateRange* range1,
                                  const DseDateRange* range2) {
  CassError rc = CASS_OK;
  CassStatement* statement = NULL;
  CassFuture* future = NULL;
  CassCollection* collection = NULL;
  CassTuple* tuple = NULL;
  const CassSchemaMeta* schema_meta = NULL;
  const CassKeyspaceMeta* keyspace_meta = NULL;
  const CassDataType* udt_type = NULL;
  CassUserType* udt = NULL;

  const char* query =
      "INSERT INTO examples.drcoll (key, coll_value, tuple_value, udt_value) VALUES (?, ?, ?, ?);";
  statement = cass_statement_new(query, 4);

  cass_statement_bind_string(statement, 0, key);

  /* Set up a collection. */
  collection = cass_collection_new(CASS_COLLECTION_TYPE_SET, 2);
  cass_collection_append_dse_date_range(collection, range1);
  cass_collection_append_dse_date_range(collection, range2);

  cass_statement_bind_collection(statement, 1, collection);
  cass_collection_free(collection);

  /* Set up a tuple. */
  tuple = cass_tuple_new(2);
  cass_tuple_set_dse_date_range(tuple, 0, range2);
  cass_tuple_set_dse_date_range(tuple, 1, range1);

  cass_statement_bind_tuple(statement, 2, tuple);
  cass_tuple_free(tuple);

  /* Set up the udt. */
  schema_meta = cass_session_get_schema_meta(session);
  keyspace_meta = cass_schema_meta_keyspace_by_name(schema_meta, "examples");
  udt_type = cass_keyspace_meta_user_type_by_name(keyspace_meta, "dr_user_type");
  udt = cass_user_type_new_from_data_type(udt_type);
  cass_user_type_set_dse_date_range_by_name(udt, "sub", range1);

  cass_statement_bind_user_type(statement, 3, udt);
  cass_user_type_free(udt);
  cass_schema_meta_free(schema_meta);

  /* Insert the row. */
  future = cass_session_execute(session, statement);

  rc = cass_future_error_code(future);
  if (rc != CASS_OK) {
    print_error(future);
  }

  cass_future_free(future);
  cass_statement_free(statement);

  return rc;
}

CassError select_from_collections(CassSession* session, const char* key) {
  CassError rc = CASS_OK;
  CassStatement* statement = NULL;
  CassFuture* future = NULL;
  const char* query =
      "SELECT coll_value, tuple_value, udt_value FROM examples.drcoll WHERE key = ?";

  statement = cass_statement_new(query, 1);
  cass_statement_bind_string(statement, 0, key);

  future = cass_session_execute(session, statement);

  rc = cass_future_error_code(future);
  if (rc != CASS_OK) {
    print_error(future);
  } else {
    const CassResult* result = cass_future_get_result(future);
    CassIterator* iterator = cass_iterator_from_result(result);

    if (cass_iterator_next(iterator)) {
      const CassValue* value = NULL;
      const CassRow* row = cass_iterator_get_row(iterator);
      CassIterator* items_iterator = NULL;

      /* Get coll_value and print it out. */
      value = cass_row_get_column(row, 0);
      items_iterator = cass_iterator_from_collection(value);
      printf("coll_value:\n");
      while (cass_iterator_next(items_iterator)) {
        DseDateRange range;
        cass_value_get_dse_date_range(cass_iterator_get_value(items_iterator), &range);
        printf("  ");
        print_range(&range);
      }
      cass_iterator_free(items_iterator);

      /* Get tuple_value and print it out. */
      value = cass_row_get_column(row, 1);
      items_iterator = cass_iterator_from_tuple(value);
      printf("tuple_value:\n");
      while (cass_iterator_next(items_iterator)) {
        DseDateRange range;
        cass_value_get_dse_date_range(cass_iterator_get_value(items_iterator), &range);
        printf("  ");
        print_range(&range);
      }
      cass_iterator_free(items_iterator);

      /* Get udt_value */
      value = cass_row_get_column(row, 2);
      items_iterator = cass_iterator_fields_from_user_type(value);
      printf("udt_value:\n");
      while (items_iterator != NULL && cass_iterator_next(items_iterator)) {
        const char* field_name;
        size_t field_name_length;
        const CassValue* field_value = NULL;
        DseDateRange range;
        cass_iterator_get_user_type_field_name(items_iterator, &field_name, &field_name_length);
        field_value = cass_iterator_get_user_type_field_value(items_iterator);
        printf("  %.*s ", (int)field_name_length, field_name);
        cass_value_get_dse_date_range(field_value, &range);
        print_range(&range);
      }
      cass_iterator_free(items_iterator);

      printf("\n");
    }

    cass_result_free(result);
    cass_iterator_free(iterator);
  }

  cass_future_free(future);
  cass_statement_free(statement);

  return rc;
}

int main(int argc, char* argv[]) {
  CassCluster* cluster = NULL;
  CassSession* session = cass_session_new();
  char* hosts = "127.0.0.1";
  time_t now = time(NULL);
  DseDateRange range, range2;

  if (argc > 1) {
    hosts = argv[1];
  }
  cluster = create_cluster(hosts);

  if (connect_session(session, cluster) != CASS_OK) {
    cass_cluster_free(cluster);
    cass_session_free(session);
    return -1;
  }

  execute_query(session, "CREATE KEYSPACE IF NOT EXISTS examples WITH replication = { \
                           'class': 'SimpleStrategy', 'replication_factor': '1' };");

  execute_query(session, "CREATE TABLE IF NOT EXISTS examples.dr (key text PRIMARY KEY, \
                                           value 'DateRangeType');");

  execute_query(session, "CREATE TYPE IF NOT EXISTS examples.dr_user_type (sub 'DateRangeType')");

  execute_query(session, "CREATE TABLE IF NOT EXISTS examples.drcoll (key text PRIMARY KEY, \
                                               coll_value set<'DateRangeType'>, \
                                               tuple_value tuple<'DateRangeType', 'DateRangeType'>, \
                                               udt_value dr_user_type)");

  /* Insert a different flavors of date ranges into examples.dr. */
  insert_into_table(session, "open range",
                    dse_date_range_init(&range, dse_date_range_bound_unbounded(),
                                        dse_date_range_bound_unbounded()));
  insert_into_table(session, "open value",
                    dse_date_range_init_single_date(&range, dse_date_range_bound_unbounded()));
  insert_into_table(session, "single value",
                    dse_date_range_init_single_date(
                        &range, dse_date_range_bound_init(DSE_DATE_RANGE_PRECISION_MONTH,
                                                          ((cass_int64_t)now) * 1000)));
  insert_into_table(session, "open high, day",
                    dse_date_range_init(&range,
                                        dse_date_range_bound_init(DSE_DATE_RANGE_PRECISION_DAY,
                                                                  ((cass_int64_t)now) * 1000),
                                        dse_date_range_bound_unbounded()));
  insert_into_table(
      session, "open low, ms",
      dse_date_range_init(&range, dse_date_range_bound_unbounded(),
                          dse_date_range_bound_init(DSE_DATE_RANGE_PRECISION_MILLISECOND,
                                                    ((cass_int64_t)now) * 1000)));

  /* Closed range from 1/2/1970 to now (with some millis tacked on to show that millis are handled
   * properly). */
  insert_into_table(session, "closed range",
                    dse_date_range_init(
                        &range, dse_date_range_bound_init(DSE_DATE_RANGE_PRECISION_YEAR, 86400000),
                        dse_date_range_bound_init(DSE_DATE_RANGE_PRECISION_MILLISECOND,
                                                  ((cass_int64_t)now) * 1000 + 987)));

  /* Now query examples.dr and print out the results. */
  printf("examples.dr:\n");
  select_from_table(session);

  /* Insert a row in the collection table. */

  dse_date_range_init(&range, dse_date_range_bound_init(DSE_DATE_RANGE_PRECISION_DAY, 86400000),
                      dse_date_range_bound_init(DSE_DATE_RANGE_PRECISION_MILLISECOND,
                                                ((cass_int64_t)now) * 1000 + 123));
  dse_date_range_init_single_date(&range2, dse_date_range_bound_unbounded());

  insert_into_collections(session, "key", &range, &range2);

  /* Query the collection table and print out the results. */
  printf("\n\nexamples.drcoll:\n");
  select_from_collections(session, "key");

  cass_cluster_free(cluster);
  cass_session_free(session);

  return 0;
}