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// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
'use strict';
async function main(
instanceId = 'YOUR_INSTANCE_ID',
tableId = 'YOUR_TABLE_ID',
deleteType = 'readRow',
) {
// [START bigtable_deletes_print]
const {Bigtable} = require('@google-cloud/bigtable');
const bigtable = new Bigtable();
// TODO: We need to import Mutation.methods.DELETE from mutation.ts, but I guess we need to compile typescript?
/**
* TODO(developer): Uncomment these variables before running the sample.
*/
// const instanceId = 'YOUR_INSTANCE_ID';
// const tableId = 'YOUR_TABLE_ID';
const instance = bigtable.instance(instanceId);
const table = instance.table(tableId);
switch (deleteType) {
case 'deleteFromColumn': {
// [START bigtable_delete_from_column]
await table.mutate({
key: 'phone#4c410523#20190501',
method: 'delete',
data: {
column: 'cell_plan:data_plan_05gb',
},
});
await printRows();
// [END bigtable_delete_from_column]
break;
}
case 'deleteFromFamily': {
// [START bigtable_delete_from_column_family]
await table.mutate({
key: 'phone#4c410523#20190501',
method: 'delete',
data: {
column: 'cell_plan',
},
});
await printRows();
// [END bigtable_delete_from_column_family]
break;
}
case 'deleteFromRow': {
// [START bigtable_deletes_from_row]
const row = table.row('phone#4c410523#20190501');
await row.delete();
await printRows();
// [END bigtable_deletes_from_row]
break;
}
case 'streamingAndBatching': {
// [START bigtable_streaming_and_batching]
const rows = (await table.getRows({limit: 2}))[0];
const entries = rows.map(row => {
return {
key: row.id,
method: 'delete',
data: {
column: 'cell_plan:data_plan_05gb',
},
};
});
await table.mutate(entries);
await printRows();
// [END bigtable_streaming_and_batching]
break;
}
case 'checkAndMutate': {
// [START bigtable_check_and_mutate]
const row = table.row('phone#4c410523#20190502');
await row.filter(
{
column: 'data_plan_05gb',
},
{
onMatch: {
key: 'phone#4c410523#20190502',
method: 'delete',
},
},
);
await printRows();
// [END bigtable_check_and_mutate]
break;
}
case 'dropRowRange': {
// [START bigtable_drop_row_range]
await table.deleteRows('phone#5c10102');
await printRows();
// [END bigtable_drop_row_range]
break;
}
case 'deleteColumnFamily': {
// [START bigtable_delete_column_family]
const {BigtableTableAdminClient} = require('@google-cloud/bigtable').v2;
const adminClient = new BigtableTableAdminClient();
const projectId = await adminClient.getProjectId();
const request = {
name: `projects/${projectId}/instances/${instanceId}/tables/${tableId}`,
modifications: [
{
id: 'stats_summary',
drop: true,
},
],
};
await adminClient.modifyColumnFamilies(request);
await printRows();
// [END bigtable_delete_column_family]
break;
}
case 'deleteTable': {
// [START bigtable_delete_table]
const {BigtableTableAdminClient} = require('@google-cloud/bigtable').v2;
const adminClient = new BigtableTableAdminClient();
const projectId = await adminClient.getProjectId();
const request = {
name: `projects/${projectId}/instances/${instanceId}/tables/${tableId}`,
};
await adminClient.deleteTable(request);
console.log(
await adminClient
.getTable({
name: `projects/${projectId}/instances/${instanceId}/tables/${tableId}`,
})
.catch(e => (e.code === 5 ? false : e)),
);
// [END bigtable_delete_table]
break;
}
}
async function printRows() {
const rows = (await table.getRows({}))[0];
for (const row of rows) {
const rowData = row.data;
for (const columnFamily of Object.keys(rowData)) {
const columnFamilyData = rowData[columnFamily];
console.log(`Column Family ${columnFamily}`);
for (const columnQualifier of Object.keys(columnFamilyData)) {
const col = columnFamilyData[columnQualifier];
for (const cell of col) {
const labels = cell.labels.length
? ` [${cell.labels.join(',')}]`
: '';
console.log(
`\t${columnQualifier}: ${cell.value} @${cell.timestamp}${labels}`,
);
}
}
}
}
console.log();
}
}
// [END bigtable_deletes_print]
main(...process.argv.slice(2));