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fix: added legacy samples back, until we can update external referenc…
…es (#428)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,163 @@ | ||
| /** | ||
| * Copyright 2018, Google, Inc. | ||
| * 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'; | ||
|
|
||
| // sample-metadata: | ||
| // title: Legacy Samples | ||
|
|
||
| // [START datastore_build_service] | ||
| // By default, the client will authenticate using the service account file | ||
| // specified by the GOOGLE_APPLICATION_CREDENTIALS environment variable and use | ||
| // the project specified by the GCLOUD_PROJECT environment variable. See | ||
| // https://googlecloudplatform.github.io/google-cloud-node/#/docs/datastore/latest/guides/authentication | ||
| const {Datastore} = require('@google-cloud/datastore'); | ||
|
|
||
| // Creates a client | ||
| const datastore = new Datastore(); | ||
| // [END datastore_build_service] | ||
|
|
||
| /* | ||
| Installation and setup instructions. | ||
| 1. Download the TaskList sample application from [here] | ||
| (https://github.com/GoogleCloudPlatform/nodejs-docs-samples/archive/master.zip). | ||
| 2. Unzip the download: | ||
| ```sh | ||
| unzip nodejs-docs-samples-master.zip | ||
| ``` | ||
| 3. Change directories to the TaskList application: | ||
| ```sh | ||
| cd nodejs-docs-samples-master/datastore | ||
| ``` | ||
| 4. Install the dependencies and link the application: | ||
| ```sh | ||
| npm install | ||
| ``` | ||
| 5. With the gcloud SDK, be sure you are authenticated: | ||
| ```sh | ||
| gcloud beta auth application-default login | ||
| ``` | ||
| 6. At a command prompt, run the following, where `<project-id>` is the ID of | ||
| your Google Cloud Platform project. | ||
| ```sh | ||
| export GCLOUD_PROJECT=<project-id> | ||
| ``` | ||
| 7. Run the application! | ||
| ```sh | ||
| node tasks <command> | ||
| ``` | ||
| */ | ||
|
|
||
| // [START datastore_add_entity] | ||
| async function addTask(description) { | ||
| const taskKey = datastore.key('Task'); | ||
| const entity = { | ||
| key: taskKey, | ||
| data: [ | ||
| { | ||
| name: 'created', | ||
| value: new Date().toJSON(), | ||
| }, | ||
| { | ||
| name: 'description', | ||
| value: description, | ||
| excludeFromIndexes: true, | ||
| }, | ||
| { | ||
| name: 'done', | ||
| value: false, | ||
| }, | ||
| ], | ||
| }; | ||
|
|
||
| try { | ||
| await datastore.save(entity); | ||
| console.log(`Task ${taskKey.id} created successfully.`); | ||
| } catch (err) { | ||
| console.error('ERROR:', err); | ||
| } | ||
| } | ||
| // [END datastore_add_entity] | ||
|
|
||
| // [START datastore_update_entity] | ||
| async function markDone(taskId) { | ||
| const transaction = datastore.transaction(); | ||
| const taskKey = datastore.key(['Task', taskId]); | ||
|
|
||
| try { | ||
| await transaction.run(); | ||
| const [task] = await transaction.get(taskKey); | ||
| task.done = true; | ||
| transaction.save({ | ||
| key: taskKey, | ||
| data: task, | ||
| }); | ||
| await transaction.commit(); | ||
| console.log(`Task ${taskId} updated successfully.`); | ||
| } catch (err) { | ||
| transaction.rollback(); | ||
| } | ||
| } | ||
| // [END datastore_update_entity] | ||
|
|
||
| // [START datastore_retrieve_entities] | ||
| async function listTasks() { | ||
| const query = datastore.createQuery('Task').order('created'); | ||
|
|
||
| const [tasks] = await datastore.runQuery(query); | ||
| console.log('Tasks:'); | ||
| tasks.forEach(task => { | ||
| const taskKey = task[datastore.KEY]; | ||
| console.log(taskKey.id, task); | ||
| }); | ||
| } | ||
| // [END datastore_retrieve_entities] | ||
|
|
||
| // [START datastore_delete_entity] | ||
| async function deleteTask(taskId) { | ||
| const taskKey = datastore.key(['Task', taskId]); | ||
|
|
||
| await datastore.delete(taskKey); | ||
| console.log(`Task ${taskId} deleted successfully.`); | ||
| } | ||
| // [END datastore_delete_entity] | ||
|
|
||
| require(`yargs`) // eslint-disable-line | ||
| .command( | ||
| `new <description>`, | ||
| `Adds a task with a description <description>.`, | ||
| {}, | ||
| opts => addTask(opts.description) | ||
| ) | ||
| .command(`done <taskId>`, `Marks the specified task as done.`, {}, opts => | ||
| markDone(opts.taskId) | ||
| ) | ||
| .command(`list`, `Lists all tasks ordered by creation time.`, {}, listTasks) | ||
| .command(`delete <taskId>`, `Deletes a task.`, {}, opts => | ||
| deleteTask(opts.taskId) | ||
| ) | ||
| .example(`node $0 new "Buy milk"`, `Adds a task with description "Buy milk".`) | ||
| .example(`node $0 done 12345`, `Marks task 12345 as Done.`) | ||
| .example(`node $0 list`, `Lists all tasks ordered by creation time`) | ||
| .example(`node $0 delete 12345`, `Deletes task 12345.`) | ||
| .wrap(120) | ||
| .epilogue(`For more information, see https://cloud.google.com/datastore/docs`) | ||
| .help().argv; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -4,3 +4,4 @@ env: | |
| rules: | ||
| node/no-unpublished-require: off | ||
| node/no-missing-require: off | ||
| no-warning-comments: off | ||