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Remove client_strategies table

Browse Source 
We can just have a strategies column in the client_applications
table. This solves all our needs, and thus avoids the need
for an extra table.
This commit is contained in:
ivaosthu 2016-12-09 17:30:12 +01:00
parent 46c8d83dc1
commit ab3694cc94
16 changed files with 108 additions and 214 deletions
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26
docs/api/metrics-api.md
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@ -157,21 +157,27 @@ a link to follow for more datails.
{
"applications": [
{
"appName": "test",
"appName": "another",
"strategies": [
"default",
"other",
"brother"
],
"createdAt": "2016-12-09T14:56:36.730Z",
"links": {
"appDetails": "/api/client/applications/test"
"appDetails": "/api/client/applications/another"
}
},
{
"appName": "demo-app-2",
"appName": "bow",
"strategies": [
"default",
"other",
"brother"
],
"createdAt": "2016-12-09T14:56:36.730Z",
"links": {
"appDetails": "/api/client/applications/demo-app-2"
}
},
{
"appName": "demo-app",
"links": {
"appDetails": "/api/client/applications/demo-app"
"appDetails": "/api/client/applications/bow"
}
}
]

11
docs/developer-guide.md
View File

@ -60,10 +60,13 @@ We use database migrations to track database changes.
### Making a schema change
1. Create `migrations/sql/NNN-your-migration-name.up.sql` with your change in SQL.
2. Create `migrations/sql/NNN-your-migration-name.down.sql` with the rollback of your change in SQL.
3. Run `db-migrate create your-migration-name` and edit the generated file to have this line: `module.exports = require('../scripts/migration-runner').create('NNN-your-migration-name');`
4. Run `db-migrate up`.
Use db-migrate to create new migrations file.
```bash
> ./node_modules/.bin/db-migrate create your-migration-name
```
## Publishing / Releasing new packages

44
lib/db/client-applications-store.js
View File

@ -1,8 +1,8 @@
/* eslint camelcase:off */
'use strict';
const COLUMNS = [
'app_name', 'created_at', 'updated_at', 'description', 'strategies', 'url', 'color', 'icon'];
const COLUMNS = ['app_name', 'created_at', 'updated_at', 'description', 'strategies', 'url', 'color', 'icon'];
const COLUMNS_LIST = ['app_name', 'created_at', 'strategies'];
const TABLE = 'client_applications';
const mapRow = (row) => ({
@ -59,19 +59,43 @@ class ClientApplicationsDb {
});
}
getApplicationMetaData (appName) {
if (appName) {
return this.db
getAll () {
return this.db
.select(COLUMNS_LIST)
.from(TABLE)
.map(mapRow);
}
getApplication (appName) {
return this.db
.select(COLUMNS)
.where('app_name', appName)
.from(TABLE)
.map(mapRow);
}
.map(mapRow)
.then(list => list[0]);
}
/**
* Could also be done in SQL:
* (not sure if it is faster though)
*
* SELECT app_name from (
* SELECT app_name, json_array_elements(strategies)::text as strategyName from client_strategies
* ) as foo
* WHERE foo.strategyName = '"other"';
*/
getAppsForStrategy (strategyName) {
return this.db
.select(COLUMNS)
.select(COLUMNS_LIST)
.from(TABLE)
.orderBy('created_at', 'asc')
.map(mapRow);
.map(mapRow)
.then(apps => apps
.filter(app => app.strategies.includes(strategyName)));
}
getApplications (filter) {
return filter && filter.strategyName ?
this.getAppsForStrategy(filter.strategyName) : this.getAll();
}
};

2
lib/db/client-instance-store.js
View File

@ -76,7 +76,7 @@ class ClientInstanceStore {
getByAppName (appName) {
return this.db
.select(COLUMNS)
.select()
.from(TABLE)
.where('app_name', appName)
.orderBy('last_seen', 'desc')

86
lib/db/client-strategy-store.js
View File

@ -1,86 +0,0 @@
'use strict';
const COLUMNS = ['app_name', 'strategies'];
const TABLE = 'client_strategies';
const mapRow = (row) => ({
appName: row.app_name,
strategies: row.strategies,
});
class ClientStrategyStore {
constructor (db) {
this.db = db;
}
updateRow (appName, strategies) {
return this.db(TABLE)
.where('app_name', appName) // eslint-disable-line
.update({
strategies: JSON.stringify(strategies),
updated_at: 'now()', // eslint-disable-line
});
}
insertNewRow (appName, strategies) {
return this.db(TABLE).insert({
app_name: appName, // eslint-disable-line
strategies: JSON.stringify(strategies),
});
}
insert (appName, strategies) {
return this.db(TABLE)
.count('*')
.where('app_name', appName)
.map(row => ({ count: row.count }))
.then(rows => {
if (rows[0].count > 0) {
return this.updateRow(appName, strategies);
} else {
return this.insertNewRow(appName, strategies);
}
});
}
getAll () {
return this.db
.select(COLUMNS)
.from(TABLE)
.map(mapRow);
}
getByAppName (appName) {
return this.db
.select('strategies')
.where('app_name', appName)
.from(TABLE)
.map((row) => row.strategies)
.then(arr => arr[0]);
}
/**
* Could also be done in SQL:
* (not sure if it is faster though)
*
* SELECT app_name from (
* SELECT app_name, json_array_elements(strategies)::text as strategyName from client_strategies
* ) as foo
* WHERE foo.strategyName = '"other"';
*/
getAppsForStrategy (strategyName) {
return this.getAll()
.then(apps => apps
.filter(app => app.strategies.includes(strategyName))
.map(app => app.appName));
}
getApplications () {
return this.db
.select('app_name')
.from(TABLE)
.map((row) => row.app_name);
}
};
module.exports = ClientStrategyStore;

2
lib/db/index.js
View File

@ -7,7 +7,6 @@ const StrategyStore = require('./strategy-store');
const ClientInstanceStore = require('./client-instance-store');
const ClientMetricsDb = require('./client-metrics-db');
const ClientMetricsStore = require('./client-metrics-store');
const ClientStrategyStore = require('./client-strategy-store');
const ClientApplicationsStore = require('./client-applications-store');
module.exports.createStores = (config) => {
@ -23,6 +22,5 @@ module.exports.createStores = (config) => {
clientApplicationsStore: new ClientApplicationsStore(db),
clientInstanceStore: new ClientInstanceStore(db),
clientMetricsStore: new ClientMetricsStore(clientMetricsDb),
clientStrategyStore: new ClientStrategyStore(db),
};
};

72
lib/routes/metrics.js
View File

@ -9,7 +9,6 @@ const { catchLogAndSendErrorResponse } = require('./route-utils');
module.exports = function (app, config) {
const {
clientMetricsStore,
clientStrategyStore,
clientInstanceStore,
clientApplicationsStore,
} = config.stores;
@ -23,7 +22,7 @@ module.exports = function (app, config) {
app.get('/client/seen-apps', (req, res) => {
const seenApps = metrics.getSeenAppsPerToggle();
clientApplicationsStore.getApplicationMetaData()
clientApplicationsStore.getApplications()
.then(toLookup)
.then(metaData => {
Object.keys(seenApps).forEach(key => {
@ -96,19 +95,6 @@ module.exports = function (app, config) {
});
});
app.get('/client/strategies', (req, res) => {
const appName = req.query.appName;
if (appName) {
clientStrategyStore.getByAppName(appName)
.then(data => res.json(data))
.catch(err => catchLogAndSendErrorResponse(err, res));
} else {
clientStrategyStore.getAll()
.then(data => res.json(data))
.catch(err => catchLogAndSendErrorResponse(err, res));
}
});
app.post('/client/applications/:appName', (req, res) => {
const input = Object.assign({}, req.body, {
appName: req.params.appName,
@ -130,35 +116,47 @@ module.exports = function (app, config) {
}
app.get('/client/applications/', (req, res) => {
const strategyName = req.query.strategyName;
Promise.all([
strategyName ? clientStrategyStore.getAppsForStrategy(strategyName) : clientStrategyStore.getApplications(),
clientApplicationsStore.getApplicationMetaData().then(toLookup),
])
.then(([apps, metaData]) => {
const applications = apps.map(({ appName }) => ({
appName,
data: metaData[appName],
links: {
appDetails: `/api/client/applications/${appName}`,
},
}));
res.json({ applications });
})
.catch(err => catchLogAndSendErrorResponse(err, res));
clientApplicationsStore
.getApplications(req.query)
.then(apps => {
const applications = apps.map(({ appName, createdAt, strategies }) => ({
appName,
strategies,
createdAt,
links: {
appDetails: `/api/client/applications/${appName}`,
},
}));
res.json({ applications });
})
.catch(err => catchLogAndSendErrorResponse(err, res));
});
app.get('/client/applications/:appName', (req, res) => {
const appName = req.params.appName;
const seenToggles = metrics.getSeenTogglesByAppName(appName);
Promise.all([
clientApplicationsStore.getApplication(appName),
clientInstanceStore.getByAppName(appName),
clientStrategyStore.getByAppName(appName),
clientApplicationsStore.getApplicationMetaData(appName),
])
.then(([instances, strategies, [metaData]]) =>
res.json({ appName, instances, strategies, seenToggles, data: metaData })
)
.catch(err => catchLogAndSendErrorResponse(err, res));
.then(([application, instances]) => {
const appDetails = {
appName: application.appName,
createdAt: application.createdAt,
description: application.description,
url: application.url,
color: application.color,
icon: application.icon,
strategies: application.strategies,
instances,
seenToggles,
links: {
self: `/api/client/applications/${application.appName}`,
},
};
res.json(appDetails);
})
.catch(err => catchLogAndSendErrorResponse(err, res));
});
};

3
migrations/20161102212415-create-client-strategies.js
View File

@ -1,3 +0,0 @@
'use strict';
module.exports = require('../scripts/migration-runner').create('009-create-client-strategies');

2
migrations/sql/009-create-client-strategies.down.sql
View File

@ -1,2 +0,0 @@
--create client_strategies
DROP TABLE client_strategies;

6
migrations/sql/009-create-client-strategies.up.sql
View File

@ -1,6 +0,0 @@
--create new client_strategies table
CREATE TABLE client_strategies (
app_name varchar(255) PRIMARY KEY NOT NULL,
updated_at timestamp default now(),
strategies json
);

20
test/e2e/helpers/test-helper.js
View File

@ -60,22 +60,24 @@ function createStrategies (stores) {
].map(strategy => stores.strategyStore._createStrategy(strategy));
}
function createClientStrategy (stores) {
function createApplications (stores) {
return [
{
appName: 'demo-sed',
instanceId: 'test-1',
appName: 'demo-app-1',
strategies: ['default'],
started: Date.now(),
interval: 10,
},
].map(client => stores.clientStrategyStore.insert(client));
{
appName: 'demo-app-2',
strategies: ['default', 'extra'],
description: 'hello',
},
].map(client => stores.clientApplicationsStore.upsert(client));
}
function createClientInstance (stores) {
return [
{
appName: 'demo-seed',
appName: 'demo-app-1',
instanceId: 'test-1',
strategies: ['default'],
started: Date.now(),
@ -159,7 +161,7 @@ function resetDatabase (stores) {
return Promise.all([
stores.db('strategies').del(),
stores.db('features').del(),
stores.db('client_strategies').del(),
stores.db('client_applications').del(),
stores.db('client_instances').del(),
]);
}
@ -169,7 +171,7 @@ function setupDatabase (stores) {
createStrategies(stores)
.concat(createFeatures(stores)
.concat(createClientInstance(stores))
.concat(createClientStrategy(stores))));
.concat(createApplications(stores))));
}
module.exports = {

18
test/e2e/metrics-api.test.js
View File

@ -60,26 +60,14 @@ test.serial('should accept client metrics', async t => {
.then(destroy);
});
test.serial('should get client strategies', async t => {
const { request, destroy } = await setupApp('metrics_serial');
return request
.get('/api/client/strategies')
.expect('Content-Type', /json/)
.expect((res) => {
t.true(res.status === 200);
t.true(res.body.length === 1);
})
.then(destroy);
});
test.serial('should get application details', async t => {
const { request, destroy } = await setupApp('metrics_serial');
return request
.get('/api/client/applications/demo-seed')
.get('/api/client/applications/demo-app-1')
.expect('Content-Type', /json/)
.expect((res) => {
t.true(res.status === 200);
t.true(res.body.appName === 'demo-seed');
t.true(res.body.appName === 'demo-app-1');
t.true(res.body.instances.length === 1);
})
.then(destroy);
@ -92,7 +80,7 @@ test.serial('should get list of applications', async t => {
.expect('Content-Type', /json/)
.expect((res) => {
t.true(res.status === 200);
t.true(res.body.applications.length === 1);
t.true(res.body.applications.length === 2);
})
.then(destroy);
});

2
test/unit/routes/fixtures/fake-client-applications-store.js
View File

@ -2,5 +2,5 @@
module.exports = () => ({
upsert: () => Promise.resolve(),
getApplicationMetaData: () => Promise.resolve([]),
getApplications: () => Promise.resolve([]),
});

14
test/unit/routes/fixtures/fake-client-strategy-store.js
View File

@ -1,14 +0,0 @@
'use strict';
module.exports = () => {
const _instances = [];
return {
insert: () => {
_instances.push();
return Promise.resolve();
},
getAll: () => Promise.resolve(_instances),
getApplications: () => Promise.resolve([]),
};
};

2
test/unit/routes/fixtures/store.js
View File

@ -1,7 +1,6 @@
'use strict';
const ClientMetricsStore = require('./fake-metrics-store');
const clientStrategyStore = require('./fake-client-strategy-store');
const clientInstanceStore = require('./fake-client-instance-store');
const clientApplicationsStore = require('./fake-client-applications-store');
const featureToggleStore = require('./fake-feature-toggle-store');
@ -22,7 +21,6 @@ module.exports = {
db,
clientApplicationsStore: clientApplicationsStore(),
clientMetricsStore: new ClientMetricsStore(),
clientStrategyStore: clientStrategyStore(),
clientInstanceStore: clientInstanceStore(),
featureToggleStore: featureToggleStore(),
eventStore: eventStore(),

12
test/unit/routes/metrics.test.js
View File

@ -151,24 +151,12 @@ test('should return metrics for all toggles', t => {
.get('/api/client/metrics/feature-toggles')
.expect(200)
.expect((res) => {
const metrics = res.body;
t.true(metrics.lastHour !== undefined);
t.true(metrics.lastMinute !== undefined);
});
});
test('should return list of client strategies', t => {
const { request } = getSetup();
return request
.get('/api/client/strategies')
.expect(200)
.expect((res) => {
t.true(res.body.length === 0);
});
});
test('should return list of client applications', t => {
const { request } = getSetup();
return request