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Add a determineAddress method

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Because the generated address is deterministic, it can be predicted if you know the name, type, and write-access keys. This method makes it straightforward to do so.
This commit is contained in:
Tyler Yasaka 2018-11-13 08:17:22 -08:00
parent f93243821b
commit 941c078da5
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1 changed files with 23 additions and 18 deletions
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41
src/OrbitDB.js
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@ -226,6 +226,28 @@ class OrbitDB {
if (OrbitDBAddress.isValid(name)) if (OrbitDBAddress.isValid(name))
throw new Error(`Given database name is an address. Please give only the name of the database!`) throw new Error(`Given database name is an address. Please give only the name of the database!`)
// Create the database address
const dbAddress = await this.determineAddress(name, type, options)
// Load the locally saved database information
const cache = await this._loadCache(directory, dbAddress)
// Check if we have the database locally
const haveDB = await this._haveLocalData(cache, dbAddress)
if (haveDB && !options.overwrite)
throw new Error(`Database '${dbAddress}' already exists!`)
// Save the database locally
await this._saveDBManifest(directory, dbAddress)
logger.debug(`Created database '${dbAddress}'`)
// Open the database
return this.open(dbAddress, options)
}
async determineAddress(name, type, options = {}) {
// Create an AccessController // Create an AccessController
const accessController = new AccessController(this._ipfs) const accessController = new AccessController(this._ipfs)
/* Disabled temporarily until we do something with the admin keys */ /* Disabled temporarily until we do something with the admin keys */
@ -250,24 +272,7 @@ class OrbitDB {
const manifestHash = await createDBManifest(this._ipfs, name, type, accessControllerAddress) const manifestHash = await createDBManifest(this._ipfs, name, type, accessControllerAddress)
// Create the database address // Create the database address
const dbAddress = OrbitDBAddress.parse(path.join('/orbitdb', manifestHash, name)) return OrbitDBAddress.parse(path.join('/orbitdb', manifestHash, name))
// Load the locally saved database information
const cache = await this._loadCache(directory, dbAddress)
// Check if we have the database locally
const haveDB = await this._haveLocalData(cache, dbAddress)
if (haveDB && !options.overwrite)
throw new Error(`Database '${dbAddress}' already exists!`)
// Save the database locally
await this._saveDBManifest(directory, dbAddress)
logger.debug(`Created database '${dbAddress}'`)
// Open the database
return this.open(dbAddress, options)
} }
/* /*