| 1 | const mutexify = require('mutexify')
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| 2 |
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| 3 | const CONTENT_LOCK = Symbol('HyperdriveContentLock')
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| 4 |
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| 5 | function contentOptions (self) {
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| 6 | return {
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| 7 | sparse: self.sparse || self.latest,
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| 8 | maxRequests: self.maxRequests,
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| 9 | storageCacheSize: self.contentStorageCacheSize
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| 10 | }
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| 11 | }
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| 12 |
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| 13 | class ContentState {
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| 14 | constructor (feed) {
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| 15 | this.feed = (feed instanceof ContentState) ? feed.feed : feed
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| 16 | if (!this.feed[CONTENT_LOCK]) this.feed[CONTENT_LOCK] = mutexify()
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| 17 | }
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| 18 | lock (cb) {
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| 19 | return this.feed[CONTENT_LOCK](cb)
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| 20 | }
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| 21 | isLocked () {
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| 22 | return this.feed[CONTENT_LOCK].locked
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| 23 | }
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| 24 | }
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| 25 |
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| 26 | module.exports = {
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| 27 | contentOptions,
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| 28 | ContentState
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| 29 | }
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