Server Load Balancer:Fungsi Kamus

• d: nama kamus.
• k: kunci. Tipe data: semua tipe.
• v: nilai. Tipe data: semua tipe.

• Contoh 1:

  outer_keys=['e66fd4aa-f281-472f-b919-fc7e7474de25', '66fee78d-1887-42ec-9119-a9b50b7fbca2']
  say(concat('keys[1]=', get(outer_keys, 1)))
  say(concat('keys[2]=', get(outer_keys, 2)))
  
  inner_keys=[]
  set(inner_keys, 'dev', '243390eb-00b7-4551-a6b8-021bb34d1674')
  set(inner_keys, 'zeus', '4747d33b-12b0-45e6-ac10-a8e191d6adaa')
  
  def echo_each(k, v, u) {
      s = concat('keys[', k, ']=', v)
      say(s)
  }
  foreach(inner_keys, echo_each, [])                                                                                                                                     

  Output:

  keys[1]=e66fd4aa-f281-472f-b919-fc7e7474de25
  keys[2]=66fee78d-1887-42ec-9119-a9b50b7fbca2
  keys[dev]=243390eb-00b7-4551-a6b8-021bb34d1674
  keys[zeus]=4747d33b-12b0-45e6-ac10-a8e191d6adaa 

• Contoh 2

  d_inner = []
  set(d_inner, 'name', 'inner ascript')
  
  d_outer = []
  set(d_outer, 'dictA', d_inner)
  
  v = get(d_outer, 'dictA')
  if v {
      v = get(v, 'name')
      if v {
          add_rsp_header('X-DSL-NESTED-DICT', v)
      }
  }

  Output:

  X-DSL-NESTED-DICT: inner dsl

• d: nama kamus.
• k: kunci. Tipe data: semua tipe.

• Contoh 1:

  outer_keys=['e66fd4aa-f281-472f-b919-fc7e7474de25', '66fee78d-1887-42ec-9119-a9b50b7fbca2']
  say(concat('keys[1]=', get(outer_keys, 1)))
  say(concat('keys[2]=', get(outer_keys, 2)))
  
  inner_keys=[]
  set(inner_keys, 'dev', '243390eb-00b7-4551-a6b8-021bb34d1674')
  set(inner_keys, 'zeus', '4747d33b-12b0-45e6-ac10-a8e191d6adaa')
  
  def echo_each(k, v, u) {
      s = concat('keys[', k, ']=', v)
      say(s)
  }
  foreach(inner_keys, echo_each, [])                                                                                                                                     

  Output:

  keys[1]=e66fd4aa-f281-472f-b919-fc7e7474de25
  keys[2]=66fee78d-1887-42ec-9119-a9b50b7fbca2
  keys[dev]=243390eb-00b7-4551-a6b8-021bb34d1674
  keys[zeus]=4747d33b-12b0-45e6-ac10-a8e191d6adaa 

• Contoh 2

  d_inner = []
  set(d_inner, 'name', 'inner ascript')
  
  d_outer = []
  set(d_outer, 'dictA', d_inner)
  
  v = get(d_outer, 'dictA')
  if v {
      v = get(v, 'name')
      if v {
          add_rsp_header('X-DSL-NESTED-DICT', v)
      }
  }

  Output:

  X-DSL-NESTED-DICT: inner dsl

• Fungsi ini melintasi elemen-elemen dalam kamus (d) dan memanggil fungsi panggilan balik (f) untuk setiap elemen.
• Tetapkan parameter f dalam sintaks f(key, value, user_data).
• Ketika fungsi f() mengembalikan false, loop foreach() berakhir.

• d: nama kamus.
• f: fungsi panggilan balik.
• user_data: data pengguna yang ingin Anda transmisikan. Tipe data: kamus.

• Contoh 1:

  outer_keys=['e66fd4aa-f281-472f-b919-fc7e7474de25', '66fee78d-1887-42ec-9119-a9b50b7fbca2']
  say(concat('keys[1]=', get(outer_keys, 1)))
  say(concat('keys[2]=', get(outer_keys, 2)))
  
  inner_keys=[]
  set(inner_keys, 'dev', '243390eb-00b7-4551-a6b8-021bb34d1674')
  set(inner_keys, 'zeus', '4747d33b-12b0-45e6-ac10-a8e191d6adaa')
  
  def echo_each(k, v, u) {
      s = concat('keys[', k, ']=', v)
      say(s)
  }
  foreach(inner_keys, echo_each, [])                                                                                                                                     

  Output:

  keys[1]=e66fd4aa-f281-472f-b919-fc7e7474de25
  keys[2]=66fee78d-1887-42ec-9119-a9b50b7fbca2
  keys[dev]=243390eb-00b7-4551-a6b8-021bb34d1674
  keys[zeus]=4747d33b-12b0-45e6-ac10-a8e191d6adaa 

• Contoh 2: Mencetak dua slice M3U8 pertama dan mengakhiri loop foreach.

  def echo_each(k, v, u) {
      say(v)
  
      if match(v, '.*ts') {
          ts_cnt = get(u, 'ts_cnt')
          ts_cnt = add(ts_cnt, 1)
          set(u, 'ts_cnt', ts_cnt)
  
          if ge(ts_cnt, 2) {
              return false
          }
      }
  }
  
  m3u8 = ''
  m3u8 = concat(m3u8, '#EXTM3U8', '\n')
  m3u8 = concat(m3u8, '#EXT-X-MEDIA-SEQUENCE:140651513\n')
  m3u8 = concat(m3u8, '#EXT-X-TARGETDURATION:10\n')
  m3u8 = concat(m3u8, '#EXTINF:8,\n')
  m3u8 = concat(m3u8, 'http://vapp1.fw.live.cntv.cn/cache/289_/seg0/index140651514_140651513.ts\n')
  m3u8 = concat(m3u8, '#EXTINF:9,\n')
  m3u8 = concat(m3u8, 'http://vapp1.fw.live.cntv.cn/cache/289_/seg0/index140651514_140651514.ts\n')
  m3u8 = concat(m3u8, '#EXTINF:10,\n')
  m3u8 = concat(m3u8, 'http://vapp1.fw.live.cntv.cn/cache/289_/seg0/index140651514_140651515.ts\n')
  
  lines = split(m3u8, '\n')
  u = []
  set(u, 'ts_cnt', 0)
  foreach(lines, echo_each, u)

  Output:

  #EXTM3U8
  #EXT-X-MEDIA-SEQUENCE:140651513
  #EXT-X-TARGETDURATION:10
  #EXTINF:8,
  http://vapp1.fw.live.cntv.cn/cache/289_/seg0/index140651514_140651513.ts
  #EXTINF:9,
  http://vapp1.fw.live.cntv.cn/cache/289_/seg0/index140651514_140651514.ts

• d: nama kamus.
• k: kunci. Tipe data: semua tipe.

var_a = []
set(var_a, 'note_a', 'note a info')
if get(var_a, 'note_a') {
    add_rsp_header('X-RESPOND-OUTPUT', 'found var_a key', true)
} else {
    add_rsp_header('X-RESPOND-OUTPUT', 'del var_a key', true)
}
del(var_a, 'note_a')
if get(var_a, 'note_a') {
    add_rsp_header('X-RESPOND-OUTPUT', 'found var_a key', true)
} else {
    add_rsp_header('X-RESPOND-OUTPUT', 'del var_a key', true)
}

X-RESPOND-OUTPUT: found var_a key
X-RESPOND-OUTPUT: del var_a key